/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:32:24,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:32:24,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:32:24,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:32:24,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:32:24,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:32:24,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:32:24,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:32:24,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:32:24,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:32:24,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:32:24,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:32:24,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:32:24,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:32:24,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:32:24,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:32:24,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:32:24,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:32:24,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:32:24,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:32:24,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:32:24,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:32:24,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:32:24,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:32:24,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:32:24,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:32:24,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:32:24,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:32:24,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:32:24,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:32:24,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:32:24,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:32:24,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:32:24,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:32:24,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:32:24,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:32:24,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:32:24,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:32:24,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:32:24,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:32:24,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:32:24,662 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 [2020-10-14 02:32:24,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:32:24,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:32:24,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:32:24,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:32:24,718 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:32:24,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:32:24,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:32:24,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:32:24,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:32:24,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:32:24,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:32:24,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:32:24,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:32:24,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:32:24,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:32:24,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:32:24,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:32:24,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:32:24,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:32:24,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:32:24,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:32:24,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:32:24,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:32:24,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:32:24,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:32:24,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:32:24,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:32:24,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:32:24,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:32:24,727 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:32:25,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:32:25,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:32:25,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:32:25,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:32:25,112 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:32:25,113 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-14 02:32:25,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43e7bff72/0fadedc408994c70bda7e12d0171b55a/FLAG5f1daf7fd [2020-10-14 02:32:25,824 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:32:25,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label05.c [2020-10-14 02:32:25,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43e7bff72/0fadedc408994c70bda7e12d0171b55a/FLAG5f1daf7fd [2020-10-14 02:32:26,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43e7bff72/0fadedc408994c70bda7e12d0171b55a [2020-10-14 02:32:26,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:32:26,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:32:26,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:32:26,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:32:26,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:32:26,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:26,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab080f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26, skipping insertion in model container [2020-10-14 02:32:26,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:26,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:32:26,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:32:26,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:32:26,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:32:26,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:32:26,994 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:32:26,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26 WrapperNode [2020-10-14 02:32:26,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:32:26,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:32:26,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:32:26,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:32:27,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:27,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:27,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:27,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:27,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:27,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:27,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (1/1) ... [2020-10-14 02:32:27,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:32:27,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:32:27,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:32:27,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:32:27,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (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 [2020-10-14 02:32:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:32:27,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:32:27,223 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:32:27,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:32:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:32:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:32:27,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:32:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:32:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:32:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:32:27,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:32:29,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:32:29,161 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:32:29,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:32:29 BoogieIcfgContainer [2020-10-14 02:32:29,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:32:29,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:32:29,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:32:29,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:32:29,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:32:26" (1/3) ... [2020-10-14 02:32:29,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6270cacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:32:29, skipping insertion in model container [2020-10-14 02:32:29,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:32:26" (2/3) ... [2020-10-14 02:32:29,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6270cacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:32:29, skipping insertion in model container [2020-10-14 02:32:29,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:32:29" (3/3) ... [2020-10-14 02:32:29,178 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label05.c [2020-10-14 02:32:29,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:32:29,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:32:29,212 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:32:29,240 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:32:29,240 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:32:29,240 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:32:29,240 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:32:29,241 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:32:29,241 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:32:29,241 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:32:29,241 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:32:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 02:32:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 02:32:29,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:32:29,279 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] [2020-10-14 02:32:29,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:32:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:32:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash 642669955, now seen corresponding path program 1 times [2020-10-14 02:32:29,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:32:29,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101598063] [2020-10-14 02:32:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:32:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:30,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:30,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 02:32:30,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:30,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-14 02:32:30,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:30,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:32:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:32:30,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:32:30,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:32:30,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:32:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:30,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:30,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:30,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:32:30,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 02:32:30,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:30,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:32:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:30,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:32:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:32:30,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101598063] [2020-10-14 02:32:30,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:32:30,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:32:30,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966647049] [2020-10-14 02:32:30,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:32:30,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:32:30,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:32:30,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:32:30,217 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 02:32:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:32:32,874 INFO L93 Difference]: Finished difference Result 806 states and 1404 transitions. [2020-10-14 02:32:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:32:32,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 02:32:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:32:32,905 INFO L225 Difference]: With dead ends: 806 [2020-10-14 02:32:32,905 INFO L226 Difference]: Without dead ends: 434 [2020-10-14 02:32:32,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:32:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-14 02:32:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 428. [2020-10-14 02:32:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-14 02:32:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 617 transitions. [2020-10-14 02:32:33,000 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 617 transitions. Word has length 70 [2020-10-14 02:32:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:32:33,000 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 617 transitions. [2020-10-14 02:32:33,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:32:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 617 transitions. [2020-10-14 02:32:33,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 02:32:33,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:32:33,009 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:32:33,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:32:33,009 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:32:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:32:33,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1962693410, now seen corresponding path program 1 times [2020-10-14 02:32:33,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:32:33,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895398612] [2020-10-14 02:32:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:32:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:33,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:33,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:34,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:34,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 02:32:34,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:32:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1601 [2020-10-14 02:32:34,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:34,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:32:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:32:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:32:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:34,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:32:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:34,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:34,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:32:34,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:32:34,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:34,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:32:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:34,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:32:34,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:32:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:34,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:34,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:34,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:32:34,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:34,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 02:32:34,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:34,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:34,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:32:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:32:34,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:32:35,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895398612] [2020-10-14 02:32:35,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:32:35,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:32:35,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806273416] [2020-10-14 02:32:35,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:32:35,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:32:35,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:32:35,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:32:35,004 INFO L87 Difference]: Start difference. First operand 428 states and 617 transitions. Second operand 5 states. [2020-10-14 02:32:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:32:37,335 INFO L93 Difference]: Finished difference Result 1249 states and 1824 transitions. [2020-10-14 02:32:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:32:37,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-14 02:32:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:32:37,347 INFO L225 Difference]: With dead ends: 1249 [2020-10-14 02:32:37,347 INFO L226 Difference]: Without dead ends: 827 [2020-10-14 02:32:37,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:32:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2020-10-14 02:32:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 812. [2020-10-14 02:32:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-10-14 02:32:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1082 transitions. [2020-10-14 02:32:37,429 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1082 transitions. Word has length 142 [2020-10-14 02:32:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:32:37,430 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 1082 transitions. [2020-10-14 02:32:37,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:32:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1082 transitions. [2020-10-14 02:32:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 02:32:37,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:32:37,442 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 02:32:37,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:32:37,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:32:37,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:32:37,446 INFO L82 PathProgramCache]: Analyzing trace with hash -208173314, now seen corresponding path program 1 times [2020-10-14 02:32:37,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:32:37,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184232216] [2020-10-14 02:32:37,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:32:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:37,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 02:32:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:32:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1457 [2020-10-14 02:32:38,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:38,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:32:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:32:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:32:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:32:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:39,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:39,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:32:39,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:39,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:32:39,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:39,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:32:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:32:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:32:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:39,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:39,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 02:32:39,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 02:32:39,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:39,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:32:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:32:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:32:39,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184232216] [2020-10-14 02:32:39,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:32:39,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:32:39,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533468618] [2020-10-14 02:32:39,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:32:39,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:32:39,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:32:39,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:32:39,281 INFO L87 Difference]: Start difference. First operand 812 states and 1082 transitions. Second operand 6 states. [2020-10-14 02:32:42,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:32:42,712 INFO L93 Difference]: Finished difference Result 2030 states and 2788 transitions. [2020-10-14 02:32:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:32:42,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-10-14 02:32:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:32:42,722 INFO L225 Difference]: With dead ends: 2030 [2020-10-14 02:32:42,723 INFO L226 Difference]: Without dead ends: 1224 [2020-10-14 02:32:42,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:32:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-10-14 02:32:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1197. [2020-10-14 02:32:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-10-14 02:32:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1633 transitions. [2020-10-14 02:32:42,792 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1633 transitions. Word has length 144 [2020-10-14 02:32:42,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:32:42,796 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1633 transitions. [2020-10-14 02:32:42,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:32:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1633 transitions. [2020-10-14 02:32:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 02:32:42,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:32:42,806 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 02:32:42,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:32:42,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:32:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:32:42,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2031106738, now seen corresponding path program 1 times [2020-10-14 02:32:42,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:32:42,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228420813] [2020-10-14 02:32:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:32:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:43,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:43,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 02:32:43,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:32:43,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-14 02:32:43,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:43,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:43,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:32:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 02:32:43,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:32:43,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 02:32:44,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:32:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:44,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:32:44,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:32:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:44,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:32:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:32:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:32:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:44,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:44,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 02:32:44,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 02:32:44,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:44,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:32:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 02:32:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:32:44,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228420813] [2020-10-14 02:32:44,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:32:44,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:32:44,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986467003] [2020-10-14 02:32:44,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:32:44,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:32:44,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:32:44,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:32:44,365 INFO L87 Difference]: Start difference. First operand 1197 states and 1633 transitions. Second operand 5 states. [2020-10-14 02:32:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:32:46,866 INFO L93 Difference]: Finished difference Result 2977 states and 4195 transitions. [2020-10-14 02:32:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:32:46,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-14 02:32:46,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:32:46,878 INFO L225 Difference]: With dead ends: 2977 [2020-10-14 02:32:46,878 INFO L226 Difference]: Without dead ends: 1786 [2020-10-14 02:32:46,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:32:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-10-14 02:32:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1770. [2020-10-14 02:32:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-10-14 02:32:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2314 transitions. [2020-10-14 02:32:46,949 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2314 transitions. Word has length 168 [2020-10-14 02:32:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:32:46,950 INFO L479 AbstractCegarLoop]: Abstraction has 1770 states and 2314 transitions. [2020-10-14 02:32:46,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:32:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2314 transitions. [2020-10-14 02:32:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 02:32:46,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:32:46,954 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 02:32:46,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:32:46,955 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:32:46,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:32:46,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1624421017, now seen corresponding path program 1 times [2020-10-14 02:32:46,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:32:46,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302151144] [2020-10-14 02:32:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:32:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:47,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:47,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:48,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:48,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 02:32:48,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:32:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-14 02:32:48,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:48,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:32:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:32:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:32:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:32:48,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:32:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:48,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:48,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:32:48,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:48,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:32:48,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:48,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:32:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:48,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:32:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:32:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:48,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:48,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:32:48,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:48,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:32:48,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:48,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:32:48,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:32:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:32:48,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302151144] [2020-10-14 02:32:48,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:32:48,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:32:48,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328174662] [2020-10-14 02:32:48,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:32:48,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:32:48,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:32:48,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:32:48,314 INFO L87 Difference]: Start difference. First operand 1770 states and 2314 transitions. Second operand 5 states. [2020-10-14 02:32:50,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:32:50,618 INFO L93 Difference]: Finished difference Result 4126 states and 5593 transitions. [2020-10-14 02:32:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:32:50,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-14 02:32:50,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:32:50,633 INFO L225 Difference]: With dead ends: 4126 [2020-10-14 02:32:50,633 INFO L226 Difference]: Without dead ends: 2362 [2020-10-14 02:32:50,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:32:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-14 02:32:50,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2351. [2020-10-14 02:32:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2351 states. [2020-10-14 02:32:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 3087 transitions. [2020-10-14 02:32:50,710 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 3087 transitions. Word has length 173 [2020-10-14 02:32:50,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:32:50,711 INFO L479 AbstractCegarLoop]: Abstraction has 2351 states and 3087 transitions. [2020-10-14 02:32:50,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:32:50,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 3087 transitions. [2020-10-14 02:32:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 02:32:50,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:32:50,716 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 02:32:50,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:32:50,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:32:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:32:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1920294560, now seen corresponding path program 1 times [2020-10-14 02:32:50,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:32:50,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664346422] [2020-10-14 02:32:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:32:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:51,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:51,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 02:32:51,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:32:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-10-14 02:32:51,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:51,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:32:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 02:32:51,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:32:51,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:51,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:32:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:51,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:51,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:32:51,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:51,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:32:51,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:51,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:32:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:51,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:32:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:51,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:32:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:51,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:52,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:52,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 02:32:52,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:52,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 02:32:52,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:52,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:52,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:32:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 02:32:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:32:52,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664346422] [2020-10-14 02:32:52,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:32:52,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:32:52,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254102648] [2020-10-14 02:32:52,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:32:52,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:32:52,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:32:52,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:32:52,125 INFO L87 Difference]: Start difference. First operand 2351 states and 3087 transitions. Second operand 5 states. [2020-10-14 02:32:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:32:54,861 INFO L93 Difference]: Finished difference Result 6620 states and 8862 transitions. [2020-10-14 02:32:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:32:54,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 02:32:54,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:32:54,888 INFO L225 Difference]: With dead ends: 6620 [2020-10-14 02:32:54,889 INFO L226 Difference]: Without dead ends: 4275 [2020-10-14 02:32:54,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:32:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2020-10-14 02:32:55,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4261. [2020-10-14 02:32:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4261 states. [2020-10-14 02:32:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4261 states to 4261 states and 5350 transitions. [2020-10-14 02:32:55,030 INFO L78 Accepts]: Start accepts. Automaton has 4261 states and 5350 transitions. Word has length 184 [2020-10-14 02:32:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:32:55,031 INFO L479 AbstractCegarLoop]: Abstraction has 4261 states and 5350 transitions. [2020-10-14 02:32:55,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:32:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 4261 states and 5350 transitions. [2020-10-14 02:32:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 02:32:55,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:32:55,037 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 02:32:55,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:32:55,038 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:32:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:32:55,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1253628053, now seen corresponding path program 1 times [2020-10-14 02:32:55,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:32:55,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655712849] [2020-10-14 02:32:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:32:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:55,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:55,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:56,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 02:32:56,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:32:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-14 02:32:56,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:56,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:32:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-14 02:32:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:32:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:56,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:32:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:56,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:56,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:56,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:32:56,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:56,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:32:56,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:56,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:32:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:56,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:32:56,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:56,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:32:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:56,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:32:56,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:32:56,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:32:56,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:32:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 02:32:56,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:32:56,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:32:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:32:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:32:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:32:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:32:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:32:56,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655712849] [2020-10-14 02:32:56,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:32:56,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:32:56,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485475991] [2020-10-14 02:32:56,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:32:56,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:32:56,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:32:56,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:32:56,506 INFO L87 Difference]: Start difference. First operand 4261 states and 5350 transitions. Second operand 5 states. [2020-10-14 02:32:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:32:59,377 INFO L93 Difference]: Finished difference Result 10256 states and 13198 transitions. [2020-10-14 02:32:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:32:59,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 02:32:59,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:32:59,407 INFO L225 Difference]: With dead ends: 10256 [2020-10-14 02:32:59,407 INFO L226 Difference]: Without dead ends: 6001 [2020-10-14 02:32:59,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:32:59,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2020-10-14 02:32:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5983. [2020-10-14 02:32:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5983 states. [2020-10-14 02:32:59,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5983 states to 5983 states and 7446 transitions. [2020-10-14 02:32:59,638 INFO L78 Accepts]: Start accepts. Automaton has 5983 states and 7446 transitions. Word has length 189 [2020-10-14 02:32:59,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:32:59,638 INFO L479 AbstractCegarLoop]: Abstraction has 5983 states and 7446 transitions. [2020-10-14 02:32:59,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:32:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5983 states and 7446 transitions. [2020-10-14 02:32:59,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 02:32:59,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:32:59,653 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 02:32:59,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:32:59,654 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:32:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:32:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash -89456784, now seen corresponding path program 1 times [2020-10-14 02:32:59,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:32:59,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793668978] [2020-10-14 02:32:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:32:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:32:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:01,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:01,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 02:33:01,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:33:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-14 02:33:01,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:01,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 02:33:01,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:33:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:01,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:01,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:01,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:01,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:01,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:33:01,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:01,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:01,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:01,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:01,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:01,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:01,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:01,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 02:33:01,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:01,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 02:33:01,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:01,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 02:33:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:33:01,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793668978] [2020-10-14 02:33:01,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:01,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:33:01,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702894452] [2020-10-14 02:33:01,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:33:01,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:01,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:33:01,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:33:01,530 INFO L87 Difference]: Start difference. First operand 5983 states and 7446 transitions. Second operand 5 states. [2020-10-14 02:33:03,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:03,835 INFO L93 Difference]: Finished difference Result 14061 states and 17916 transitions. [2020-10-14 02:33:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:33:03,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-14 02:33:03,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:03,871 INFO L225 Difference]: With dead ends: 14061 [2020-10-14 02:33:03,872 INFO L226 Difference]: Without dead ends: 8084 [2020-10-14 02:33:03,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:33:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8084 states. [2020-10-14 02:33:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8084 to 7886. [2020-10-14 02:33:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7886 states. [2020-10-14 02:33:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7886 states to 7886 states and 9755 transitions. [2020-10-14 02:33:04,118 INFO L78 Accepts]: Start accepts. Automaton has 7886 states and 9755 transitions. Word has length 233 [2020-10-14 02:33:04,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:04,119 INFO L479 AbstractCegarLoop]: Abstraction has 7886 states and 9755 transitions. [2020-10-14 02:33:04,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:33:04,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7886 states and 9755 transitions. [2020-10-14 02:33:04,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 02:33:04,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:04,132 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:33:04,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:33:04,133 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:04,133 INFO L82 PathProgramCache]: Analyzing trace with hash -972614923, now seen corresponding path program 1 times [2020-10-14 02:33:04,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:04,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624747111] [2020-10-14 02:33:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:04,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:06,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:06,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 02:33:06,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:33:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2454 [2020-10-14 02:33:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:06,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:33:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:33:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:33:06,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:06,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:06,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:06,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:06,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:06,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:06,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:33:06,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 02:33:06,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:06,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:33:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:06,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:33:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:06,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:07,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:07,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:33:07,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:07,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 02:33:07,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:07,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:07,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:33:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:33:07,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624747111] [2020-10-14 02:33:07,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:07,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:33:07,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335108239] [2020-10-14 02:33:07,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:33:07,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:33:07,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:33:07,154 INFO L87 Difference]: Start difference. First operand 7886 states and 9755 transitions. Second operand 7 states. [2020-10-14 02:33:10,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:10,555 INFO L93 Difference]: Finished difference Result 17999 states and 22402 transitions. [2020-10-14 02:33:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:33:10,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-14 02:33:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:10,602 INFO L225 Difference]: With dead ends: 17999 [2020-10-14 02:33:10,603 INFO L226 Difference]: Without dead ends: 10119 [2020-10-14 02:33:10,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:33:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10119 states. [2020-10-14 02:33:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10119 to 8571. [2020-10-14 02:33:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8571 states. [2020-10-14 02:33:10,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8571 states to 8571 states and 10669 transitions. [2020-10-14 02:33:10,843 INFO L78 Accepts]: Start accepts. Automaton has 8571 states and 10669 transitions. Word has length 236 [2020-10-14 02:33:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:10,844 INFO L479 AbstractCegarLoop]: Abstraction has 8571 states and 10669 transitions. [2020-10-14 02:33:10,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:33:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 8571 states and 10669 transitions. [2020-10-14 02:33:10,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 02:33:10,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:10,859 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:33:10,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:33:10,859 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:10,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:10,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1609265608, now seen corresponding path program 1 times [2020-10-14 02:33:10,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:10,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497648409] [2020-10-14 02:33:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:14,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:14,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 02:33:14,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:33:14,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4025 [2020-10-14 02:33:14,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:14,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 02:33:14,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:33:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:14,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:15,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:15,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:15,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:33:15,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:15,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:15,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:15,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:15,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:15,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:15,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:33:15,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 02:33:15,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:15,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:33:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:15,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 02:33:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:15,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:15,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:15,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:33:15,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:15,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 02:33:15,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:15,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:33:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:33:15,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497648409] [2020-10-14 02:33:15,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:15,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:33:15,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071768839] [2020-10-14 02:33:15,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:33:15,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:15,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:33:15,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:33:15,470 INFO L87 Difference]: Start difference. First operand 8571 states and 10669 transitions. Second operand 7 states. [2020-10-14 02:33:19,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:19,033 INFO L93 Difference]: Finished difference Result 18554 states and 23154 transitions. [2020-10-14 02:33:19,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:33:19,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-14 02:33:19,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:19,062 INFO L225 Difference]: With dead ends: 18554 [2020-10-14 02:33:19,063 INFO L226 Difference]: Without dead ends: 9797 [2020-10-14 02:33:19,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:33:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9797 states. [2020-10-14 02:33:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9797 to 9017. [2020-10-14 02:33:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9017 states. [2020-10-14 02:33:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 11158 transitions. [2020-10-14 02:33:19,339 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 11158 transitions. Word has length 237 [2020-10-14 02:33:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:19,340 INFO L479 AbstractCegarLoop]: Abstraction has 9017 states and 11158 transitions. [2020-10-14 02:33:19,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:33:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 11158 transitions. [2020-10-14 02:33:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-14 02:33:19,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:19,370 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:33:19,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:33:19,370 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:19,372 INFO L82 PathProgramCache]: Analyzing trace with hash -731442558, now seen corresponding path program 1 times [2020-10-14 02:33:19,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:19,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213211673] [2020-10-14 02:33:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:19,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:21,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:21,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-14 02:33:21,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:33:21,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-10-14 02:33:21,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:21,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-14 02:33:21,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:33:21,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:21,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:21,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:21,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:21,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:21,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:33:21,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:21,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:21,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:21,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:21,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:33:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 02:33:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:21,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 02:33:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:21,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 02:33:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:21,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:21,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:33:21,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:21,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 02:33:21,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:21,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:33:21,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:33:21,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213211673] [2020-10-14 02:33:21,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:21,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:33:21,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748023495] [2020-10-14 02:33:21,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:33:21,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:33:21,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:33:21,680 INFO L87 Difference]: Start difference. First operand 9017 states and 11158 transitions. Second operand 8 states. [2020-10-14 02:33:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:26,546 INFO L93 Difference]: Finished difference Result 20371 states and 25916 transitions. [2020-10-14 02:33:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 02:33:26,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 274 [2020-10-14 02:33:26,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:26,584 INFO L225 Difference]: With dead ends: 20371 [2020-10-14 02:33:26,585 INFO L226 Difference]: Without dead ends: 11558 [2020-10-14 02:33:26,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-14 02:33:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11558 states. [2020-10-14 02:33:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11558 to 11524. [2020-10-14 02:33:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11524 states. [2020-10-14 02:33:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11524 states to 11524 states and 14315 transitions. [2020-10-14 02:33:26,836 INFO L78 Accepts]: Start accepts. Automaton has 11524 states and 14315 transitions. Word has length 274 [2020-10-14 02:33:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:26,836 INFO L479 AbstractCegarLoop]: Abstraction has 11524 states and 14315 transitions. [2020-10-14 02:33:26,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:33:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 11524 states and 14315 transitions. [2020-10-14 02:33:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-14 02:33:26,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:26,848 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, 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, 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] [2020-10-14 02:33:26,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:33:26,848 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:26,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1766074161, now seen corresponding path program 1 times [2020-10-14 02:33:26,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:26,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525162591] [2020-10-14 02:33:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:27,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:27,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-14 02:33:27,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 02:33:27,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:27,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 02:33:27,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:33:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:27,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:27,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:27,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:27,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:27,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:33:27,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:27,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:27,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:27,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:27,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:27,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:33:27,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 02:33:27,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:27,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:33:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:33:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:27,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:27,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:33:27,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:27,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 02:33:27,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:27,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:27,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:33:27,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:33:27,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525162591] [2020-10-14 02:33:27,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:27,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:33:27,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223695973] [2020-10-14 02:33:27,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:33:27,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:27,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:33:27,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:33:27,895 INFO L87 Difference]: Start difference. First operand 11524 states and 14315 transitions. Second operand 7 states. [2020-10-14 02:33:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:31,644 INFO L93 Difference]: Finished difference Result 23432 states and 29165 transitions. [2020-10-14 02:33:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:33:31,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-14 02:33:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:31,695 INFO L225 Difference]: With dead ends: 23432 [2020-10-14 02:33:31,695 INFO L226 Difference]: Without dead ends: 12298 [2020-10-14 02:33:31,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:33:31,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12298 states. [2020-10-14 02:33:31,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12298 to 12092. [2020-10-14 02:33:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12092 states. [2020-10-14 02:33:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 14941 transitions. [2020-10-14 02:33:31,979 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 14941 transitions. Word has length 280 [2020-10-14 02:33:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:31,980 INFO L479 AbstractCegarLoop]: Abstraction has 12092 states and 14941 transitions. [2020-10-14 02:33:31,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:33:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 14941 transitions. [2020-10-14 02:33:32,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 02:33:32,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:32,002 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, 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, 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] [2020-10-14 02:33:32,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 02:33:32,002 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:32,003 INFO L82 PathProgramCache]: Analyzing trace with hash -807311937, now seen corresponding path program 1 times [2020-10-14 02:33:32,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:32,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614814405] [2020-10-14 02:33:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:32,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:32,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:32,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 02:33:32,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 02:33:32,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:32,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:33:32,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:33:32,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:32,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:32,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:33:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:32,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:32,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:32,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:32,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:32,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:32,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:33:32,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:32,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 02:33:32,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:32,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:33:32,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:32,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:33:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:32,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:32,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:33:32,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 02:33:32,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:32,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:32,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:32,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:33:32,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:33:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:33:33,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614814405] [2020-10-14 02:33:33,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:33,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:33:33,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596162573] [2020-10-14 02:33:33,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:33:33,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:33:33,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:33:33,199 INFO L87 Difference]: Start difference. First operand 12092 states and 14941 transitions. Second operand 7 states. [2020-10-14 02:33:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:36,399 INFO L93 Difference]: Finished difference Result 24421 states and 30392 transitions. [2020-10-14 02:33:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:33:36,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-14 02:33:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:36,424 INFO L225 Difference]: With dead ends: 24421 [2020-10-14 02:33:36,424 INFO L226 Difference]: Without dead ends: 12719 [2020-10-14 02:33:36,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:33:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12719 states. [2020-10-14 02:33:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12719 to 12691. [2020-10-14 02:33:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12691 states. [2020-10-14 02:33:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12691 states to 12691 states and 15667 transitions. [2020-10-14 02:33:36,671 INFO L78 Accepts]: Start accepts. Automaton has 12691 states and 15667 transitions. Word has length 295 [2020-10-14 02:33:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:36,671 INFO L479 AbstractCegarLoop]: Abstraction has 12691 states and 15667 transitions. [2020-10-14 02:33:36,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:33:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12691 states and 15667 transitions. [2020-10-14 02:33:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 02:33:36,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:36,688 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, 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, 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] [2020-10-14 02:33:36,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 02:33:36,688 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:36,689 INFO L82 PathProgramCache]: Analyzing trace with hash -308755135, now seen corresponding path program 1 times [2020-10-14 02:33:36,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:36,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820622722] [2020-10-14 02:33:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:36,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:38,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:38,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 02:33:38,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:33:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1903 [2020-10-14 02:33:38,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:38,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 02:33:38,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:33:38,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:38,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:38,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:38,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:33:38,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:38,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:38,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:38,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:33:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 02:33:38,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:38,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 02:33:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:33:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:33:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:38,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:38,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:33:38,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:33:38,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:38,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:33:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 02:33:38,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820622722] [2020-10-14 02:33:38,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:38,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:33:38,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337930784] [2020-10-14 02:33:38,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:33:38,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:38,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:33:38,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:33:38,926 INFO L87 Difference]: Start difference. First operand 12691 states and 15667 transitions. Second operand 5 states. [2020-10-14 02:33:41,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:41,048 INFO L93 Difference]: Finished difference Result 26333 states and 33051 transitions. [2020-10-14 02:33:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:33:41,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 295 [2020-10-14 02:33:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:41,079 INFO L225 Difference]: With dead ends: 26333 [2020-10-14 02:33:41,080 INFO L226 Difference]: Without dead ends: 14036 [2020-10-14 02:33:41,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:33:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14036 states. [2020-10-14 02:33:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14036 to 13258. [2020-10-14 02:33:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13258 states. [2020-10-14 02:33:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13258 states to 13258 states and 16237 transitions. [2020-10-14 02:33:41,292 INFO L78 Accepts]: Start accepts. Automaton has 13258 states and 16237 transitions. Word has length 295 [2020-10-14 02:33:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:41,293 INFO L479 AbstractCegarLoop]: Abstraction has 13258 states and 16237 transitions. [2020-10-14 02:33:41,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:33:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 13258 states and 16237 transitions. [2020-10-14 02:33:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-14 02:33:41,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:41,304 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, 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, 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] [2020-10-14 02:33:41,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 02:33:41,305 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:41,305 INFO L82 PathProgramCache]: Analyzing trace with hash -778364341, now seen corresponding path program 1 times [2020-10-14 02:33:41,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:41,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526691167] [2020-10-14 02:33:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:43,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:43,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-14 02:33:43,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:33:43,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2349 [2020-10-14 02:33:43,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:43,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:43,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:33:43,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:33:43,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-14 02:33:43,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:43,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:43,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:43,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:43,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:43,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:33:43,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:43,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:43,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:43,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:33:43,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:43,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:43,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:44,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:44,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:33:44,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:33:44,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-14 02:33:44,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:44,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:44,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 02:33:44,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 02:33:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:44,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:44,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:33:44,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:44,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:33:44,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:44,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:44,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:33:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 02:33:44,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526691167] [2020-10-14 02:33:44,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:44,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:33:44,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971987543] [2020-10-14 02:33:44,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:33:44,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:44,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:33:44,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:33:44,381 INFO L87 Difference]: Start difference. First operand 13258 states and 16237 transitions. Second operand 7 states. [2020-10-14 02:33:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:47,477 INFO L93 Difference]: Finished difference Result 29831 states and 36462 transitions. [2020-10-14 02:33:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:33:47,478 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-14 02:33:47,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:47,513 INFO L225 Difference]: With dead ends: 29831 [2020-10-14 02:33:47,514 INFO L226 Difference]: Without dead ends: 16767 [2020-10-14 02:33:47,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:33:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16767 states. [2020-10-14 02:33:47,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16767 to 16726. [2020-10-14 02:33:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16726 states. [2020-10-14 02:33:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16726 states to 16726 states and 20094 transitions. [2020-10-14 02:33:47,814 INFO L78 Accepts]: Start accepts. Automaton has 16726 states and 20094 transitions. Word has length 323 [2020-10-14 02:33:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:47,815 INFO L479 AbstractCegarLoop]: Abstraction has 16726 states and 20094 transitions. [2020-10-14 02:33:47,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:33:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 16726 states and 20094 transitions. [2020-10-14 02:33:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 02:33:47,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:47,830 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, 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, 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] [2020-10-14 02:33:47,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 02:33:47,830 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:47,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1528102205, now seen corresponding path program 1 times [2020-10-14 02:33:47,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:47,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387208888] [2020-10-14 02:33:47,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:48,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:48,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 02:33:48,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:33:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-10-14 02:33:48,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:48,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:33:48,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 02:33:48,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:48,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:48,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:48,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:48,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:33:48,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:48,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:48,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:48,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:33:48,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:33:48,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:48,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:33:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:48,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:33:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:49,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:49,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 02:33:49,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 02:33:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:49,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 02:33:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:33:49,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387208888] [2020-10-14 02:33:49,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:49,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:33:49,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791505474] [2020-10-14 02:33:49,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:33:49,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:49,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:33:49,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:33:49,310 INFO L87 Difference]: Start difference. First operand 16726 states and 20094 transitions. Second operand 7 states. [2020-10-14 02:33:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:53,671 INFO L93 Difference]: Finished difference Result 36548 states and 44362 transitions. [2020-10-14 02:33:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:33:53,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 02:33:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:53,707 INFO L225 Difference]: With dead ends: 36548 [2020-10-14 02:33:53,707 INFO L226 Difference]: Without dead ends: 20016 [2020-10-14 02:33:53,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:33:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20016 states. [2020-10-14 02:33:53,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20016 to 19792. [2020-10-14 02:33:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19792 states. [2020-10-14 02:33:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19792 states to 19792 states and 23955 transitions. [2020-10-14 02:33:54,025 INFO L78 Accepts]: Start accepts. Automaton has 19792 states and 23955 transitions. Word has length 337 [2020-10-14 02:33:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:54,026 INFO L479 AbstractCegarLoop]: Abstraction has 19792 states and 23955 transitions. [2020-10-14 02:33:54,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:33:54,026 INFO L276 IsEmpty]: Start isEmpty. Operand 19792 states and 23955 transitions. [2020-10-14 02:33:54,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-14 02:33:54,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:54,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 02:33:54,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 02:33:54,042 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:54,042 INFO L82 PathProgramCache]: Analyzing trace with hash -795770666, now seen corresponding path program 1 times [2020-10-14 02:33:54,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:54,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161047172] [2020-10-14 02:33:54,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:55,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:55,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-14 02:33:55,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:33:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-10-14 02:33:55,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:55,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 02:33:55,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:33:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:55,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:33:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:55,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:55,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:33:55,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:55,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:33:55,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:55,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:55,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:55,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:33:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:55,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:55,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:33:55,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 02:33:55,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:55,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:33:55,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:55,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:33:55,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:33:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:55,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:55,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:55,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 02:33:55,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:33:55,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:55,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:33:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:33:55,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:33:55,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 02:33:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:55,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:55,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:33:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:33:55,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:33:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:33:55,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:33:55,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:33:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:33:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:33:55,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:33:55,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:33:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 02:33:55,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161047172] [2020-10-14 02:33:55,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:33:55,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:33:55,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902288694] [2020-10-14 02:33:55,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:33:55,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:33:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:33:55,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:33:55,636 INFO L87 Difference]: Start difference. First operand 19792 states and 23955 transitions. Second operand 8 states. [2020-10-14 02:33:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:33:58,688 INFO L93 Difference]: Finished difference Result 40582 states and 49045 transitions. [2020-10-14 02:33:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:33:58,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 364 [2020-10-14 02:33:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:33:58,744 INFO L225 Difference]: With dead ends: 40582 [2020-10-14 02:33:58,744 INFO L226 Difference]: Without dead ends: 20988 [2020-10-14 02:33:58,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:33:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20988 states. [2020-10-14 02:33:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20988 to 19800. [2020-10-14 02:33:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19800 states. [2020-10-14 02:33:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19800 states to 19800 states and 23981 transitions. [2020-10-14 02:33:59,181 INFO L78 Accepts]: Start accepts. Automaton has 19800 states and 23981 transitions. Word has length 364 [2020-10-14 02:33:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:33:59,182 INFO L479 AbstractCegarLoop]: Abstraction has 19800 states and 23981 transitions. [2020-10-14 02:33:59,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:33:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 19800 states and 23981 transitions. [2020-10-14 02:33:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 02:33:59,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:33:59,195 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, 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, 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] [2020-10-14 02:33:59,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 02:33:59,195 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:33:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:33:59,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1942824214, now seen corresponding path program 1 times [2020-10-14 02:33:59,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:33:59,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016378034] [2020-10-14 02:33:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:33:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:33:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:33:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:01,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:01,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-14 02:34:01,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:34:01,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2385 [2020-10-14 02:34:01,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:01,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:34:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 02:34:01,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-14 02:34:01,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:01,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:01,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:01,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:01,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:34:01,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:01,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:01,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:01,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:01,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:34:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:01,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:34:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:02,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:02,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:34:02,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:02,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 02:34:02,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:02,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:34:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 02:34:02,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 191 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:34:02,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016378034] [2020-10-14 02:34:02,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:02,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 02:34:02,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230559017] [2020-10-14 02:34:02,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 02:34:02,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:02,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 02:34:02,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 02:34:02,313 INFO L87 Difference]: Start difference. First operand 19800 states and 23981 transitions. Second operand 9 states. [2020-10-14 02:34:07,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:07,926 INFO L93 Difference]: Finished difference Result 35180 states and 43473 transitions. [2020-10-14 02:34:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 02:34:07,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 376 [2020-10-14 02:34:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:07,992 INFO L225 Difference]: With dead ends: 35180 [2020-10-14 02:34:07,993 INFO L226 Difference]: Without dead ends: 35178 [2020-10-14 02:34:08,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:34:08,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35178 states. [2020-10-14 02:34:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35178 to 31376. [2020-10-14 02:34:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31376 states. [2020-10-14 02:34:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31376 states to 31376 states and 38658 transitions. [2020-10-14 02:34:08,563 INFO L78 Accepts]: Start accepts. Automaton has 31376 states and 38658 transitions. Word has length 376 [2020-10-14 02:34:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:08,563 INFO L479 AbstractCegarLoop]: Abstraction has 31376 states and 38658 transitions. [2020-10-14 02:34:08,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 02:34:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 31376 states and 38658 transitions. [2020-10-14 02:34:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-14 02:34:08,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:08,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:34:08,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 02:34:08,580 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1210642165, now seen corresponding path program 1 times [2020-10-14 02:34:08,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:08,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068073282] [2020-10-14 02:34:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:09,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:09,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-14 02:34:09,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:34:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-10-14 02:34:09,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:09,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 02:34:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:34:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:09,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:09,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:09,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:34:09,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:09,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:09,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:09,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:09,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:34:09,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:34:09,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:09,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:09,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:34:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:09,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:09,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:09,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 02:34:09,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:09,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:34:09,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:09,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:34:09,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:09,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 02:34:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:09,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:09,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:34:09,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 02:34:09,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:09,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:34:09,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 02:34:10,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068073282] [2020-10-14 02:34:10,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:10,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:34:10,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927206865] [2020-10-14 02:34:10,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:10,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:10,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:10,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:10,051 INFO L87 Difference]: Start difference. First operand 31376 states and 38658 transitions. Second operand 7 states. [2020-10-14 02:34:14,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:14,131 INFO L93 Difference]: Finished difference Result 67134 states and 82480 transitions. [2020-10-14 02:34:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:34:14,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 391 [2020-10-14 02:34:14,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:14,204 INFO L225 Difference]: With dead ends: 67134 [2020-10-14 02:34:14,205 INFO L226 Difference]: Without dead ends: 35576 [2020-10-14 02:34:14,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:34:14,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35576 states. [2020-10-14 02:34:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35576 to 31184. [2020-10-14 02:34:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31184 states. [2020-10-14 02:34:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31184 states to 31184 states and 38289 transitions. [2020-10-14 02:34:14,692 INFO L78 Accepts]: Start accepts. Automaton has 31184 states and 38289 transitions. Word has length 391 [2020-10-14 02:34:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:14,692 INFO L479 AbstractCegarLoop]: Abstraction has 31184 states and 38289 transitions. [2020-10-14 02:34:14,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:34:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 31184 states and 38289 transitions. [2020-10-14 02:34:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-14 02:34:14,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:14,705 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:34:14,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 02:34:14,705 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:14,705 INFO L82 PathProgramCache]: Analyzing trace with hash -717594076, now seen corresponding path program 1 times [2020-10-14 02:34:14,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:14,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912160622] [2020-10-14 02:34:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:14,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:15,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:15,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-14 02:34:15,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:15,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-14 02:34:15,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:15,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 246 [2020-10-14 02:34:15,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:34:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:15,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:15,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:15,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:15,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:15,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:15,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:34:15,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:15,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:15,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:15,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:34:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:34:15,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:15,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:15,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:34:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:15,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:15,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:15,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:34:15,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 02:34:15,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:15,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:34:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:15,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 02:34:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:15,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:15,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:34:15,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 02:34:15,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:15,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:34:15,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 02:34:15,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912160622] [2020-10-14 02:34:15,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:15,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:34:15,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109956830] [2020-10-14 02:34:15,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:15,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:15,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:15,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:15,956 INFO L87 Difference]: Start difference. First operand 31184 states and 38289 transitions. Second operand 7 states. [2020-10-14 02:34:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:19,246 INFO L93 Difference]: Finished difference Result 64026 states and 78480 transitions. [2020-10-14 02:34:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:34:19,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-14 02:34:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:19,339 INFO L225 Difference]: With dead ends: 64026 [2020-10-14 02:34:19,339 INFO L226 Difference]: Without dead ends: 33040 [2020-10-14 02:34:19,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:34:19,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33040 states. [2020-10-14 02:34:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33040 to 31954. [2020-10-14 02:34:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31954 states. [2020-10-14 02:34:19,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31954 states to 31954 states and 39140 transitions. [2020-10-14 02:34:19,882 INFO L78 Accepts]: Start accepts. Automaton has 31954 states and 39140 transitions. Word has length 398 [2020-10-14 02:34:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:19,883 INFO L479 AbstractCegarLoop]: Abstraction has 31954 states and 39140 transitions. [2020-10-14 02:34:19,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:34:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 31954 states and 39140 transitions. [2020-10-14 02:34:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-14 02:34:19,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:19,904 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:34:19,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 02:34:19,905 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:19,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash 249926107, now seen corresponding path program 1 times [2020-10-14 02:34:19,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:19,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371451280] [2020-10-14 02:34:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:20,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:21,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:22,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:22,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 416 [2020-10-14 02:34:22,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:34:22,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2956 [2020-10-14 02:34:22,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:22,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:22,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:34:22,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:34:22,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:23,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:23,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:23,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:23,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:34:23,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:23,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:23,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:23,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:23,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:34:23,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 02:34:23,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:23,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:34:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:23,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:34:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:23,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:23,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 02:34:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:34:23,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:23,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:34:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:23,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 02:34:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:23,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:23,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:34:23,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:23,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 02:34:23,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:23,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:34:23,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:23,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 297 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 02:34:23,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371451280] [2020-10-14 02:34:23,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:23,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:34:23,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290844595] [2020-10-14 02:34:23,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:23,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:23,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:23,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:23,425 INFO L87 Difference]: Start difference. First operand 31954 states and 39140 transitions. Second operand 7 states. [2020-10-14 02:34:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:26,766 INFO L93 Difference]: Finished difference Result 70596 states and 87101 transitions. [2020-10-14 02:34:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:34:26,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-14 02:34:26,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:26,843 INFO L225 Difference]: With dead ends: 70596 [2020-10-14 02:34:26,844 INFO L226 Difference]: Without dead ends: 38840 [2020-10-14 02:34:26,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:34:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38840 states. [2020-10-14 02:34:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38840 to 36670. [2020-10-14 02:34:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36670 states. [2020-10-14 02:34:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36670 states to 36670 states and 44900 transitions. [2020-10-14 02:34:27,496 INFO L78 Accepts]: Start accepts. Automaton has 36670 states and 44900 transitions. Word has length 402 [2020-10-14 02:34:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:27,497 INFO L479 AbstractCegarLoop]: Abstraction has 36670 states and 44900 transitions. [2020-10-14 02:34:27,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:34:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 36670 states and 44900 transitions. [2020-10-14 02:34:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-14 02:34:27,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:27,515 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:34:27,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 02:34:27,516 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:27,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1159942575, now seen corresponding path program 1 times [2020-10-14 02:34:27,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:27,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497056472] [2020-10-14 02:34:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:29,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:30,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:30,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-14 02:34:30,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:34:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2857 [2020-10-14 02:34:30,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:30,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:34:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 02:34:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:30,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:30,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:30,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:34:30,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:30,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:30,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:30,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:30,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:34:30,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 02:34:30,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:30,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:30,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:34:30,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:30,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:34:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:30,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:34:30,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:30,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 02:34:30,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:30,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:34:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:31,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-14 02:34:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:31,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:31,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:34:31,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:34:31,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:31,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:34:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 301 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 02:34:31,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497056472] [2020-10-14 02:34:31,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:31,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:34:31,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029473144] [2020-10-14 02:34:31,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:31,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:31,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:31,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:31,171 INFO L87 Difference]: Start difference. First operand 36670 states and 44900 transitions. Second operand 7 states. [2020-10-14 02:34:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:34,959 INFO L93 Difference]: Finished difference Result 71578 states and 89031 transitions. [2020-10-14 02:34:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:34:34,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-14 02:34:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:35,073 INFO L225 Difference]: With dead ends: 71578 [2020-10-14 02:34:35,073 INFO L226 Difference]: Without dead ends: 35488 [2020-10-14 02:34:35,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:34:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35488 states. [2020-10-14 02:34:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35488 to 32626. [2020-10-14 02:34:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32626 states. [2020-10-14 02:34:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32626 states to 32626 states and 39868 transitions. [2020-10-14 02:34:35,725 INFO L78 Accepts]: Start accepts. Automaton has 32626 states and 39868 transitions. Word has length 408 [2020-10-14 02:34:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:35,726 INFO L479 AbstractCegarLoop]: Abstraction has 32626 states and 39868 transitions. [2020-10-14 02:34:35,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:34:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 32626 states and 39868 transitions. [2020-10-14 02:34:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-14 02:34:35,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:35,740 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:34:35,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 02:34:35,741 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:35,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:35,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1327988276, now seen corresponding path program 1 times [2020-10-14 02:34:35,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:35,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080471710] [2020-10-14 02:34:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:35,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:36,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:38,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:38,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 02:34:38,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:34:38,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2568 [2020-10-14 02:34:38,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:38,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 02:34:38,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:34:38,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:38,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:38,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:38,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:34:38,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:38,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:38,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:38,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:38,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:34:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:34:38,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:38,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:38,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:34:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:38,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:38,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 02:34:38,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 02:34:38,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:38,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:38,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:38,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:38,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 02:34:38,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 02:34:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:38,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:39,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:39,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:34:39,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:39,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 02:34:39,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:39,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:39,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:39,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:34:39,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 02:34:39,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080471710] [2020-10-14 02:34:39,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:39,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:34:39,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401091180] [2020-10-14 02:34:39,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:39,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:39,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:39,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:39,603 INFO L87 Difference]: Start difference. First operand 32626 states and 39868 transitions. Second operand 7 states. [2020-10-14 02:34:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:43,804 INFO L93 Difference]: Finished difference Result 64726 states and 79172 transitions. [2020-10-14 02:34:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:34:43,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-14 02:34:43,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:43,865 INFO L225 Difference]: With dead ends: 64726 [2020-10-14 02:34:43,865 INFO L226 Difference]: Without dead ends: 32870 [2020-10-14 02:34:43,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:34:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32870 states. [2020-10-14 02:34:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32870 to 32616. [2020-10-14 02:34:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32616 states. [2020-10-14 02:34:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32616 states to 32616 states and 39811 transitions. [2020-10-14 02:34:44,304 INFO L78 Accepts]: Start accepts. Automaton has 32616 states and 39811 transitions. Word has length 433 [2020-10-14 02:34:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:44,305 INFO L479 AbstractCegarLoop]: Abstraction has 32616 states and 39811 transitions. [2020-10-14 02:34:44,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:34:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 32616 states and 39811 transitions. [2020-10-14 02:34:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-14 02:34:44,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:44,314 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:34:44,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 02:34:44,315 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:44,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:44,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1474135639, now seen corresponding path program 1 times [2020-10-14 02:34:44,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:44,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538657153] [2020-10-14 02:34:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:44,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:44,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:47,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:47,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 02:34:47,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:34:47,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2709 [2020-10-14 02:34:47,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:47,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-14 02:34:47,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:34:47,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:47,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:47,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:47,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:47,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:47,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:34:47,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:47,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:47,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:47,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:47,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:47,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:47,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:47,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:34:47,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 02:34:47,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:47,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:47,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:47,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:47,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:47,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:34:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:47,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:47,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 02:34:47,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:47,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 02:34:47,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:47,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:47,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 02:34:47,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 02:34:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:47,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:47,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:34:47,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 02:34:47,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:47,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:34:47,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:34:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 02:34:48,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538657153] [2020-10-14 02:34:48,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:48,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:34:48,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197274464] [2020-10-14 02:34:48,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:48,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:48,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:48,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:48,071 INFO L87 Difference]: Start difference. First operand 32616 states and 39811 transitions. Second operand 7 states. [2020-10-14 02:34:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:34:51,524 INFO L93 Difference]: Finished difference Result 70129 states and 85501 transitions. [2020-10-14 02:34:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:34:51,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 433 [2020-10-14 02:34:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:34:51,597 INFO L225 Difference]: With dead ends: 70129 [2020-10-14 02:34:51,597 INFO L226 Difference]: Without dead ends: 38283 [2020-10-14 02:34:51,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:34:51,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38283 states. [2020-10-14 02:34:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38283 to 37602. [2020-10-14 02:34:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37602 states. [2020-10-14 02:34:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37602 states to 37602 states and 45065 transitions. [2020-10-14 02:34:52,116 INFO L78 Accepts]: Start accepts. Automaton has 37602 states and 45065 transitions. Word has length 433 [2020-10-14 02:34:52,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:34:52,116 INFO L479 AbstractCegarLoop]: Abstraction has 37602 states and 45065 transitions. [2020-10-14 02:34:52,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:34:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 37602 states and 45065 transitions. [2020-10-14 02:34:52,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-14 02:34:52,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:34:52,128 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:34:52,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 02:34:52,129 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:34:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:34:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1360383684, now seen corresponding path program 1 times [2020-10-14 02:34:52,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:34:52,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113425502] [2020-10-14 02:34:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:34:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:55,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:55,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 467 [2020-10-14 02:34:55,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:34:55,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3663 [2020-10-14 02:34:55,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:55,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-14 02:34:55,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:34:55,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:55,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:34:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:55,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:55,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:55,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:34:55,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:55,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:34:55,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:55,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:55,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:55,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:55,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:34:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:56,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:56,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:56,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:34:56,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:34:56,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:56,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:34:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:56,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:56,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:34:56,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 02:34:56,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:56,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:34:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:56,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:34:56,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:34:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:56,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:56,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:56,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:34:56,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 02:34:56,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:56,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:34:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:34:56,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:34:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:56,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 02:34:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:34:56,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:34:56,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:34:56,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:34:56,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:34:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 02:34:56,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:34:56,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:34:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:34:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:34:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:34:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:34:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-14 02:34:56,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113425502] [2020-10-14 02:34:56,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:34:56,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:34:56,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680346973] [2020-10-14 02:34:56,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:34:56,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:34:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:34:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:34:56,645 INFO L87 Difference]: Start difference. First operand 37602 states and 45065 transitions. Second operand 7 states. [2020-10-14 02:35:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:00,460 INFO L93 Difference]: Finished difference Result 75105 states and 90359 transitions. [2020-10-14 02:35:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:35:00,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 451 [2020-10-14 02:35:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:00,547 INFO L225 Difference]: With dead ends: 75105 [2020-10-14 02:35:00,548 INFO L226 Difference]: Without dead ends: 38273 [2020-10-14 02:35:00,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:35:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38273 states. [2020-10-14 02:35:00,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38273 to 37790. [2020-10-14 02:35:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37790 states. [2020-10-14 02:35:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37790 states to 37790 states and 45137 transitions. [2020-10-14 02:35:01,016 INFO L78 Accepts]: Start accepts. Automaton has 37790 states and 45137 transitions. Word has length 451 [2020-10-14 02:35:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:01,016 INFO L479 AbstractCegarLoop]: Abstraction has 37790 states and 45137 transitions. [2020-10-14 02:35:01,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 37790 states and 45137 transitions. [2020-10-14 02:35:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-10-14 02:35:01,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:01,029 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:35:01,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 02:35:01,030 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:01,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1648081314, now seen corresponding path program 1 times [2020-10-14 02:35:01,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:01,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546418233] [2020-10-14 02:35:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:01,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:01,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:01,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-14 02:35:01,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 02:35:01,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:01,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 299 [2020-10-14 02:35:01,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:35:01,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:01,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:01,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:35:01,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:01,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:01,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:01,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:01,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:01,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:01,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:35:01,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:35:01,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:01,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:01,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:01,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:35:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:01,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:01,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 02:35:01,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:01,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 02:35:01,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:01,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:01,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 02:35:01,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:01,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 02:35:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:02,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:35:02,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:35:02,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:02,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:02,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:35:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-14 02:35:02,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546418233] [2020-10-14 02:35:02,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:02,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:02,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124364239] [2020-10-14 02:35:02,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:02,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:02,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:02,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:02,211 INFO L87 Difference]: Start difference. First operand 37790 states and 45137 transitions. Second operand 7 states. [2020-10-14 02:35:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:05,681 INFO L93 Difference]: Finished difference Result 76611 states and 91468 transitions. [2020-10-14 02:35:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:35:05,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 451 [2020-10-14 02:35:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:05,751 INFO L225 Difference]: With dead ends: 76611 [2020-10-14 02:35:05,752 INFO L226 Difference]: Without dead ends: 39591 [2020-10-14 02:35:05,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:35:05,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39591 states. [2020-10-14 02:35:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39591 to 34330. [2020-10-14 02:35:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34330 states. [2020-10-14 02:35:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34330 states to 34330 states and 40641 transitions. [2020-10-14 02:35:06,212 INFO L78 Accepts]: Start accepts. Automaton has 34330 states and 40641 transitions. Word has length 451 [2020-10-14 02:35:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:06,212 INFO L479 AbstractCegarLoop]: Abstraction has 34330 states and 40641 transitions. [2020-10-14 02:35:06,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 34330 states and 40641 transitions. [2020-10-14 02:35:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-14 02:35:06,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:06,222 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:35:06,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 02:35:06,222 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:06,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:06,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1882575557, now seen corresponding path program 1 times [2020-10-14 02:35:06,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:06,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409413616] [2020-10-14 02:35:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:06,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:08,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:09,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:10,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:10,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-14 02:35:10,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 02:35:10,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4224 [2020-10-14 02:35:10,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:10,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:35:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-14 02:35:10,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:10,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:10,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:10,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:10,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:10,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:35:10,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:10,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:10,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:35:10,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:10,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:10,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 02:35:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:10,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:10,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 02:35:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:10,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:10,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 02:35:10,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:10,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 02:35:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:10,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:10,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:10,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:35:10,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 02:35:10,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:10,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:35:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-14 02:35:11,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409413616] [2020-10-14 02:35:11,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:11,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:35:11,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528862807] [2020-10-14 02:35:11,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:35:11,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:11,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:35:11,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:35:11,099 INFO L87 Difference]: Start difference. First operand 34330 states and 40641 transitions. Second operand 6 states. [2020-10-14 02:35:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:13,478 INFO L93 Difference]: Finished difference Result 67936 states and 80531 transitions. [2020-10-14 02:35:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:35:13,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 470 [2020-10-14 02:35:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:13,539 INFO L225 Difference]: With dead ends: 67936 [2020-10-14 02:35:13,539 INFO L226 Difference]: Without dead ends: 34376 [2020-10-14 02:35:13,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34376 states. [2020-10-14 02:35:13,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34376 to 34297. [2020-10-14 02:35:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34297 states. [2020-10-14 02:35:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34297 states to 34297 states and 40568 transitions. [2020-10-14 02:35:13,971 INFO L78 Accepts]: Start accepts. Automaton has 34297 states and 40568 transitions. Word has length 470 [2020-10-14 02:35:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:13,972 INFO L479 AbstractCegarLoop]: Abstraction has 34297 states and 40568 transitions. [2020-10-14 02:35:13,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:35:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 34297 states and 40568 transitions. [2020-10-14 02:35:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-14 02:35:13,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:13,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:35:13,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 02:35:13,981 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1384018755, now seen corresponding path program 1 times [2020-10-14 02:35:13,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:13,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793734153] [2020-10-14 02:35:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:14,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:14,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:14,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-14 02:35:14,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:14,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-14 02:35:14,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:14,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-14 02:35:14,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:35:14,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:14,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:14,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:14,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:14,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:14,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:35:14,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:14,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:14,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:14,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:14,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:14,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:14,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:35:14,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:14,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:14,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:14,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:35:14,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:35:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:14,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:14,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 02:35:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 02:35:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:15,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:15,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:35:15,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 02:35:15,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:15,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:35:15,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-14 02:35:15,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793734153] [2020-10-14 02:35:15,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:15,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:15,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611724093] [2020-10-14 02:35:15,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:15,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:15,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:15,432 INFO L87 Difference]: Start difference. First operand 34297 states and 40568 transitions. Second operand 7 states. [2020-10-14 02:35:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:18,759 INFO L93 Difference]: Finished difference Result 69808 states and 82680 transitions. [2020-10-14 02:35:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:35:18,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-14 02:35:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:18,873 INFO L225 Difference]: With dead ends: 69808 [2020-10-14 02:35:18,873 INFO L226 Difference]: Without dead ends: 36281 [2020-10-14 02:35:18,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:35:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36281 states. [2020-10-14 02:35:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36281 to 35827. [2020-10-14 02:35:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35827 states. [2020-10-14 02:35:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35827 states to 35827 states and 42313 transitions. [2020-10-14 02:35:19,570 INFO L78 Accepts]: Start accepts. Automaton has 35827 states and 42313 transitions. Word has length 470 [2020-10-14 02:35:19,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:19,570 INFO L479 AbstractCegarLoop]: Abstraction has 35827 states and 42313 transitions. [2020-10-14 02:35:19,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:19,571 INFO L276 IsEmpty]: Start isEmpty. Operand 35827 states and 42313 transitions. [2020-10-14 02:35:19,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-14 02:35:19,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:19,579 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-14 02:35:19,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 02:35:19,580 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:19,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:19,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2134904913, now seen corresponding path program 1 times [2020-10-14 02:35:19,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:19,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096570792] [2020-10-14 02:35:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:19,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:22,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:22,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-14 02:35:22,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:35:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2761 [2020-10-14 02:35:22,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:22,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-14 02:35:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:35:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:22,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:22,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:22,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:22,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:22,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:22,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:22,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:35:22,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:35:22,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:22,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:22,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:22,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:35:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:22,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:22,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:22,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 02:35:22,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:22,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:35:22,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:22,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:22,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 02:35:22,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:22,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-14 02:35:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:22,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:22,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:35:22,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:22,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:35:22,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:22,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:22,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:35:22,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-14 02:35:23,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096570792] [2020-10-14 02:35:23,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:23,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:23,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673645809] [2020-10-14 02:35:23,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:23,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:23,045 INFO L87 Difference]: Start difference. First operand 35827 states and 42313 transitions. Second operand 7 states. [2020-10-14 02:35:27,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:27,491 INFO L93 Difference]: Finished difference Result 75650 states and 89112 transitions. [2020-10-14 02:35:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:35:27,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 477 [2020-10-14 02:35:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:27,564 INFO L225 Difference]: With dead ends: 75650 [2020-10-14 02:35:27,565 INFO L226 Difference]: Without dead ends: 37867 [2020-10-14 02:35:27,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:35:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37867 states. [2020-10-14 02:35:27,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37867 to 33659. [2020-10-14 02:35:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33659 states. [2020-10-14 02:35:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33659 states to 33659 states and 38463 transitions. [2020-10-14 02:35:28,290 INFO L78 Accepts]: Start accepts. Automaton has 33659 states and 38463 transitions. Word has length 477 [2020-10-14 02:35:28,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:28,291 INFO L479 AbstractCegarLoop]: Abstraction has 33659 states and 38463 transitions. [2020-10-14 02:35:28,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 33659 states and 38463 transitions. [2020-10-14 02:35:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-14 02:35:28,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:28,301 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-14 02:35:28,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 02:35:28,301 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2093355307, now seen corresponding path program 1 times [2020-10-14 02:35:28,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:28,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054461735] [2020-10-14 02:35:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:30,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:30,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 508 [2020-10-14 02:35:30,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2175 [2020-10-14 02:35:30,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:30,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:35:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 342 [2020-10-14 02:35:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 02:35:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:30,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:30,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:30,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:30,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:30,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:30,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:30,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:30,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:35:30,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 02:35:30,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:30,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:30,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:35:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:30,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:31,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:31,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:35:31,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:31,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 02:35:31,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:31,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:31,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 02:35:31,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-14 02:35:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:31,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:31,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:35:31,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 02:35:31,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:31,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:35:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:35:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 373 proven. 5 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 02:35:31,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054461735] [2020-10-14 02:35:31,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:31,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 02:35:31,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182073230] [2020-10-14 02:35:31,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 02:35:31,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:31,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 02:35:31,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 02:35:31,667 INFO L87 Difference]: Start difference. First operand 33659 states and 38463 transitions. Second operand 9 states. [2020-10-14 02:35:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:37,298 INFO L93 Difference]: Finished difference Result 74466 states and 85388 transitions. [2020-10-14 02:35:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:35:37,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 494 [2020-10-14 02:35:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:37,369 INFO L225 Difference]: With dead ends: 74466 [2020-10-14 02:35:37,369 INFO L226 Difference]: Without dead ends: 40813 [2020-10-14 02:35:37,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:35:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40813 states. [2020-10-14 02:35:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40813 to 39009. [2020-10-14 02:35:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39009 states. [2020-10-14 02:35:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39009 states to 39009 states and 44214 transitions. [2020-10-14 02:35:37,831 INFO L78 Accepts]: Start accepts. Automaton has 39009 states and 44214 transitions. Word has length 494 [2020-10-14 02:35:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:37,832 INFO L479 AbstractCegarLoop]: Abstraction has 39009 states and 44214 transitions. [2020-10-14 02:35:37,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 02:35:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 39009 states and 44214 transitions. [2020-10-14 02:35:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-14 02:35:37,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:37,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:35:37,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 02:35:37,850 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:37,851 INFO L82 PathProgramCache]: Analyzing trace with hash -457472027, now seen corresponding path program 1 times [2020-10-14 02:35:37,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:37,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659655699] [2020-10-14 02:35:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 585 [2020-10-14 02:35:39,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1184 [2020-10-14 02:35:39,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 02:35:39,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 02:35:39,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:39,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:39,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:35:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:35:39,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:35:39,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:39,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 02:35:39,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:39,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 02:35:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:39,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:39,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:35:39,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 02:35:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:39,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:39,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 02:35:39,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 514 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 02:35:40,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659655699] [2020-10-14 02:35:40,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:40,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:35:40,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566729050] [2020-10-14 02:35:40,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:35:40,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:40,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:35:40,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:35:40,006 INFO L87 Difference]: Start difference. First operand 39009 states and 44214 transitions. Second operand 7 states. [2020-10-14 02:35:43,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:43,032 INFO L93 Difference]: Finished difference Result 78103 states and 88573 transitions. [2020-10-14 02:35:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:35:43,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 571 [2020-10-14 02:35:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:43,094 INFO L225 Difference]: With dead ends: 78103 [2020-10-14 02:35:43,094 INFO L226 Difference]: Without dead ends: 39864 [2020-10-14 02:35:43,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:35:43,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39864 states. [2020-10-14 02:35:43,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39864 to 39581. [2020-10-14 02:35:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39581 states. [2020-10-14 02:35:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39581 states to 39581 states and 44866 transitions. [2020-10-14 02:35:43,600 INFO L78 Accepts]: Start accepts. Automaton has 39581 states and 44866 transitions. Word has length 571 [2020-10-14 02:35:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:43,601 INFO L479 AbstractCegarLoop]: Abstraction has 39581 states and 44866 transitions. [2020-10-14 02:35:43,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:35:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 39581 states and 44866 transitions. [2020-10-14 02:35:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-14 02:35:43,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:43,621 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:35:43,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 02:35:43,621 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:43,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:43,622 INFO L82 PathProgramCache]: Analyzing trace with hash -969594199, now seen corresponding path program 1 times [2020-10-14 02:35:43,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:43,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438164388] [2020-10-14 02:35:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:43,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:48,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:48,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-10-14 02:35:48,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:35:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 02:35:48,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:48,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 466 [2020-10-14 02:35:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:35:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:48,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:48,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:48,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:48,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:48,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:48,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:48,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:48,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:48,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:48,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:35:48,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:35:48,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:48,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:48,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:35:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:48,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:35:48,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 02:35:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:48,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:48,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:35:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:48,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:49,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:49,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:35:49,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:49,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 02:35:49,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:49,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:49,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:49,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:35:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:49,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:49,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 02:35:49,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:49,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:35:49,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:49,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:35:49,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-14 02:35:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:49,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:49,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:35:49,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 02:35:49,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:49,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:35:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:35:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:35:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:35:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 686 proven. 2 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2020-10-14 02:35:49,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438164388] [2020-10-14 02:35:49,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:49,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:35:49,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932359729] [2020-10-14 02:35:49,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:35:49,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:49,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:35:49,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:35:49,788 INFO L87 Difference]: Start difference. First operand 39581 states and 44866 transitions. Second operand 8 states. [2020-10-14 02:35:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:53,387 INFO L93 Difference]: Finished difference Result 80007 states and 90656 transitions. [2020-10-14 02:35:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:35:53,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 615 [2020-10-14 02:35:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:35:53,465 INFO L225 Difference]: With dead ends: 80007 [2020-10-14 02:35:53,466 INFO L226 Difference]: Without dead ends: 41196 [2020-10-14 02:35:53,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:35:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41196 states. [2020-10-14 02:35:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41196 to 40529. [2020-10-14 02:35:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40529 states. [2020-10-14 02:35:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40529 states to 40529 states and 45868 transitions. [2020-10-14 02:35:53,962 INFO L78 Accepts]: Start accepts. Automaton has 40529 states and 45868 transitions. Word has length 615 [2020-10-14 02:35:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:35:53,963 INFO L479 AbstractCegarLoop]: Abstraction has 40529 states and 45868 transitions. [2020-10-14 02:35:53,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:35:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 40529 states and 45868 transitions. [2020-10-14 02:35:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-10-14 02:35:53,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:35:53,982 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:35:53,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 02:35:53,982 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:35:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:35:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1466693631, now seen corresponding path program 1 times [2020-10-14 02:35:53,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:35:53,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014989865] [2020-10-14 02:35:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:35:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:54,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:54,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:55,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:56,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:56,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 639 [2020-10-14 02:35:56,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 02:35:56,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2219 [2020-10-14 02:35:56,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:56,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-14 02:35:56,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-14 02:35:56,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:56,611 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-14 02:35:56,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:35:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:56,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:56,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:56,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:35:56,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:56,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:35:56,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:56,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:56,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:35:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:56,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:56,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:35:56,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:35:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:35:56,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:56,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:35:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:35:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:56,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:35:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:56,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:56,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:56,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:35:56,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:56,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 02:35:56,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:56,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:35:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:56,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 02:35:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:56,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:56,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:35:56,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:56,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:35:56,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:56,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:56,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:56,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:56,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 02:35:56,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:56,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-14 02:35:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:35:57,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:35:57,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:35:57,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:35:57,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:35:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 02:35:57,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:35:57,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:35:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:35:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:35:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 02:35:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:35:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 259 proven. 8 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-14 02:35:57,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014989865] [2020-10-14 02:35:57,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:35:57,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:35:57,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896235279] [2020-10-14 02:35:57,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:35:57,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:35:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:35:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:35:57,314 INFO L87 Difference]: Start difference. First operand 40529 states and 45868 transitions. Second operand 5 states. [2020-10-14 02:35:59,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:35:59,941 INFO L93 Difference]: Finished difference Result 79996 states and 90576 transitions. [2020-10-14 02:35:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:35:59,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 623 [2020-10-14 02:35:59,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:36:00,005 INFO L225 Difference]: With dead ends: 79996 [2020-10-14 02:36:00,005 INFO L226 Difference]: Without dead ends: 40043 [2020-10-14 02:36:00,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:36:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40043 states. [2020-10-14 02:36:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40043 to 39759. [2020-10-14 02:36:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39759 states. [2020-10-14 02:36:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39759 states to 39759 states and 44999 transitions. [2020-10-14 02:36:00,476 INFO L78 Accepts]: Start accepts. Automaton has 39759 states and 44999 transitions. Word has length 623 [2020-10-14 02:36:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:36:00,477 INFO L479 AbstractCegarLoop]: Abstraction has 39759 states and 44999 transitions. [2020-10-14 02:36:00,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:36:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 39759 states and 44999 transitions. [2020-10-14 02:36:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-10-14 02:36:00,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:36:00,499 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-14 02:36:00,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 02:36:00,500 INFO L427 AbstractCegarLoop]: === Iteration 34 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:36:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:36:00,500 INFO L82 PathProgramCache]: Analyzing trace with hash -41884995, now seen corresponding path program 1 times [2020-10-14 02:36:00,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:36:00,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621804763] [2020-10-14 02:36:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:36:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:36:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:36:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking...