/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/loop-new/count_by_2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:21:27,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:21:27,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:21:27,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:21:27,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:21:27,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:21:27,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:21:27,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:21:27,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:21:27,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:21:27,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:21:27,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:21:27,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:21:27,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:21:27,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:21:27,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:21:27,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:21:27,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:21:27,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:21:27,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:21:27,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:21:27,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:21:27,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:21:27,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:21:27,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:21:27,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:21:27,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:21:27,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:21:27,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:21:27,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:21:27,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:21:27,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:21:27,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:21:27,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:21:27,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:21:27,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:21:27,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:21:27,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:21:27,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:21:27,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:21:27,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:21:27,180 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 05:21:27,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:21:27,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:21:27,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:21:27,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:21:27,205 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:21:27,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:21:27,205 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:21:27,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:21:27,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:21:27,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:21:27,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:21:27,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:21:27,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:21:27,207 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:21:27,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:21:27,207 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:21:27,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:21:27,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:21:27,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:21:27,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:21:27,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:21:27,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:21:27,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:21:27,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:21:27,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:21:27,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:21:27,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:21:27,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:21:27,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:21:27,210 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 05:21:27,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:21:27,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:21:27,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:21:27,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:21:27,520 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:21:27,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_2.i [2020-10-14 05:21:27,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a14ba820/f64f08e425294299a84f3d7200b167f1/FLAG1e90edafb [2020-10-14 05:21:28,030 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:21:28,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_2.i [2020-10-14 05:21:28,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a14ba820/f64f08e425294299a84f3d7200b167f1/FLAG1e90edafb [2020-10-14 05:21:28,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9a14ba820/f64f08e425294299a84f3d7200b167f1 [2020-10-14 05:21:28,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:21:28,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:21:28,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:21:28,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:21:28,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:21:28,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4d019f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28, skipping insertion in model container [2020-10-14 05:21:28,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:21:28,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:21:28,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:21:28,695 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:21:28,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:21:28,718 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:21:28,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28 WrapperNode [2020-10-14 05:21:28,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:21:28,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:21:28,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:21:28,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:21:28,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (1/1) ... [2020-10-14 05:21:28,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:21:28,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:21:28,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:21:28,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:21:28,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (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 05:21:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:21:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:21:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:21:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:21:28,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:21:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:21:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:21:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:21:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:21:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:21:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:21:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:21:28,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:21:29,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:21:29,030 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 05:21:29,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:21:29 BoogieIcfgContainer [2020-10-14 05:21:29,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:21:29,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:21:29,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:21:29,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:21:29,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:21:28" (1/3) ... [2020-10-14 05:21:29,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729990e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:21:29, skipping insertion in model container [2020-10-14 05:21:29,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:21:28" (2/3) ... [2020-10-14 05:21:29,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729990e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:21:29, skipping insertion in model container [2020-10-14 05:21:29,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:21:29" (3/3) ... [2020-10-14 05:21:29,041 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_2.i [2020-10-14 05:21:29,050 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:21:29,058 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:21:29,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:21:29,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:21:29,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:21:29,092 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:21:29,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:21:29,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:21:29,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:21:29,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:21:29,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:21:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-14 05:21:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:21:29,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:29,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:29,112 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash 650151859, now seen corresponding path program 1 times [2020-10-14 05:21:29,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:29,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741295715] [2020-10-14 05:21:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:29,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:29,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:21:29,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:21:29,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:29,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:21:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:29,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 05:21:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:21:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:29,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:29,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:29,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:29,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:21:29,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:29,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:29,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:29,315 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 05:21:29,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741295715] [2020-10-14 05:21:29,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:21:29,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 05:21:29,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165461100] [2020-10-14 05:21:29,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 05:21:29,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 05:21:29,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:21:29,345 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-14 05:21:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:29,379 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-14 05:21:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:21:29,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 05:21:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:29,390 INFO L225 Difference]: With dead ends: 33 [2020-10-14 05:21:29,390 INFO L226 Difference]: Without dead ends: 14 [2020-10-14 05:21:29,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 05:21:29,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-14 05:21:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-14 05:21:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-14 05:21:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-14 05:21:29,433 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-10-14 05:21:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:29,434 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-14 05:21:29,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 05:21:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-14 05:21:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 05:21:29,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:29,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:29,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:21:29,436 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:29,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1133927695, now seen corresponding path program 1 times [2020-10-14 05:21:29,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:29,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788327646] [2020-10-14 05:21:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:29,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:21:29,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:21:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:29,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 05:21:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:29,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:21:29,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:29,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:29,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:21:29,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:29,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:29,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788327646] [2020-10-14 05:21:29,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:29,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:21:29,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62929456] [2020-10-14 05:21:29,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:21:29,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:29,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:21:29,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:21:29,606 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2020-10-14 05:21:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:29,628 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-14 05:21:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:21:29,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 05:21:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:29,630 INFO L225 Difference]: With dead ends: 21 [2020-10-14 05:21:29,630 INFO L226 Difference]: Without dead ends: 16 [2020-10-14 05:21:29,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:21:29,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-14 05:21:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-10-14 05:21:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 05:21:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-14 05:21:29,637 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-10-14 05:21:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:29,637 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-14 05:21:29,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:21:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-14 05:21:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 05:21:29,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:29,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:29,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:21:29,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:29,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1942427985, now seen corresponding path program 2 times [2020-10-14 05:21:29,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:29,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459968175] [2020-10-14 05:21:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:29,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:29,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:21:29,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 05:21:29,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:29,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:21:29,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:21:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:21:29,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:29,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:21:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:29,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:29,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459968175] [2020-10-14 05:21:29,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:29,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 05:21:29,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900361198] [2020-10-14 05:21:29,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:21:29,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:29,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:21:29,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:21:29,818 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-14 05:21:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:29,842 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-14 05:21:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:21:29,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-14 05:21:29,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:29,844 INFO L225 Difference]: With dead ends: 23 [2020-10-14 05:21:29,844 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 05:21:29,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:21:29,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 05:21:29,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-10-14 05:21:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-14 05:21:29,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-14 05:21:29,850 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-10-14 05:21:29,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:29,850 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-14 05:21:29,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:21:29,851 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-14 05:21:29,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 05:21:29,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:29,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:29,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:21:29,852 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1522126099, now seen corresponding path program 3 times [2020-10-14 05:21:29,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:29,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383750113] [2020-10-14 05:21:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:29,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:29,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:29,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 05:21:29,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 05:21:29,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:29,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:21:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:21:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:29,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:29,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:29,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:29,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:29,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:29,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:29,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:29,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:29,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383750113] [2020-10-14 05:21:29,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:29,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 05:21:29,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841512677] [2020-10-14 05:21:29,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 05:21:29,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:29,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 05:21:29,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:21:29,952 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-10-14 05:21:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:29,979 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-14 05:21:29,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:21:29,980 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 05:21:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:29,981 INFO L225 Difference]: With dead ends: 25 [2020-10-14 05:21:29,981 INFO L226 Difference]: Without dead ends: 20 [2020-10-14 05:21:29,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:21:29,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-14 05:21:29,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-14 05:21:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-14 05:21:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-14 05:21:29,986 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-10-14 05:21:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:29,987 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-14 05:21:29,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 05:21:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-14 05:21:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 05:21:29,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:29,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:29,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:21:29,989 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:29,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:29,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1338939477, now seen corresponding path program 4 times [2020-10-14 05:21:29,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:29,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006302370] [2020-10-14 05:21:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:30,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:30,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 05:21:30,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:30,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 05:21:30,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:30,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:21:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:30,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:21:30,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:30,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:30,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:30,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:30,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006302370] [2020-10-14 05:21:30,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:30,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 05:21:30,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598538236] [2020-10-14 05:21:30,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:21:30,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:30,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:21:30,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:21:30,200 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-14 05:21:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:30,244 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-10-14 05:21:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:21:30,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-14 05:21:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:30,246 INFO L225 Difference]: With dead ends: 27 [2020-10-14 05:21:30,246 INFO L226 Difference]: Without dead ends: 22 [2020-10-14 05:21:30,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:21:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-14 05:21:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-14 05:21:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 05:21:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-14 05:21:30,252 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-10-14 05:21:30,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:30,252 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-14 05:21:30,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:21:30,252 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-14 05:21:30,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:21:30,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:30,253 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:30,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:21:30,254 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:30,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:30,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1390254871, now seen corresponding path program 5 times [2020-10-14 05:21:30,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:30,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828884599] [2020-10-14 05:21:30,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:30,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:30,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 05:21:30,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 05:21:30,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:30,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:21:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:21:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 05:21:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:30,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:30,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:30,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:30,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:30,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:30,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:30,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828884599] [2020-10-14 05:21:30,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:30,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:21:30,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485019550] [2020-10-14 05:21:30,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:21:30,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:30,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:21:30,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:21:30,447 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2020-10-14 05:21:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:30,501 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-14 05:21:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:21:30,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-14 05:21:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:30,503 INFO L225 Difference]: With dead ends: 29 [2020-10-14 05:21:30,503 INFO L226 Difference]: Without dead ends: 24 [2020-10-14 05:21:30,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:21:30,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-14 05:21:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-14 05:21:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 05:21:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-10-14 05:21:30,511 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-10-14 05:21:30,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:30,512 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-10-14 05:21:30,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:21:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-10-14 05:21:30,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 05:21:30,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:30,514 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:30,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:21:30,515 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:30,516 INFO L82 PathProgramCache]: Analyzing trace with hash 835259047, now seen corresponding path program 6 times [2020-10-14 05:21:30,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:30,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592693541] [2020-10-14 05:21:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:30,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:30,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:30,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 05:21:30,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 05:21:30,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:30,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:21:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:30,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:21:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:30,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:30,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:30,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:30,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:30,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:30,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:30,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:30,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:30,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:30,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592693541] [2020-10-14 05:21:30,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:30,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:21:30,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634605828] [2020-10-14 05:21:30,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:21:30,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:30,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:21:30,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:21:30,688 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-10-14 05:21:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:30,716 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-10-14 05:21:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:21:30,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-14 05:21:30,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:30,718 INFO L225 Difference]: With dead ends: 31 [2020-10-14 05:21:30,718 INFO L226 Difference]: Without dead ends: 26 [2020-10-14 05:21:30,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:21:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-14 05:21:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-14 05:21:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 05:21:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-14 05:21:30,723 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-10-14 05:21:30,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:30,724 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-14 05:21:30,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:21:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-14 05:21:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 05:21:30,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:30,725 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:30,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:21:30,725 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:30,726 INFO L82 PathProgramCache]: Analyzing trace with hash 660420837, now seen corresponding path program 7 times [2020-10-14 05:21:30,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:30,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438211812] [2020-10-14 05:21:30,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:30,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:21:30,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 05:21:30,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:30,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:21:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:30,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:21:30,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:30,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:30,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:30,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:21:30,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:30,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:30,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:30,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:30,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438211812] [2020-10-14 05:21:30,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:30,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 05:21:30,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341473942] [2020-10-14 05:21:30,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:21:30,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:30,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:21:30,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:21:30,948 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 10 states. [2020-10-14 05:21:31,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:31,001 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-14 05:21:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:21:31,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-14 05:21:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:31,003 INFO L225 Difference]: With dead ends: 33 [2020-10-14 05:21:31,003 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 05:21:31,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:21:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 05:21:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-14 05:21:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 05:21:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-14 05:21:31,009 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-10-14 05:21:31,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:31,009 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-14 05:21:31,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:21:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-14 05:21:31,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 05:21:31,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:31,011 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:31,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:21:31,011 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:31,012 INFO L82 PathProgramCache]: Analyzing trace with hash 144625571, now seen corresponding path program 8 times [2020-10-14 05:21:31,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:31,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914145687] [2020-10-14 05:21:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:31,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:31,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:21:31,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:31,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 05:21:31,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:31,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:21:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:21:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:31,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:31,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:31,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:31,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:31,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:31,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:31,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:31,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:31,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:31,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:21:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:31,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914145687] [2020-10-14 05:21:31,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:31,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:21:31,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807236173] [2020-10-14 05:21:31,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:21:31,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:31,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:21:31,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:21:31,214 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2020-10-14 05:21:31,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:31,269 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-10-14 05:21:31,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:21:31,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-14 05:21:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:31,271 INFO L225 Difference]: With dead ends: 35 [2020-10-14 05:21:31,271 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 05:21:31,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:21:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 05:21:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-14 05:21:31,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 05:21:31,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-10-14 05:21:31,277 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-10-14 05:21:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:31,278 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-10-14 05:21:31,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:21:31,279 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-10-14 05:21:31,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:21:31,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:31,280 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:31,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:21:31,281 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:31,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:31,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1613386015, now seen corresponding path program 9 times [2020-10-14 05:21:31,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:31,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951826003] [2020-10-14 05:21:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:31,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:31,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:31,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 05:21:31,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:31,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 05:21:31,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:31,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:31,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:21:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:21:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22 [2020-10-14 05:21:31,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:31,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:31,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:31,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:31,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:31,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:31,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:31,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951826003] [2020-10-14 05:21:31,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:31,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:21:31,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979915001] [2020-10-14 05:21:31,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:21:31,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:31,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:21:31,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:21:31,493 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 12 states. [2020-10-14 05:21:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:31,536 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-10-14 05:21:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:21:31,537 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-14 05:21:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:31,538 INFO L225 Difference]: With dead ends: 37 [2020-10-14 05:21:31,538 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 05:21:31,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:21:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 05:21:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 05:21:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 05:21:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-14 05:21:31,543 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-10-14 05:21:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:31,543 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-14 05:21:31,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:21:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-14 05:21:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 05:21:31,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:31,545 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:31,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:21:31,545 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:31,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1154594463, now seen corresponding path program 10 times [2020-10-14 05:21:31,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:31,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329555703] [2020-10-14 05:21:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:31,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:31,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 05:21:31,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:31,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 05:21:31,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:31,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:21:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:21:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:31,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:31,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:31,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:31,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:31,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:31,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:31,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:31,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:31,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329555703] [2020-10-14 05:21:31,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:31,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:21:31,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428172814] [2020-10-14 05:21:31,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:21:31,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:31,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:21:31,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:21:31,734 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 13 states. [2020-10-14 05:21:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:31,775 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-10-14 05:21:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:21:31,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2020-10-14 05:21:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:31,776 INFO L225 Difference]: With dead ends: 39 [2020-10-14 05:21:31,777 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 05:21:31,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:21:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 05:21:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 05:21:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:21:31,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-10-14 05:21:31,782 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-10-14 05:21:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:31,782 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-10-14 05:21:31,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:21:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-10-14 05:21:31,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 05:21:31,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:31,783 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:31,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:21:31,783 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:31,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1695889699, now seen corresponding path program 11 times [2020-10-14 05:21:31,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:31,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315824945] [2020-10-14 05:21:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:31,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:31,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:21:31,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 05:21:31,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:31,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:21:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:31,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:21:31,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:31,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:31,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:31,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:31,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:31,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315824945] [2020-10-14 05:21:31,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:31,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:21:31,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492202941] [2020-10-14 05:21:31,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:21:31,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:31,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:21:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:21:31,986 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 14 states. [2020-10-14 05:21:32,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:32,030 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-10-14 05:21:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:21:32,031 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-14 05:21:32,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:32,032 INFO L225 Difference]: With dead ends: 41 [2020-10-14 05:21:32,032 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 05:21:32,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:21:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 05:21:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-14 05:21:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 05:21:32,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-10-14 05:21:32,037 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2020-10-14 05:21:32,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:32,037 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-10-14 05:21:32,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:21:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-10-14 05:21:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 05:21:32,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:32,039 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:32,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:21:32,039 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:32,039 INFO L82 PathProgramCache]: Analyzing trace with hash -822034533, now seen corresponding path program 12 times [2020-10-14 05:21:32,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:32,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042678152] [2020-10-14 05:21:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:32,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:32,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 05:21:32,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:32,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 05:21:32,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:32,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:21:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 05:21:32,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:32,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:32,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:32,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:32,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:32,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:32,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:32,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:32,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:32,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:32,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042678152] [2020-10-14 05:21:32,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:32,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:21:32,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874659387] [2020-10-14 05:21:32,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:21:32,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:21:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:21:32,277 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 15 states. [2020-10-14 05:21:32,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:32,324 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-10-14 05:21:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:21:32,324 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-10-14 05:21:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:32,325 INFO L225 Difference]: With dead ends: 43 [2020-10-14 05:21:32,325 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:21:32,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:21:32,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:21:32,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-14 05:21:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 05:21:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-14 05:21:32,330 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2020-10-14 05:21:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:32,331 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-14 05:21:32,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:21:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-14 05:21:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 05:21:32,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:32,332 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:32,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:21:32,332 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:32,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1434157273, now seen corresponding path program 13 times [2020-10-14 05:21:32,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:32,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281926093] [2020-10-14 05:21:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:32,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:32,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 05:21:32,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 05:21:32,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:32,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:21:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:21:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:32,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:32,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:32,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:32,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:32,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:32,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:32,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:32,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:32,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:32,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281926093] [2020-10-14 05:21:32,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:32,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:21:32,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045354609] [2020-10-14 05:21:32,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:21:32,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:32,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:21:32,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:21:32,582 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 16 states. [2020-10-14 05:21:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:32,627 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-10-14 05:21:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:21:32,628 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-10-14 05:21:32,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:32,629 INFO L225 Difference]: With dead ends: 45 [2020-10-14 05:21:32,629 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 05:21:32,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:21:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 05:21:32,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 05:21:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 05:21:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-10-14 05:21:32,634 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2020-10-14 05:21:32,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:32,634 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-10-14 05:21:32,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:21:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-10-14 05:21:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 05:21:32,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:32,635 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:32,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:21:32,635 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:32,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:32,636 INFO L82 PathProgramCache]: Analyzing trace with hash 675998359, now seen corresponding path program 14 times [2020-10-14 05:21:32,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:32,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504156078] [2020-10-14 05:21:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:32,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:32,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 05:21:32,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 05:21:32,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:32,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:21:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:21:32,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:32,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:32,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:32,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:32,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:32,909 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:32,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504156078] [2020-10-14 05:21:32,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:32,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:21:32,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790818723] [2020-10-14 05:21:32,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:21:32,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:32,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:21:32,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:21:32,911 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 17 states. [2020-10-14 05:21:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:32,964 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-10-14 05:21:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:21:32,964 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-10-14 05:21:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:32,965 INFO L225 Difference]: With dead ends: 47 [2020-10-14 05:21:32,965 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 05:21:32,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:21:32,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 05:21:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 05:21:32,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 05:21:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-14 05:21:32,970 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2020-10-14 05:21:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:32,970 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-14 05:21:32,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:21:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-14 05:21:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 05:21:32,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:32,971 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:32,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:21:32,972 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:32,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:32,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2065244971, now seen corresponding path program 15 times [2020-10-14 05:21:32,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:32,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977999592] [2020-10-14 05:21:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:33,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:33,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 05:21:33,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 05:21:33,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:33,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:21:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:21:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:33,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:33,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:33,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:33,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:33,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:33,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:33,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:33,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:33,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:33,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977999592] [2020-10-14 05:21:33,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:33,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:21:33,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927774310] [2020-10-14 05:21:33,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:21:33,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:33,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:21:33,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:21:33,268 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2020-10-14 05:21:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:33,322 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-10-14 05:21:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:21:33,323 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-10-14 05:21:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:33,323 INFO L225 Difference]: With dead ends: 49 [2020-10-14 05:21:33,324 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 05:21:33,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:21:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 05:21:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-14 05:21:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 05:21:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-10-14 05:21:33,328 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2020-10-14 05:21:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:33,329 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-10-14 05:21:33,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:21:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-10-14 05:21:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:21:33,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:33,330 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:33,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:21:33,330 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:33,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash 709834643, now seen corresponding path program 16 times [2020-10-14 05:21:33,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:33,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733005657] [2020-10-14 05:21:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:33,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:33,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:33,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 05:21:33,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:33,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 05:21:33,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:33,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:21:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:33,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:21:33,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:33,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:33,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:33,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:33,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:33,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:33,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733005657] [2020-10-14 05:21:33,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:33,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:21:33,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394432473] [2020-10-14 05:21:33,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:21:33,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:21:33,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:21:33,670 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 19 states. [2020-10-14 05:21:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:33,727 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-10-14 05:21:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:21:33,727 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-14 05:21:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:33,728 INFO L225 Difference]: With dead ends: 51 [2020-10-14 05:21:33,728 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 05:21:33,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:21:33,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 05:21:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-14 05:21:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 05:21:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-10-14 05:21:33,733 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2020-10-14 05:21:33,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:33,734 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-10-14 05:21:33,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:21:33,734 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-10-14 05:21:33,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 05:21:33,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:33,735 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:33,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:21:33,735 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:33,736 INFO L82 PathProgramCache]: Analyzing trace with hash 386652881, now seen corresponding path program 17 times [2020-10-14 05:21:33,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:33,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912935456] [2020-10-14 05:21:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:33,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:33,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 05:21:33,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 05:21:33,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:33,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:21:33,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:33,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:21:33,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:34,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:34,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:34,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:34,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:34,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:34,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:34,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912935456] [2020-10-14 05:21:34,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:34,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:21:34,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988825377] [2020-10-14 05:21:34,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:21:34,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:34,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:21:34,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:21:34,134 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 20 states. [2020-10-14 05:21:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:34,199 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-10-14 05:21:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:21:34,200 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 44 [2020-10-14 05:21:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:34,200 INFO L225 Difference]: With dead ends: 53 [2020-10-14 05:21:34,201 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:21:34,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:21:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:21:34,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-14 05:21:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 05:21:34,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-10-14 05:21:34,205 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2020-10-14 05:21:34,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:34,206 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-10-14 05:21:34,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:21:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-10-14 05:21:34,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:21:34,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:34,207 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:34,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:21:34,207 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:34,207 INFO L82 PathProgramCache]: Analyzing trace with hash -953375089, now seen corresponding path program 18 times [2020-10-14 05:21:34,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:34,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536280965] [2020-10-14 05:21:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:34,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:34,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 05:21:34,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 05:21:34,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:34,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:21:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 05:21:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:34,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:34,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:34,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:34,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:34,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:34,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536280965] [2020-10-14 05:21:34,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:34,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:21:34,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607874021] [2020-10-14 05:21:34,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:21:34,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:21:34,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:21:34,619 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 21 states. [2020-10-14 05:21:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:34,691 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-10-14 05:21:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:21:34,691 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 46 [2020-10-14 05:21:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:34,693 INFO L225 Difference]: With dead ends: 55 [2020-10-14 05:21:34,693 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 05:21:34,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:21:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 05:21:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-14 05:21:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 05:21:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-10-14 05:21:34,698 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2020-10-14 05:21:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:34,698 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-10-14 05:21:34,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:21:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-10-14 05:21:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:21:34,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:34,699 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:34,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:21:34,699 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:34,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:34,700 INFO L82 PathProgramCache]: Analyzing trace with hash -230065459, now seen corresponding path program 19 times [2020-10-14 05:21:34,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:34,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922672477] [2020-10-14 05:21:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:34,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:21:34,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 05:21:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:34,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:21:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:21:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:35,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:35,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:35,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:35,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:35,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:35,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:35,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:35,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922672477] [2020-10-14 05:21:35,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:35,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:21:35,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947619813] [2020-10-14 05:21:35,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:21:35,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:35,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:21:35,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:21:35,181 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 22 states. [2020-10-14 05:21:35,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:35,252 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-10-14 05:21:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:21:35,253 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 48 [2020-10-14 05:21:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:35,254 INFO L225 Difference]: With dead ends: 57 [2020-10-14 05:21:35,254 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 05:21:35,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:21:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 05:21:35,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-14 05:21:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 05:21:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-10-14 05:21:35,267 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2020-10-14 05:21:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:35,267 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-10-14 05:21:35,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:21:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-10-14 05:21:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:21:35,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:35,268 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:35,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:21:35,268 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:35,269 INFO L82 PathProgramCache]: Analyzing trace with hash -914212981, now seen corresponding path program 20 times [2020-10-14 05:21:35,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:35,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610111367] [2020-10-14 05:21:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:35,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:35,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 05:21:35,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 05:21:35,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:35,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:21:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:21:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:35,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:35,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:35,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:35,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:35,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:35,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:35,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:35,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:35,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610111367] [2020-10-14 05:21:35,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:35,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 05:21:35,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775529774] [2020-10-14 05:21:35,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 05:21:35,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:35,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 05:21:35,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:21:35,740 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 23 states. [2020-10-14 05:21:35,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:35,808 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-10-14 05:21:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:21:35,808 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 50 [2020-10-14 05:21:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:35,809 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:21:35,809 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 05:21:35,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:21:35,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 05:21:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-14 05:21:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:21:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-10-14 05:21:35,816 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2020-10-14 05:21:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:35,816 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-10-14 05:21:35,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 05:21:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-10-14 05:21:35,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:21:35,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:35,818 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:35,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:21:35,818 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:35,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:35,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1249985335, now seen corresponding path program 21 times [2020-10-14 05:21:35,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:35,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957830295] [2020-10-14 05:21:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:35,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:35,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:21:35,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 05:21:35,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:35,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 05:21:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:21:35,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:36,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:36,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:36,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:36,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:36,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:36,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:36,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957830295] [2020-10-14 05:21:36,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:36,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:21:36,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631647159] [2020-10-14 05:21:36,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:21:36,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:36,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:21:36,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:21:36,293 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 24 states. [2020-10-14 05:21:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:36,364 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-10-14 05:21:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:21:36,364 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 52 [2020-10-14 05:21:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:36,365 INFO L225 Difference]: With dead ends: 61 [2020-10-14 05:21:36,365 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 05:21:36,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:21:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 05:21:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-14 05:21:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 05:21:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-10-14 05:21:36,369 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2020-10-14 05:21:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:36,369 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-10-14 05:21:36,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:21:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-10-14 05:21:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:21:36,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:36,370 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:36,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:21:36,370 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:36,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1804670329, now seen corresponding path program 22 times [2020-10-14 05:21:36,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:36,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013327721] [2020-10-14 05:21:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:36,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:36,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:21:36,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:36,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 05:21:36,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:36,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:36,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:21:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:36,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:21:36,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:36,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:36,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:36,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:36,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:36,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:36,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:36,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:36,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:36,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013327721] [2020-10-14 05:21:36,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:36,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:21:36,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598217065] [2020-10-14 05:21:36,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:21:36,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:36,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:21:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:21:36,862 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 25 states. [2020-10-14 05:21:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:36,927 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-10-14 05:21:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:21:36,927 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 54 [2020-10-14 05:21:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:36,928 INFO L225 Difference]: With dead ends: 63 [2020-10-14 05:21:36,928 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 05:21:36,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:21:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 05:21:36,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-14 05:21:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 05:21:36,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-10-14 05:21:36,931 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2020-10-14 05:21:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:36,931 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-10-14 05:21:36,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:21:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-10-14 05:21:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:21:36,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:36,932 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:36,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:21:36,933 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:36,933 INFO L82 PathProgramCache]: Analyzing trace with hash 2013962437, now seen corresponding path program 23 times [2020-10-14 05:21:36,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:36,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624476653] [2020-10-14 05:21:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:36,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:37,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:37,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:21:37,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:37,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 05:21:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:37,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 05:21:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:21:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:37,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:37,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:37,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:37,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624476653] [2020-10-14 05:21:37,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:37,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:21:37,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530321393] [2020-10-14 05:21:37,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:21:37,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:37,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:21:37,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:21:37,544 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 26 states. [2020-10-14 05:21:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:37,651 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2020-10-14 05:21:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 05:21:37,651 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 56 [2020-10-14 05:21:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:37,652 INFO L225 Difference]: With dead ends: 65 [2020-10-14 05:21:37,652 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 05:21:37,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:21:37,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 05:21:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-14 05:21:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 05:21:37,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-10-14 05:21:37,656 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2020-10-14 05:21:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:37,656 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-10-14 05:21:37,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:21:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-10-14 05:21:37,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:21:37,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:37,657 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:37,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:21:37,658 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:37,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:37,658 INFO L82 PathProgramCache]: Analyzing trace with hash -476987517, now seen corresponding path program 24 times [2020-10-14 05:21:37,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:37,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764661430] [2020-10-14 05:21:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:37,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:37,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:37,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:21:37,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:37,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 05:21:37,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:37,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:37,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 05:21:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:37,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:21:37,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:38,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:38,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:38,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:38,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:38,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:38,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:38,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:38,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:38,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:38,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:38,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764661430] [2020-10-14 05:21:38,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:38,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:21:38,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704739154] [2020-10-14 05:21:38,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:21:38,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:38,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:21:38,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:21:38,226 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 27 states. [2020-10-14 05:21:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:38,302 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-10-14 05:21:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 05:21:38,302 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 58 [2020-10-14 05:21:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:38,303 INFO L225 Difference]: With dead ends: 67 [2020-10-14 05:21:38,303 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 05:21:38,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:21:38,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 05:21:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-14 05:21:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 05:21:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-10-14 05:21:38,307 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2020-10-14 05:21:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:38,307 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-10-14 05:21:38,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:21:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-10-14 05:21:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:21:38,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:38,308 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:38,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:21:38,308 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:38,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1983109439, now seen corresponding path program 25 times [2020-10-14 05:21:38,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:38,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312919795] [2020-10-14 05:21:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:38,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:38,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:38,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:21:38,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:38,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 05:21:38,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:38,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:21:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:21:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:38,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:38,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:38,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:38,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:38,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312919795] [2020-10-14 05:21:38,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:38,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:21:38,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962821523] [2020-10-14 05:21:38,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:21:38,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:21:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:21:38,878 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 28 states. [2020-10-14 05:21:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:38,960 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-10-14 05:21:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 05:21:38,961 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 60 [2020-10-14 05:21:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:38,961 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:21:38,962 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 05:21:38,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:21:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 05:21:38,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-14 05:21:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 05:21:38,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2020-10-14 05:21:38,965 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2020-10-14 05:21:38,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:38,965 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2020-10-14 05:21:38,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:21:38,966 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2020-10-14 05:21:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 05:21:38,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:38,966 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:38,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:21:38,967 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:38,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:38,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1962297729, now seen corresponding path program 26 times [2020-10-14 05:21:38,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:38,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372399721] [2020-10-14 05:21:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:39,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:39,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:21:39,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 05:21:39,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:39,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 05:21:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:21:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:39,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:39,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:39,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:39,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:39,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:39,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:39,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:39,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:39,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372399721] [2020-10-14 05:21:39,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:39,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 05:21:39,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137302206] [2020-10-14 05:21:39,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 05:21:39,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:39,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 05:21:39,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:21:39,576 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 29 states. [2020-10-14 05:21:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:39,658 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2020-10-14 05:21:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 05:21:39,659 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 62 [2020-10-14 05:21:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:39,660 INFO L225 Difference]: With dead ends: 71 [2020-10-14 05:21:39,660 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 05:21:39,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:21:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 05:21:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 05:21:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 05:21:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-10-14 05:21:39,665 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2020-10-14 05:21:39,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:39,665 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-10-14 05:21:39,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 05:21:39,666 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-10-14 05:21:39,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 05:21:39,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:39,666 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:39,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:21:39,667 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:39,667 INFO L82 PathProgramCache]: Analyzing trace with hash 857886397, now seen corresponding path program 27 times [2020-10-14 05:21:39,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:39,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104470789] [2020-10-14 05:21:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:39,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:39,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:21:39,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 05:21:39,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:39,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:21:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:21:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:40,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:40,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:40,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:40,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:40,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:40,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:40,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104470789] [2020-10-14 05:21:40,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:40,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 05:21:40,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434445715] [2020-10-14 05:21:40,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 05:21:40,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:40,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 05:21:40,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:21:40,389 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 30 states. [2020-10-14 05:21:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:40,471 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-10-14 05:21:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:21:40,471 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 64 [2020-10-14 05:21:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:40,472 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:21:40,472 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 05:21:40,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:21:40,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 05:21:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-14 05:21:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 05:21:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-10-14 05:21:40,476 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2020-10-14 05:21:40,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:40,476 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-10-14 05:21:40,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 05:21:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-10-14 05:21:40,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 05:21:40,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:40,477 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:40,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:21:40,477 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:40,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash 930467707, now seen corresponding path program 28 times [2020-10-14 05:21:40,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:40,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082626191] [2020-10-14 05:21:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:40,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:40,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 05:21:40,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 05:21:40,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:40,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:40,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 05:21:40,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:40,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 05:21:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:41,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:41,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:41,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:41,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:41,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:41,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:41,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082626191] [2020-10-14 05:21:41,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:41,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:21:41,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541556705] [2020-10-14 05:21:41,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:21:41,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:41,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:21:41,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:21:41,151 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 31 states. [2020-10-14 05:21:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:41,240 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-10-14 05:21:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 05:21:41,240 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 66 [2020-10-14 05:21:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:41,241 INFO L225 Difference]: With dead ends: 75 [2020-10-14 05:21:41,242 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 05:21:41,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:21:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 05:21:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-14 05:21:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 05:21:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2020-10-14 05:21:41,247 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2020-10-14 05:21:41,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:41,248 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2020-10-14 05:21:41,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:21:41,248 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2020-10-14 05:21:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 05:21:41,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:41,249 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:41,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:21:41,249 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:41,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1961629881, now seen corresponding path program 29 times [2020-10-14 05:21:41,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:41,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369591386] [2020-10-14 05:21:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:41,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:41,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 05:21:41,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:41,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 05:21:41,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:41,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 05:21:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:41,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 05:21:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:41,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:41,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:41,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:41,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:41,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:41,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:41,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:41,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:41,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369591386] [2020-10-14 05:21:41,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:41,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:21:41,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832946325] [2020-10-14 05:21:41,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:21:41,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:41,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:21:41,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:21:41,955 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 32 states. [2020-10-14 05:21:42,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:42,041 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-10-14 05:21:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 05:21:42,042 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 68 [2020-10-14 05:21:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:42,043 INFO L225 Difference]: With dead ends: 77 [2020-10-14 05:21:42,043 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 05:21:42,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:21:42,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 05:21:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-14 05:21:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 05:21:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-10-14 05:21:42,047 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2020-10-14 05:21:42,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:42,048 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-10-14 05:21:42,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:21:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-10-14 05:21:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 05:21:42,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:42,049 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:42,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:21:42,049 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:42,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:42,049 INFO L82 PathProgramCache]: Analyzing trace with hash 771033719, now seen corresponding path program 30 times [2020-10-14 05:21:42,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:42,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385027281] [2020-10-14 05:21:42,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:42,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:42,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 05:21:42,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:42,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 05:21:42,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:42,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 05:21:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 05:21:42,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:42,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:42,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:42,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:42,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:42,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:42,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:42,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:42,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:42,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:42,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:42,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385027281] [2020-10-14 05:21:42,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:42,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:21:42,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707123061] [2020-10-14 05:21:42,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:21:42,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:42,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:21:42,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:21:42,783 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 33 states. [2020-10-14 05:21:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:42,890 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-10-14 05:21:42,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:21:42,891 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 70 [2020-10-14 05:21:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:42,892 INFO L225 Difference]: With dead ends: 79 [2020-10-14 05:21:42,892 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 05:21:42,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:21:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 05:21:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-14 05:21:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 05:21:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2020-10-14 05:21:42,897 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2020-10-14 05:21:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:42,897 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2020-10-14 05:21:42,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:21:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2020-10-14 05:21:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 05:21:42,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:42,898 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:42,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 05:21:42,899 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:42,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:42,899 INFO L82 PathProgramCache]: Analyzing trace with hash -930577227, now seen corresponding path program 31 times [2020-10-14 05:21:42,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:42,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556051082] [2020-10-14 05:21:42,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:42,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:43,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:43,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 05:21:43,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 05:21:43,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:43,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:21:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 05:21:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:43,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:43,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:43,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:43,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:43,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:43,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556051082] [2020-10-14 05:21:43,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:43,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:21:43,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879295808] [2020-10-14 05:21:43,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:21:43,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:43,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:21:43,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:21:43,679 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 34 states. [2020-10-14 05:21:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:43,781 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-10-14 05:21:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 05:21:43,781 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 72 [2020-10-14 05:21:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:43,782 INFO L225 Difference]: With dead ends: 81 [2020-10-14 05:21:43,782 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 05:21:43,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:21:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 05:21:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-14 05:21:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 05:21:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2020-10-14 05:21:43,787 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2020-10-14 05:21:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:43,787 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2020-10-14 05:21:43,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:21:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2020-10-14 05:21:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 05:21:43,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:43,789 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:43,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 05:21:43,789 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:43,789 INFO L82 PathProgramCache]: Analyzing trace with hash 203843443, now seen corresponding path program 32 times [2020-10-14 05:21:43,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:43,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765748251] [2020-10-14 05:21:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:44,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:44,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:21:44,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:44,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 05:21:44,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:44,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 05:21:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 05:21:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:44,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:44,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:44,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:44,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:44,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765748251] [2020-10-14 05:21:44,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:44,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 05:21:44,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502454379] [2020-10-14 05:21:44,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 05:21:44,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:44,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 05:21:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:21:44,814 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 35 states. [2020-10-14 05:21:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:44,957 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2020-10-14 05:21:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:21:44,958 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 74 [2020-10-14 05:21:44,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:44,959 INFO L225 Difference]: With dead ends: 83 [2020-10-14 05:21:44,960 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 05:21:44,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:21:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 05:21:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-14 05:21:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 05:21:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-10-14 05:21:44,964 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2020-10-14 05:21:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:44,965 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-10-14 05:21:44,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 05:21:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-10-14 05:21:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 05:21:44,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:44,966 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:44,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 05:21:44,967 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:44,967 INFO L82 PathProgramCache]: Analyzing trace with hash -539585871, now seen corresponding path program 33 times [2020-10-14 05:21:44,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:44,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553996145] [2020-10-14 05:21:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:44,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:45,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:45,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 05:21:45,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 05:21:45,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:45,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:21:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:45,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 05:21:45,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:45,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:45,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:45,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:45,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:45,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:45,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:45,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:45,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553996145] [2020-10-14 05:21:45,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:45,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 05:21:45,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344423432] [2020-10-14 05:21:45,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 05:21:45,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:45,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 05:21:45,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:21:45,855 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 36 states. [2020-10-14 05:21:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:45,962 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-10-14 05:21:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 05:21:45,962 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 76 [2020-10-14 05:21:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:45,963 INFO L225 Difference]: With dead ends: 85 [2020-10-14 05:21:45,963 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 05:21:45,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:21:45,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 05:21:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-14 05:21:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 05:21:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2020-10-14 05:21:45,972 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2020-10-14 05:21:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:45,973 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2020-10-14 05:21:45,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 05:21:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2020-10-14 05:21:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 05:21:45,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:45,976 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:45,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 05:21:45,976 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:45,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2010585489, now seen corresponding path program 34 times [2020-10-14 05:21:45,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:45,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910091145] [2020-10-14 05:21:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:45,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:46,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 05:21:46,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 05:21:46,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:46,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 05:21:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 05:21:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:46,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:46,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:46,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:46,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:46,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:46,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910091145] [2020-10-14 05:21:46,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:46,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 05:21:46,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856099225] [2020-10-14 05:21:46,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 05:21:46,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:46,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 05:21:46,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:21:46,914 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 37 states. [2020-10-14 05:21:47,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:47,041 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-10-14 05:21:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:21:47,042 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 78 [2020-10-14 05:21:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:47,043 INFO L225 Difference]: With dead ends: 87 [2020-10-14 05:21:47,043 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 05:21:47,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:21:47,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 05:21:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 05:21:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 05:21:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-10-14 05:21:47,048 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2020-10-14 05:21:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:47,048 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-10-14 05:21:47,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 05:21:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-10-14 05:21:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 05:21:47,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:47,049 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:47,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 05:21:47,050 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:47,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:47,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1697989293, now seen corresponding path program 35 times [2020-10-14 05:21:47,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:47,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263321319] [2020-10-14 05:21:47,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:47,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:47,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 05:21:47,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-14 05:21:47,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:47,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:21:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:47,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 05:21:47,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:47,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:47,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:47,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:47,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:47,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:47,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:47,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:47,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:48,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263321319] [2020-10-14 05:21:48,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:48,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-14 05:21:48,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751870860] [2020-10-14 05:21:48,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-14 05:21:48,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:48,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-14 05:21:48,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:21:48,003 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 38 states. [2020-10-14 05:21:48,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:48,125 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-10-14 05:21:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 05:21:48,126 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 80 [2020-10-14 05:21:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:48,127 INFO L225 Difference]: With dead ends: 89 [2020-10-14 05:21:48,127 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 05:21:48,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:21:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 05:21:48,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-14 05:21:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 05:21:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2020-10-14 05:21:48,131 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2020-10-14 05:21:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:48,131 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2020-10-14 05:21:48,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-14 05:21:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2020-10-14 05:21:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 05:21:48,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:48,132 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:48,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 05:21:48,133 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:48,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:48,133 INFO L82 PathProgramCache]: Analyzing trace with hash 815499115, now seen corresponding path program 36 times [2020-10-14 05:21:48,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:48,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922265433] [2020-10-14 05:21:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:48,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 05:21:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-14 05:21:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:48,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 05:21:48,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 05:21:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:49,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:49,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:49,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:49,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:49,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:49,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922265433] [2020-10-14 05:21:49,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:49,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 05:21:49,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72316378] [2020-10-14 05:21:49,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 05:21:49,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 05:21:49,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 05:21:49,083 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 39 states. [2020-10-14 05:21:49,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:49,196 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-10-14 05:21:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 05:21:49,201 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 82 [2020-10-14 05:21:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:49,202 INFO L225 Difference]: With dead ends: 91 [2020-10-14 05:21:49,202 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 05:21:49,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 05:21:49,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 05:21:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-14 05:21:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 05:21:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-10-14 05:21:49,206 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2020-10-14 05:21:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:49,206 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-10-14 05:21:49,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 05:21:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-10-14 05:21:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 05:21:49,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:49,207 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:49,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 05:21:49,207 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:49,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:49,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1149004631, now seen corresponding path program 37 times [2020-10-14 05:21:49,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:49,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718126642] [2020-10-14 05:21:49,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:49,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:49,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:49,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 05:21:49,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-14 05:21:49,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:49,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 05:21:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 05:21:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:50,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:50,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:50,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:50,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:50,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:50,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:50,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:50,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:50,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718126642] [2020-10-14 05:21:50,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:50,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-14 05:21:50,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592305712] [2020-10-14 05:21:50,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-14 05:21:50,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:50,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-14 05:21:50,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:21:50,249 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 40 states. [2020-10-14 05:21:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:50,391 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2020-10-14 05:21:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 05:21:50,391 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 84 [2020-10-14 05:21:50,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:50,392 INFO L225 Difference]: With dead ends: 93 [2020-10-14 05:21:50,392 INFO L226 Difference]: Without dead ends: 88 [2020-10-14 05:21:50,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:21:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-14 05:21:50,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-14 05:21:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 05:21:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2020-10-14 05:21:50,396 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2020-10-14 05:21:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:50,396 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2020-10-14 05:21:50,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-14 05:21:50,397 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2020-10-14 05:21:50,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 05:21:50,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:50,397 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:50,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 05:21:50,398 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:50,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:50,398 INFO L82 PathProgramCache]: Analyzing trace with hash 748505703, now seen corresponding path program 38 times [2020-10-14 05:21:50,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:50,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84232457] [2020-10-14 05:21:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:50,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:50,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:50,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 05:21:50,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 05:21:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:50,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-14 05:21:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 05:21:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:51,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:51,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:51,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:51,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84232457] [2020-10-14 05:21:51,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:51,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-14 05:21:51,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784364476] [2020-10-14 05:21:51,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-14 05:21:51,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-14 05:21:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:21:51,441 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 41 states. [2020-10-14 05:21:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:51,583 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2020-10-14 05:21:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 05:21:51,584 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 86 [2020-10-14 05:21:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:51,584 INFO L225 Difference]: With dead ends: 95 [2020-10-14 05:21:51,585 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 05:21:51,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 05:21:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 05:21:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-14 05:21:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 05:21:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2020-10-14 05:21:51,589 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2020-10-14 05:21:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:51,590 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2020-10-14 05:21:51,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-14 05:21:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2020-10-14 05:21:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 05:21:51,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:51,591 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:51,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 05:21:51,591 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:51,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1105164123, now seen corresponding path program 39 times [2020-10-14 05:21:51,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:51,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516207454] [2020-10-14 05:21:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:51,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:51,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 05:21:51,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:51,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 05:21:51,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:51,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 05:21:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:51,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 05:21:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:52,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:52,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:52,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:52,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:52,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:52,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:52,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:52,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516207454] [2020-10-14 05:21:52,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:52,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-14 05:21:52,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080826457] [2020-10-14 05:21:52,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-14 05:21:52,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:52,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-14 05:21:52,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:21:52,727 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 42 states. [2020-10-14 05:21:52,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:52,864 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2020-10-14 05:21:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 05:21:52,865 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 88 [2020-10-14 05:21:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:52,866 INFO L225 Difference]: With dead ends: 97 [2020-10-14 05:21:52,866 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 05:21:52,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:21:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 05:21:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-14 05:21:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 05:21:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-10-14 05:21:52,877 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2020-10-14 05:21:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:52,877 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-10-14 05:21:52,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-14 05:21:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-10-14 05:21:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 05:21:52,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:52,880 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:52,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 05:21:52,881 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash -70439069, now seen corresponding path program 40 times [2020-10-14 05:21:52,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:52,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929735035] [2020-10-14 05:21:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:53,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:53,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 05:21:53,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-14 05:21:53,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:53,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-14 05:21:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 05:21:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:53,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:53,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:53,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:53,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:53,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:53,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:54,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929735035] [2020-10-14 05:21:54,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:54,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-14 05:21:54,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813181834] [2020-10-14 05:21:54,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-14 05:21:54,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:54,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-14 05:21:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:21:54,007 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 43 states. [2020-10-14 05:21:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:54,158 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-10-14 05:21:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 05:21:54,160 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 90 [2020-10-14 05:21:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:54,161 INFO L225 Difference]: With dead ends: 99 [2020-10-14 05:21:54,161 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 05:21:54,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:21:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 05:21:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-14 05:21:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-14 05:21:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2020-10-14 05:21:54,167 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2020-10-14 05:21:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:54,167 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2020-10-14 05:21:54,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-14 05:21:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2020-10-14 05:21:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-14 05:21:54,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:54,170 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:54,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 05:21:54,170 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash -2132074847, now seen corresponding path program 41 times [2020-10-14 05:21:54,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:54,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038681823] [2020-10-14 05:21:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:54,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:54,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 05:21:54,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 05:21:54,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:54,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 05:21:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:54,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 05:21:54,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:55,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:55,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:55,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:55,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:55,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:55,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:55,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038681823] [2020-10-14 05:21:55,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:55,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-14 05:21:55,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122194301] [2020-10-14 05:21:55,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-14 05:21:55,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:55,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-14 05:21:55,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:21:55,353 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 44 states. [2020-10-14 05:21:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:55,482 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2020-10-14 05:21:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 05:21:55,482 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 92 [2020-10-14 05:21:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:55,483 INFO L225 Difference]: With dead ends: 101 [2020-10-14 05:21:55,483 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 05:21:55,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:21:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 05:21:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-14 05:21:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 05:21:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-10-14 05:21:55,495 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2020-10-14 05:21:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:55,496 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-10-14 05:21:55,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-14 05:21:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-10-14 05:21:55,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 05:21:55,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:55,499 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:55,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 05:21:55,500 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:55,500 INFO L82 PathProgramCache]: Analyzing trace with hash 910833247, now seen corresponding path program 42 times [2020-10-14 05:21:55,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:55,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094552685] [2020-10-14 05:21:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:55,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:55,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 05:21:55,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 05:21:55,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:55,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-14 05:21:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 05:21:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:56,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:56,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:56,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:56,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:56,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:56,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:56,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:56,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:56,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:56,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:56,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:56,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:21:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:56,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094552685] [2020-10-14 05:21:56,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:56,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-14 05:21:56,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447487744] [2020-10-14 05:21:56,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-14 05:21:56,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:56,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-14 05:21:56,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:21:56,780 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 45 states. [2020-10-14 05:21:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:56,928 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-10-14 05:21:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 05:21:56,929 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 94 [2020-10-14 05:21:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:56,930 INFO L225 Difference]: With dead ends: 103 [2020-10-14 05:21:56,930 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 05:21:56,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 05:21:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 05:21:56,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 05:21:56,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 05:21:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-10-14 05:21:56,935 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2020-10-14 05:21:56,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:56,935 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-10-14 05:21:56,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-14 05:21:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-10-14 05:21:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 05:21:56,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:56,936 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:56,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 05:21:56,937 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:56,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:56,937 INFO L82 PathProgramCache]: Analyzing trace with hash 272783005, now seen corresponding path program 43 times [2020-10-14 05:21:56,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:56,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866146001] [2020-10-14 05:21:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:57,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:57,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 05:21:57,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:57,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 05:21:57,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:57,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-14 05:21:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:57,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 05:21:57,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:58,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:58,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:58,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:58,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:21:58,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:58,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:58,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:58,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866146001] [2020-10-14 05:21:58,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:58,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-14 05:21:58,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402263110] [2020-10-14 05:21:58,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-14 05:21:58,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:58,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-14 05:21:58,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:21:58,214 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 46 states. [2020-10-14 05:21:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:58,351 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2020-10-14 05:21:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 05:21:58,352 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 96 [2020-10-14 05:21:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:58,353 INFO L225 Difference]: With dead ends: 105 [2020-10-14 05:21:58,353 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 05:21:58,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 05:21:58,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 05:21:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-14 05:21:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 05:21:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2020-10-14 05:21:58,358 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2020-10-14 05:21:58,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:58,359 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2020-10-14 05:21:58,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-14 05:21:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2020-10-14 05:21:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 05:21:58,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:58,360 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:58,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 05:21:58,360 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:58,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1286823771, now seen corresponding path program 44 times [2020-10-14 05:21:58,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:58,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276877856] [2020-10-14 05:21:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:58,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:58,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 05:21:58,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 05:21:58,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:58,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-14 05:21:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:21:58,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 05:21:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:21:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:21:59,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:21:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:21:59,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:21:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:21:59,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:21:59,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:21:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:21:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:21:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:21:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:21:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:21:59,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276877856] [2020-10-14 05:21:59,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:21:59,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-14 05:21:59,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129619289] [2020-10-14 05:21:59,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-14 05:21:59,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:21:59,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-14 05:21:59,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 05:21:59,731 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 47 states. [2020-10-14 05:21:59,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:21:59,884 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2020-10-14 05:21:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 05:21:59,884 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 98 [2020-10-14 05:21:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:21:59,886 INFO L225 Difference]: With dead ends: 107 [2020-10-14 05:21:59,886 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 05:21:59,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 05:21:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 05:21:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-14 05:21:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 05:21:59,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2020-10-14 05:21:59,890 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2020-10-14 05:21:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:21:59,891 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2020-10-14 05:21:59,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-14 05:21:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2020-10-14 05:21:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 05:21:59,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:21:59,892 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:21:59,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 05:21:59,892 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:21:59,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:21:59,892 INFO L82 PathProgramCache]: Analyzing trace with hash 822423705, now seen corresponding path program 45 times [2020-10-14 05:21:59,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:21:59,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686743488] [2020-10-14 05:21:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:21:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:21:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:00,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:00,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 05:22:00,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:00,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 05:22:00,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:00,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:00,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-14 05:22:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 05:22:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:01,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:01,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:01,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:01,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:01,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:01,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:01,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686743488] [2020-10-14 05:22:01,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:01,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-14 05:22:01,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780761170] [2020-10-14 05:22:01,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-14 05:22:01,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:01,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-14 05:22:01,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:22:01,344 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 48 states. [2020-10-14 05:22:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:01,492 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2020-10-14 05:22:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-14 05:22:01,493 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 100 [2020-10-14 05:22:01,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:01,494 INFO L225 Difference]: With dead ends: 109 [2020-10-14 05:22:01,494 INFO L226 Difference]: Without dead ends: 104 [2020-10-14 05:22:01,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 05:22:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-14 05:22:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-14 05:22:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-14 05:22:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2020-10-14 05:22:01,499 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2020-10-14 05:22:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:01,499 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2020-10-14 05:22:01,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-14 05:22:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2020-10-14 05:22:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 05:22:01,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:01,500 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:01,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 05:22:01,500 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1210559063, now seen corresponding path program 46 times [2020-10-14 05:22:01,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:01,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050321890] [2020-10-14 05:22:01,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:01,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:01,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:01,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 05:22:01,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-14 05:22:01,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:01,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-14 05:22:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 05:22:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:03,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:03,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:03,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:03,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:03,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:03,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050321890] [2020-10-14 05:22:03,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:03,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-14 05:22:03,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741761029] [2020-10-14 05:22:03,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-14 05:22:03,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:03,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-14 05:22:03,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 05:22:03,015 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 49 states. [2020-10-14 05:22:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:03,158 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2020-10-14 05:22:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-14 05:22:03,159 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 102 [2020-10-14 05:22:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:03,160 INFO L225 Difference]: With dead ends: 111 [2020-10-14 05:22:03,160 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 05:22:03,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 05:22:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 05:22:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-14 05:22:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 05:22:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2020-10-14 05:22:03,165 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2020-10-14 05:22:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:03,166 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2020-10-14 05:22:03,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-14 05:22:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2020-10-14 05:22:03,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 05:22:03,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:03,167 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:03,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 05:22:03,167 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:03,167 INFO L82 PathProgramCache]: Analyzing trace with hash 546483349, now seen corresponding path program 47 times [2020-10-14 05:22:03,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:03,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058181239] [2020-10-14 05:22:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:03,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 05:22:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:04,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:04,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:04,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:22:04,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:04,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:04,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:04,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058181239] [2020-10-14 05:22:04,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:04,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-14 05:22:04,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47040185] [2020-10-14 05:22:04,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-14 05:22:04,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:04,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-14 05:22:04,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:22:04,704 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 50 states. [2020-10-14 05:22:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:04,892 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2020-10-14 05:22:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-14 05:22:04,893 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 104 [2020-10-14 05:22:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:04,893 INFO L225 Difference]: With dead ends: 113 [2020-10-14 05:22:04,894 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 05:22:04,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 05:22:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 05:22:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-14 05:22:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 05:22:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2020-10-14 05:22:04,898 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2020-10-14 05:22:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:04,898 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2020-10-14 05:22:04,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-14 05:22:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2020-10-14 05:22:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 05:22:04,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:04,899 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:04,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 05:22:04,899 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:04,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:04,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1975117997, now seen corresponding path program 48 times [2020-10-14 05:22:04,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:04,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125205160] [2020-10-14 05:22:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:05,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 05:22:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:06,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:06,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:06,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:06,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:06,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:06,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125205160] [2020-10-14 05:22:06,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:06,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-14 05:22:06,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723185596] [2020-10-14 05:22:06,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-14 05:22:06,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:06,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-14 05:22:06,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 05:22:06,460 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 51 states. [2020-10-14 05:22:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:06,606 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2020-10-14 05:22:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-14 05:22:06,607 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 106 [2020-10-14 05:22:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:06,608 INFO L225 Difference]: With dead ends: 115 [2020-10-14 05:22:06,608 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 05:22:06,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 05:22:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 05:22:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-14 05:22:06,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 05:22:06,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2020-10-14 05:22:06,613 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2020-10-14 05:22:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:06,613 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2020-10-14 05:22:06,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-14 05:22:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2020-10-14 05:22:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 05:22:06,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:06,614 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:06,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 05:22:06,615 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:06,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1422510737, now seen corresponding path program 49 times [2020-10-14 05:22:06,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:06,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237446546] [2020-10-14 05:22:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:06,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 05:22:06,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:08,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:08,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:08,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:08,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:08,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:08,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:22:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:08,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237446546] [2020-10-14 05:22:08,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:08,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-14 05:22:08,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065533063] [2020-10-14 05:22:08,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-14 05:22:08,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:08,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-14 05:22:08,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:22:08,266 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 52 states. [2020-10-14 05:22:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:08,422 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-10-14 05:22:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-14 05:22:08,423 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 108 [2020-10-14 05:22:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:08,424 INFO L225 Difference]: With dead ends: 117 [2020-10-14 05:22:08,424 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 05:22:08,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 05:22:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 05:22:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-14 05:22:08,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 05:22:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2020-10-14 05:22:08,429 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2020-10-14 05:22:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:08,429 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2020-10-14 05:22:08,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-14 05:22:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2020-10-14 05:22:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 05:22:08,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:08,430 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:08,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 05:22:08,430 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:08,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1926388145, now seen corresponding path program 50 times [2020-10-14 05:22:08,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:08,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679940201] [2020-10-14 05:22:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:08,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:08,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 05:22:08,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-14 05:22:08,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:08,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-14 05:22:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 05:22:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:10,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:22:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:10,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:22:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:10,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679940201] [2020-10-14 05:22:10,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:10,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-14 05:22:10,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361917760] [2020-10-14 05:22:10,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-14 05:22:10,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:10,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-14 05:22:10,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 05:22:10,198 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 53 states. [2020-10-14 05:22:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:10,358 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2020-10-14 05:22:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-14 05:22:10,359 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 110 [2020-10-14 05:22:10,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:10,360 INFO L225 Difference]: With dead ends: 119 [2020-10-14 05:22:10,360 INFO L226 Difference]: Without dead ends: 114 [2020-10-14 05:22:10,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 05:22:10,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-14 05:22:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-14 05:22:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 05:22:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-10-14 05:22:10,364 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2020-10-14 05:22:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:10,364 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-10-14 05:22:10,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-14 05:22:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-10-14 05:22:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 05:22:10,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:10,365 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:10,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 05:22:10,366 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:10,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:10,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1007258253, now seen corresponding path program 51 times [2020-10-14 05:22:10,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:10,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413076723] [2020-10-14 05:22:10,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:10,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:10,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 05:22:10,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 05:22:10,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:10,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-14 05:22:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:10,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 05:22:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:12,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:12,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:12,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:22:12,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:12,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:12,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:12,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413076723] [2020-10-14 05:22:12,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:12,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-14 05:22:12,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543407246] [2020-10-14 05:22:12,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-14 05:22:12,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:12,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-14 05:22:12,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 05:22:12,164 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 54 states. [2020-10-14 05:22:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:12,367 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-10-14 05:22:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-14 05:22:12,368 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 112 [2020-10-14 05:22:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:12,368 INFO L225 Difference]: With dead ends: 121 [2020-10-14 05:22:12,368 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 05:22:12,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 05:22:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 05:22:12,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-14 05:22:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 05:22:12,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2020-10-14 05:22:12,372 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2020-10-14 05:22:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:12,372 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2020-10-14 05:22:12,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-14 05:22:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2020-10-14 05:22:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 05:22:12,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:12,373 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:12,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 05:22:12,373 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:12,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:12,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1552066741, now seen corresponding path program 52 times [2020-10-14 05:22:12,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:12,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487380482] [2020-10-14 05:22:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:12,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:12,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 05:22:12,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 05:22:12,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:12,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-14 05:22:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 05:22:12,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:14,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:14,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:14,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:14,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:22:14,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:14,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:14,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:14,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:14,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487380482] [2020-10-14 05:22:14,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:14,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-14 05:22:14,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864904259] [2020-10-14 05:22:14,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-14 05:22:14,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:14,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-14 05:22:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 05:22:14,244 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 55 states. [2020-10-14 05:22:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:14,431 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2020-10-14 05:22:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-14 05:22:14,431 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 114 [2020-10-14 05:22:14,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:14,432 INFO L225 Difference]: With dead ends: 123 [2020-10-14 05:22:14,433 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 05:22:14,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 05:22:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 05:22:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-14 05:22:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 05:22:14,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2020-10-14 05:22:14,437 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2020-10-14 05:22:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:14,438 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2020-10-14 05:22:14,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-14 05:22:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2020-10-14 05:22:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 05:22:14,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:14,439 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:14,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 05:22:14,439 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:14,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:14,439 INFO L82 PathProgramCache]: Analyzing trace with hash -47125367, now seen corresponding path program 53 times [2020-10-14 05:22:14,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:14,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879829455] [2020-10-14 05:22:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:14,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:14,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 05:22:14,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-14 05:22:14,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:14,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-14 05:22:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 05:22:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:16,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:16,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:16,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:16,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:16,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:16,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:16,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:16,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:16,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879829455] [2020-10-14 05:22:16,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:16,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-14 05:22:16,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308326597] [2020-10-14 05:22:16,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-14 05:22:16,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:16,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-14 05:22:16,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 05:22:16,392 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 56 states. [2020-10-14 05:22:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:16,588 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2020-10-14 05:22:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-14 05:22:16,589 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 116 [2020-10-14 05:22:16,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:16,590 INFO L225 Difference]: With dead ends: 125 [2020-10-14 05:22:16,590 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 05:22:16,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2020-10-14 05:22:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 05:22:16,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2020-10-14 05:22:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-14 05:22:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2020-10-14 05:22:16,593 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2020-10-14 05:22:16,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:16,594 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2020-10-14 05:22:16,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-14 05:22:16,594 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2020-10-14 05:22:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 05:22:16,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:16,595 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:16,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 05:22:16,595 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:16,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1202443705, now seen corresponding path program 54 times [2020-10-14 05:22:16,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:16,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123720554] [2020-10-14 05:22:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:16,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:16,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 05:22:16,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-14 05:22:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:16,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-14 05:22:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 05:22:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:18,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:18,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:18,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:18,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:18,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:18,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:18,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:18,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:18,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:18,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:18,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:18,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123720554] [2020-10-14 05:22:18,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:18,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-14 05:22:18,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585816581] [2020-10-14 05:22:18,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-14 05:22:18,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:18,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-14 05:22:18,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 05:22:18,593 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 57 states. [2020-10-14 05:22:18,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:18,766 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2020-10-14 05:22:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-14 05:22:18,766 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 118 [2020-10-14 05:22:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:18,768 INFO L225 Difference]: With dead ends: 127 [2020-10-14 05:22:18,768 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 05:22:18,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 05:22:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 05:22:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-14 05:22:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-14 05:22:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2020-10-14 05:22:18,773 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2020-10-14 05:22:18,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:18,773 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2020-10-14 05:22:18,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-14 05:22:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2020-10-14 05:22:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 05:22:18,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:18,774 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:18,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 05:22:18,774 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:18,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:18,775 INFO L82 PathProgramCache]: Analyzing trace with hash 933163141, now seen corresponding path program 55 times [2020-10-14 05:22:18,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:18,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873529552] [2020-10-14 05:22:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:19,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:19,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 05:22:19,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:19,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-10-14 05:22:19,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:19,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-14 05:22:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:19,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 05:22:19,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:20,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:20,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:20,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:20,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:20,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:20,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:20,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:22:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:20,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873529552] [2020-10-14 05:22:20,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:20,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-14 05:22:20,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560958065] [2020-10-14 05:22:20,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-14 05:22:20,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:20,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-14 05:22:20,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 05:22:20,905 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 58 states. [2020-10-14 05:22:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:21,109 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2020-10-14 05:22:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-14 05:22:21,110 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 120 [2020-10-14 05:22:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:21,111 INFO L225 Difference]: With dead ends: 129 [2020-10-14 05:22:21,111 INFO L226 Difference]: Without dead ends: 124 [2020-10-14 05:22:21,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 05:22:21,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-14 05:22:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-14 05:22:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-14 05:22:21,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2020-10-14 05:22:21,115 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2020-10-14 05:22:21,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:21,115 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2020-10-14 05:22:21,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-14 05:22:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2020-10-14 05:22:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 05:22:21,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:21,116 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:21,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 05:22:21,117 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:21,117 INFO L82 PathProgramCache]: Analyzing trace with hash 256974659, now seen corresponding path program 56 times [2020-10-14 05:22:21,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:21,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192572127] [2020-10-14 05:22:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:21,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:21,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:21,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 05:22:21,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-14 05:22:21,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:21,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-14 05:22:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 05:22:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:23,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:23,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:23,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:23,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:23,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:23,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192572127] [2020-10-14 05:22:23,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:23,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-14 05:22:23,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513723222] [2020-10-14 05:22:23,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-14 05:22:23,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:23,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-14 05:22:23,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 05:22:23,297 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 59 states. [2020-10-14 05:22:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:23,475 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2020-10-14 05:22:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-14 05:22:23,476 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 122 [2020-10-14 05:22:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:23,477 INFO L225 Difference]: With dead ends: 131 [2020-10-14 05:22:23,477 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 05:22:23,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 05:22:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 05:22:23,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-14 05:22:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 05:22:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2020-10-14 05:22:23,482 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2020-10-14 05:22:23,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:23,482 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2020-10-14 05:22:23,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-14 05:22:23,482 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2020-10-14 05:22:23,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 05:22:23,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:23,483 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:23,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 05:22:23,484 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:23,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:23,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1020094847, now seen corresponding path program 57 times [2020-10-14 05:22:23,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:23,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919616440] [2020-10-14 05:22:23,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:23,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:23,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 05:22:23,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-14 05:22:23,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:23,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-14 05:22:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 05:22:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:25,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:25,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:25,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:25,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:25,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:25,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:25,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:25,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:25,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919616440] [2020-10-14 05:22:25,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:25,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-14 05:22:25,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750168037] [2020-10-14 05:22:25,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-14 05:22:25,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:25,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-14 05:22:25,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 05:22:25,751 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 60 states. [2020-10-14 05:22:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:25,966 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2020-10-14 05:22:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-14 05:22:25,966 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 124 [2020-10-14 05:22:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:25,967 INFO L225 Difference]: With dead ends: 133 [2020-10-14 05:22:25,967 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 05:22:25,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 05:22:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 05:22:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2020-10-14 05:22:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 05:22:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2020-10-14 05:22:25,972 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2020-10-14 05:22:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:25,972 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2020-10-14 05:22:25,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-14 05:22:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2020-10-14 05:22:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 05:22:25,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:25,973 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:25,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 05:22:25,973 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:25,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:25,974 INFO L82 PathProgramCache]: Analyzing trace with hash 76756543, now seen corresponding path program 58 times [2020-10-14 05:22:25,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:25,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303928073] [2020-10-14 05:22:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:26,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:26,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 05:22:26,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:26,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-10-14 05:22:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:26,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-14 05:22:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 05:22:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:22:28,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:28,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:28,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:28,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:28,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:28,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:28,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:28,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:28,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303928073] [2020-10-14 05:22:28,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:28,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-14 05:22:28,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892073330] [2020-10-14 05:22:28,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-14 05:22:28,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:28,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-14 05:22:28,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 05:22:28,389 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 61 states. [2020-10-14 05:22:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:28,575 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-10-14 05:22:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-14 05:22:28,575 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 126 [2020-10-14 05:22:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:28,577 INFO L225 Difference]: With dead ends: 135 [2020-10-14 05:22:28,577 INFO L226 Difference]: Without dead ends: 130 [2020-10-14 05:22:28,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2020-10-14 05:22:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-14 05:22:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2020-10-14 05:22:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 05:22:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2020-10-14 05:22:28,581 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2020-10-14 05:22:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:28,581 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2020-10-14 05:22:28,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-14 05:22:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2020-10-14 05:22:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 05:22:28,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:28,587 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:28,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 05:22:28,587 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:28,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1883954813, now seen corresponding path program 59 times [2020-10-14 05:22:28,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:28,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780350448] [2020-10-14 05:22:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:29,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:29,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 05:22:29,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:29,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-14 05:22:29,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:29,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-14 05:22:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 05:22:29,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:31,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:31,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:31,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:31,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:31,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:22:31,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:31,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:31,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780350448] [2020-10-14 05:22:31,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:31,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-14 05:22:31,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318890577] [2020-10-14 05:22:31,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-14 05:22:31,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:31,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-14 05:22:31,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 05:22:31,026 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 62 states. [2020-10-14 05:22:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:31,242 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2020-10-14 05:22:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-14 05:22:31,243 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 128 [2020-10-14 05:22:31,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:31,244 INFO L225 Difference]: With dead ends: 137 [2020-10-14 05:22:31,244 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 05:22:31,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 05:22:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 05:22:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-14 05:22:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 05:22:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-10-14 05:22:31,248 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2020-10-14 05:22:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:31,248 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-10-14 05:22:31,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-14 05:22:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-10-14 05:22:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 05:22:31,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:31,250 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:31,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 05:22:31,250 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:31,250 INFO L82 PathProgramCache]: Analyzing trace with hash -860262597, now seen corresponding path program 60 times [2020-10-14 05:22:31,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:31,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084774960] [2020-10-14 05:22:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:31,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:31,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:31,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 05:22:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-14 05:22:31,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:31,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-14 05:22:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 05:22:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:33,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:33,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:33,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:33,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:33,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:33,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:33,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:33,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:33,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:33,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:33,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:33,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:33,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084774960] [2020-10-14 05:22:33,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:33,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-14 05:22:33,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321003735] [2020-10-14 05:22:33,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-14 05:22:33,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:33,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-14 05:22:33,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 05:22:33,800 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 63 states. [2020-10-14 05:22:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:34,019 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2020-10-14 05:22:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-14 05:22:34,020 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 130 [2020-10-14 05:22:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:34,021 INFO L225 Difference]: With dead ends: 139 [2020-10-14 05:22:34,021 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 05:22:34,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 05:22:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 05:22:34,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2020-10-14 05:22:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 05:22:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2020-10-14 05:22:34,024 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2020-10-14 05:22:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:34,025 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2020-10-14 05:22:34,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-14 05:22:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2020-10-14 05:22:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 05:22:34,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:34,026 INFO L422 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:34,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 05:22:34,026 INFO L427 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:34,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:34,027 INFO L82 PathProgramCache]: Analyzing trace with hash -943273863, now seen corresponding path program 61 times [2020-10-14 05:22:34,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:34,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857281826] [2020-10-14 05:22:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:34,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:34,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 05:22:34,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-14 05:22:34,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:34,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-14 05:22:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 05:22:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:36,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:36,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:36,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:36,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:36,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:36,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857281826] [2020-10-14 05:22:36,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:36,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-14 05:22:36,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139595081] [2020-10-14 05:22:36,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-14 05:22:36,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:36,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-14 05:22:36,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 05:22:36,612 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 64 states. [2020-10-14 05:22:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:36,815 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2020-10-14 05:22:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-14 05:22:36,815 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 132 [2020-10-14 05:22:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:36,817 INFO L225 Difference]: With dead ends: 141 [2020-10-14 05:22:36,817 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 05:22:36,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 05:22:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 05:22:36,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-10-14 05:22:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 05:22:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2020-10-14 05:22:36,822 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2020-10-14 05:22:36,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:36,822 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2020-10-14 05:22:36,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-14 05:22:36,822 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2020-10-14 05:22:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 05:22:36,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:36,823 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:36,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 05:22:36,824 INFO L427 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:36,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:36,824 INFO L82 PathProgramCache]: Analyzing trace with hash 887278135, now seen corresponding path program 62 times [2020-10-14 05:22:36,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:36,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941327580] [2020-10-14 05:22:36,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:37,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:37,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 05:22:37,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:37,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-14 05:22:37,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:37,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-14 05:22:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 05:22:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:39,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:39,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:39,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:39,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:39,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941327580] [2020-10-14 05:22:39,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:39,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-14 05:22:39,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025267331] [2020-10-14 05:22:39,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-14 05:22:39,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:39,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-14 05:22:39,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 05:22:39,538 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 65 states. [2020-10-14 05:22:39,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:39,779 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2020-10-14 05:22:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-14 05:22:39,779 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 134 [2020-10-14 05:22:39,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:39,780 INFO L225 Difference]: With dead ends: 143 [2020-10-14 05:22:39,780 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 05:22:39,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2020-10-14 05:22:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 05:22:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2020-10-14 05:22:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 05:22:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2020-10-14 05:22:39,785 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2020-10-14 05:22:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:39,785 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2020-10-14 05:22:39,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-14 05:22:39,786 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2020-10-14 05:22:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 05:22:39,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:39,786 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:39,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 05:22:39,787 INFO L427 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:39,787 INFO L82 PathProgramCache]: Analyzing trace with hash -888843147, now seen corresponding path program 63 times [2020-10-14 05:22:39,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:39,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295757656] [2020-10-14 05:22:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:40,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:40,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 05:22:40,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:40,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-14 05:22:40,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:40,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-14 05:22:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 05:22:40,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:42,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:42,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:42,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:42,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:22:42,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:42,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:42,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295757656] [2020-10-14 05:22:42,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:42,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-14 05:22:42,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544506532] [2020-10-14 05:22:42,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-14 05:22:42,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:42,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-14 05:22:42,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 05:22:42,709 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 66 states. [2020-10-14 05:22:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:42,964 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2020-10-14 05:22:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-14 05:22:42,965 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 136 [2020-10-14 05:22:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:42,966 INFO L225 Difference]: With dead ends: 145 [2020-10-14 05:22:42,966 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 05:22:42,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 05:22:42,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 05:22:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-14 05:22:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 05:22:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2020-10-14 05:22:42,970 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2020-10-14 05:22:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:42,971 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2020-10-14 05:22:42,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-14 05:22:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2020-10-14 05:22:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 05:22:42,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:42,972 INFO L422 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:42,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 05:22:42,973 INFO L427 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1655588659, now seen corresponding path program 64 times [2020-10-14 05:22:42,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:42,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776555458] [2020-10-14 05:22:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:43,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:43,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 05:22:43,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-14 05:22:43,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:43,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-14 05:22:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 05:22:43,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:45,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:45,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:45,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:22:45,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:45,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:45,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776555458] [2020-10-14 05:22:45,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:45,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-14 05:22:45,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122715414] [2020-10-14 05:22:45,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-14 05:22:45,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:45,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-14 05:22:45,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 05:22:45,885 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 67 states. [2020-10-14 05:22:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:46,147 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2020-10-14 05:22:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-14 05:22:46,148 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 138 [2020-10-14 05:22:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:46,149 INFO L225 Difference]: With dead ends: 147 [2020-10-14 05:22:46,149 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 05:22:46,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2020-10-14 05:22:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 05:22:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-14 05:22:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 05:22:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2020-10-14 05:22:46,156 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2020-10-14 05:22:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:46,156 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2020-10-14 05:22:46,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-14 05:22:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2020-10-14 05:22:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 05:22:46,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:46,158 INFO L422 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:46,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 05:22:46,159 INFO L427 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:46,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:46,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1276804495, now seen corresponding path program 65 times [2020-10-14 05:22:46,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:46,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681497576] [2020-10-14 05:22:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:47,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 05:22:47,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:49,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:49,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:49,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:49,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:49,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:49,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:49,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:49,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:22:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:49,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681497576] [2020-10-14 05:22:49,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:49,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-14 05:22:49,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450980401] [2020-10-14 05:22:49,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-14 05:22:49,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:49,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-14 05:22:49,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 05:22:49,404 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 68 states. [2020-10-14 05:22:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:49,661 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2020-10-14 05:22:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-14 05:22:49,662 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 140 [2020-10-14 05:22:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:49,663 INFO L225 Difference]: With dead ends: 149 [2020-10-14 05:22:49,663 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 05:22:49,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2020-10-14 05:22:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 05:22:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2020-10-14 05:22:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 05:22:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2020-10-14 05:22:49,668 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2020-10-14 05:22:49,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:49,669 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2020-10-14 05:22:49,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-14 05:22:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2020-10-14 05:22:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-14 05:22:49,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:49,670 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:49,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 05:22:49,670 INFO L427 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:49,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1808079313, now seen corresponding path program 66 times [2020-10-14 05:22:49,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:49,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493269586] [2020-10-14 05:22:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:50,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:50,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 05:22:50,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-14 05:22:50,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:50,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-14 05:22:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:50,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 05:22:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:52,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:52,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:52,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:52,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:52,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:52,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:52,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:52,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:52,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:52,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493269586] [2020-10-14 05:22:52,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:52,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-14 05:22:52,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843810521] [2020-10-14 05:22:52,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-14 05:22:52,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:52,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-14 05:22:52,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 05:22:52,726 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 69 states. [2020-10-14 05:22:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:52,975 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2020-10-14 05:22:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-14 05:22:52,976 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 142 [2020-10-14 05:22:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:52,977 INFO L225 Difference]: With dead ends: 151 [2020-10-14 05:22:52,977 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 05:22:52,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2020-10-14 05:22:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 05:22:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-10-14 05:22:52,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 05:22:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2020-10-14 05:22:52,981 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2020-10-14 05:22:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:52,981 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2020-10-14 05:22:52,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-14 05:22:52,981 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2020-10-14 05:22:52,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 05:22:52,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:52,982 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:52,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 05:22:52,982 INFO L427 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:52,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1262071187, now seen corresponding path program 67 times [2020-10-14 05:22:52,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:52,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865611338] [2020-10-14 05:22:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:53,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:53,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 05:22:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-14 05:22:53,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:53,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 69 [2020-10-14 05:22:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 05:22:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:56,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:56,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:56,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:56,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:56,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:56,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:56,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:56,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:56,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:56,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865611338] [2020-10-14 05:22:56,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:56,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-14 05:22:56,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188026302] [2020-10-14 05:22:56,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-14 05:22:56,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:56,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-14 05:22:56,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 05:22:56,134 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 70 states. [2020-10-14 05:22:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:22:56,407 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-10-14 05:22:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-14 05:22:56,408 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 144 [2020-10-14 05:22:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:22:56,409 INFO L225 Difference]: With dead ends: 153 [2020-10-14 05:22:56,409 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 05:22:56,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2020-10-14 05:22:56,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 05:22:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2020-10-14 05:22:56,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 05:22:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2020-10-14 05:22:56,413 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2020-10-14 05:22:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:22:56,413 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2020-10-14 05:22:56,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-14 05:22:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2020-10-14 05:22:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 05:22:56,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:22:56,414 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:22:56,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 05:22:56,415 INFO L427 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:22:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:22:56,415 INFO L82 PathProgramCache]: Analyzing trace with hash -534272213, now seen corresponding path program 68 times [2020-10-14 05:22:56,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:22:56,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840576556] [2020-10-14 05:22:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:22:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:57,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:57,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 05:22:57,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-14 05:22:57,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:57,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-14 05:22:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:22:57,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 05:22:57,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:22:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:22:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:22:59,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:22:59,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:22:59,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:22:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:22:59,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:22:59,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:22:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:22:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:22:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:22:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:22:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:22:59,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840576556] [2020-10-14 05:22:59,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:22:59,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-14 05:22:59,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742841371] [2020-10-14 05:22:59,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-14 05:22:59,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:22:59,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-14 05:22:59,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 05:22:59,979 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 71 states. [2020-10-14 05:23:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:00,263 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2020-10-14 05:23:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-14 05:23:00,263 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 146 [2020-10-14 05:23:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:00,264 INFO L225 Difference]: With dead ends: 155 [2020-10-14 05:23:00,264 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 05:23:00,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2020-10-14 05:23:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 05:23:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2020-10-14 05:23:00,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 05:23:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-10-14 05:23:00,269 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2020-10-14 05:23:00,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:00,270 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-10-14 05:23:00,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-14 05:23:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-10-14 05:23:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 05:23:00,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:00,271 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:00,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 05:23:00,272 INFO L427 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1199127447, now seen corresponding path program 69 times [2020-10-14 05:23:00,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:00,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88061682] [2020-10-14 05:23:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:00,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:01,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:01,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 05:23:01,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:01,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-14 05:23:01,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:01,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 71 [2020-10-14 05:23:01,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:01,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 05:23:01,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:03,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:03,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:03,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:03,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:03,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:03,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:03,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:03,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88061682] [2020-10-14 05:23:03,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:03,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-14 05:23:03,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194362462] [2020-10-14 05:23:03,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-14 05:23:03,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:03,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-14 05:23:03,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 05:23:03,740 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 72 states. [2020-10-14 05:23:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:04,012 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2020-10-14 05:23:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-14 05:23:04,013 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 148 [2020-10-14 05:23:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:04,014 INFO L225 Difference]: With dead ends: 157 [2020-10-14 05:23:04,014 INFO L226 Difference]: Without dead ends: 152 [2020-10-14 05:23:04,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2020-10-14 05:23:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-14 05:23:04,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-14 05:23:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 05:23:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2020-10-14 05:23:04,017 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2020-10-14 05:23:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:04,018 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2020-10-14 05:23:04,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-14 05:23:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2020-10-14 05:23:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 05:23:04,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:04,019 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:04,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 05:23:04,019 INFO L427 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash -174880217, now seen corresponding path program 70 times [2020-10-14 05:23:04,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:04,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964748899] [2020-10-14 05:23:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:04,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:04,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:04,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 05:23:04,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-14 05:23:04,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:04,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 72 [2020-10-14 05:23:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:04,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 05:23:04,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:07,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:07,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:07,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:23:07,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:07,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:07,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964748899] [2020-10-14 05:23:07,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:07,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-10-14 05:23:07,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254101203] [2020-10-14 05:23:07,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-14 05:23:07,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:07,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-14 05:23:07,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 05:23:07,582 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 73 states. [2020-10-14 05:23:07,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:07,883 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2020-10-14 05:23:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-14 05:23:07,883 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 150 [2020-10-14 05:23:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:07,885 INFO L225 Difference]: With dead ends: 159 [2020-10-14 05:23:07,885 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 05:23:07,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2020-10-14 05:23:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 05:23:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2020-10-14 05:23:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 05:23:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2020-10-14 05:23:07,890 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2020-10-14 05:23:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:07,890 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2020-10-14 05:23:07,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-14 05:23:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2020-10-14 05:23:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 05:23:07,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:07,892 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:07,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 05:23:07,892 INFO L427 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:07,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:07,892 INFO L82 PathProgramCache]: Analyzing trace with hash 579197029, now seen corresponding path program 71 times [2020-10-14 05:23:07,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:07,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654845427] [2020-10-14 05:23:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:09,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:09,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 05:23:09,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-14 05:23:09,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:09,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-14 05:23:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 05:23:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:11,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:11,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:11,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:11,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:11,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:11,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:11,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654845427] [2020-10-14 05:23:11,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:11,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-14 05:23:11,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929613946] [2020-10-14 05:23:11,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-14 05:23:11,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:11,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-14 05:23:11,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 05:23:11,978 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 74 states. [2020-10-14 05:23:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:12,239 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2020-10-14 05:23:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-14 05:23:12,239 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 152 [2020-10-14 05:23:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:12,240 INFO L225 Difference]: With dead ends: 161 [2020-10-14 05:23:12,240 INFO L226 Difference]: Without dead ends: 156 [2020-10-14 05:23:12,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2020-10-14 05:23:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-14 05:23:12,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2020-10-14 05:23:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 05:23:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2020-10-14 05:23:12,244 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2020-10-14 05:23:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:12,245 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2020-10-14 05:23:12,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-14 05:23:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2020-10-14 05:23:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 05:23:12,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:12,246 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:12,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 05:23:12,246 INFO L427 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:12,246 INFO L82 PathProgramCache]: Analyzing trace with hash -602042589, now seen corresponding path program 72 times [2020-10-14 05:23:12,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:12,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890159791] [2020-10-14 05:23:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:12,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:13,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:13,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-14 05:23:13,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-14 05:23:13,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:13,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-14 05:23:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:13,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 05:23:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:16,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:16,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:16,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:16,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:16,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:16,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:16,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:16,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890159791] [2020-10-14 05:23:16,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:16,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-10-14 05:23:16,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529321589] [2020-10-14 05:23:16,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-14 05:23:16,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:16,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-14 05:23:16,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 05:23:16,026 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 75 states. [2020-10-14 05:23:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:16,330 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2020-10-14 05:23:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-14 05:23:16,331 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 154 [2020-10-14 05:23:16,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:16,332 INFO L225 Difference]: With dead ends: 163 [2020-10-14 05:23:16,332 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 05:23:16,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2020-10-14 05:23:16,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 05:23:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-10-14 05:23:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 05:23:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2020-10-14 05:23:16,336 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2020-10-14 05:23:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:16,336 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2020-10-14 05:23:16,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-14 05:23:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2020-10-14 05:23:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-14 05:23:16,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:16,337 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:16,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 05:23:16,338 INFO L427 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:16,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:16,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1901949343, now seen corresponding path program 73 times [2020-10-14 05:23:16,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:16,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296857085] [2020-10-14 05:23:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:17,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:17,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 05:23:17,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:17,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-14 05:23:17,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:17,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 75 [2020-10-14 05:23:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:17,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 05:23:17,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:20,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:20,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:20,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:20,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:20,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:20,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:20,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296857085] [2020-10-14 05:23:20,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:20,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-14 05:23:20,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950388807] [2020-10-14 05:23:20,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-14 05:23:20,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:20,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-14 05:23:20,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-10-14 05:23:20,189 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 76 states. [2020-10-14 05:23:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:20,492 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2020-10-14 05:23:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-14 05:23:20,493 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 156 [2020-10-14 05:23:20,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:20,494 INFO L225 Difference]: With dead ends: 165 [2020-10-14 05:23:20,494 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 05:23:20,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2020-10-14 05:23:20,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 05:23:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2020-10-14 05:23:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 05:23:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2020-10-14 05:23:20,499 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2020-10-14 05:23:20,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:20,499 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2020-10-14 05:23:20,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-14 05:23:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2020-10-14 05:23:20,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 05:23:20,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:20,500 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:20,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 05:23:20,500 INFO L427 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:20,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1276856801, now seen corresponding path program 74 times [2020-10-14 05:23:20,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:20,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078498478] [2020-10-14 05:23:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:21,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:21,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 05:23:21,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 812 [2020-10-14 05:23:21,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:21,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-14 05:23:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 05:23:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:24,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:24,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:24,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:24,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:24,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:24,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:24,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:24,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:24,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:24,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:24,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:24,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078498478] [2020-10-14 05:23:24,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:24,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-10-14 05:23:24,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781906893] [2020-10-14 05:23:24,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-10-14 05:23:24,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:24,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-10-14 05:23:24,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 05:23:24,501 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 77 states. [2020-10-14 05:23:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:24,796 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2020-10-14 05:23:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-14 05:23:24,796 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 158 [2020-10-14 05:23:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:24,797 INFO L225 Difference]: With dead ends: 167 [2020-10-14 05:23:24,797 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 05:23:24,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2020-10-14 05:23:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 05:23:24,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-14 05:23:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-14 05:23:24,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2020-10-14 05:23:24,802 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2020-10-14 05:23:24,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:24,802 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2020-10-14 05:23:24,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-10-14 05:23:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2020-10-14 05:23:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-14 05:23:24,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:24,803 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:24,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-14 05:23:24,803 INFO L427 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:24,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1858345379, now seen corresponding path program 75 times [2020-10-14 05:23:24,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:24,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709891608] [2020-10-14 05:23:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:25,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:25,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 05:23:25,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-10-14 05:23:25,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:25,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 77 [2020-10-14 05:23:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:25,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 05:23:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:28,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:28,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:28,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:28,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:28,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:28,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709891608] [2020-10-14 05:23:28,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:28,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-14 05:23:28,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274008668] [2020-10-14 05:23:28,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-14 05:23:28,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:28,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-14 05:23:28,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-10-14 05:23:28,938 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 78 states. [2020-10-14 05:23:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:29,263 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2020-10-14 05:23:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-14 05:23:29,264 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 160 [2020-10-14 05:23:29,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:29,264 INFO L225 Difference]: With dead ends: 169 [2020-10-14 05:23:29,265 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 05:23:29,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2020-10-14 05:23:29,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 05:23:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2020-10-14 05:23:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-14 05:23:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2020-10-14 05:23:29,269 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2020-10-14 05:23:29,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:29,269 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2020-10-14 05:23:29,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-14 05:23:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2020-10-14 05:23:29,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 05:23:29,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:29,270 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:29,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-14 05:23:29,270 INFO L427 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1971846939, now seen corresponding path program 76 times [2020-10-14 05:23:29,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:29,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025406884] [2020-10-14 05:23:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:29,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:30,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:30,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 05:23:30,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:30,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 869 [2020-10-14 05:23:30,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:30,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 78 [2020-10-14 05:23:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 05:23:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:33,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:33,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:33,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:33,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:33,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:33,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025406884] [2020-10-14 05:23:33,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:33,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-10-14 05:23:33,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196119172] [2020-10-14 05:23:33,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-10-14 05:23:33,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:33,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-10-14 05:23:33,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 05:23:33,550 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 79 states. [2020-10-14 05:23:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:33,852 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2020-10-14 05:23:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-14 05:23:33,858 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 162 [2020-10-14 05:23:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:33,859 INFO L225 Difference]: With dead ends: 171 [2020-10-14 05:23:33,859 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 05:23:33,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2020-10-14 05:23:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 05:23:33,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2020-10-14 05:23:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 05:23:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2020-10-14 05:23:33,863 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2020-10-14 05:23:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:33,864 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2020-10-14 05:23:33,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-10-14 05:23:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2020-10-14 05:23:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-14 05:23:33,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:33,865 INFO L422 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:33,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-10-14 05:23:33,865 INFO L427 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:33,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1999691865, now seen corresponding path program 77 times [2020-10-14 05:23:33,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:33,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447192062] [2020-10-14 05:23:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:35,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:35,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 05:23:35,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:35,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231 [2020-10-14 05:23:35,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:35,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 79 [2020-10-14 05:23:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:35,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 05:23:35,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:38,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:38,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:38,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:38,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:38,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:38,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:38,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:38,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447192062] [2020-10-14 05:23:38,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:38,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-10-14 05:23:38,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683904475] [2020-10-14 05:23:38,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-10-14 05:23:38,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:38,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-10-14 05:23:38,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-10-14 05:23:38,597 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 80 states. [2020-10-14 05:23:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:38,871 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2020-10-14 05:23:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-14 05:23:38,872 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 164 [2020-10-14 05:23:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:38,873 INFO L225 Difference]: With dead ends: 173 [2020-10-14 05:23:38,873 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 05:23:38,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2020-10-14 05:23:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 05:23:38,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-10-14 05:23:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-14 05:23:38,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-10-14 05:23:38,878 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2020-10-14 05:23:38,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:38,879 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-10-14 05:23:38,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-10-14 05:23:38,879 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-10-14 05:23:38,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 05:23:38,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:38,880 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:38,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-10-14 05:23:38,880 INFO L427 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:38,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:38,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1306105321, now seen corresponding path program 78 times [2020-10-14 05:23:38,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:38,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029130448] [2020-10-14 05:23:38,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:39,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:39,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-14 05:23:39,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 887 [2020-10-14 05:23:39,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:39,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 80 [2020-10-14 05:23:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 05:23:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:43,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:43,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:43,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:43,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:23:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:43,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029130448] [2020-10-14 05:23:43,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:43,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2020-10-14 05:23:43,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462802153] [2020-10-14 05:23:43,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-10-14 05:23:43,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:43,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-10-14 05:23:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-10-14 05:23:43,372 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 81 states. [2020-10-14 05:23:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:43,711 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2020-10-14 05:23:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-10-14 05:23:43,711 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 166 [2020-10-14 05:23:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:43,712 INFO L225 Difference]: With dead ends: 175 [2020-10-14 05:23:43,712 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 05:23:43,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2020-10-14 05:23:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 05:23:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2020-10-14 05:23:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 05:23:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2020-10-14 05:23:43,717 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2020-10-14 05:23:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:43,717 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2020-10-14 05:23:43,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-10-14 05:23:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2020-10-14 05:23:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 05:23:43,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:43,718 INFO L422 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:43,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-10-14 05:23:43,719 INFO L427 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:43,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:43,719 INFO L82 PathProgramCache]: Analyzing trace with hash 98597973, now seen corresponding path program 79 times [2020-10-14 05:23:43,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:43,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415167564] [2020-10-14 05:23:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:43,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:44,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:44,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 05:23:44,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:44,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-10-14 05:23:44,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:44,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 81 [2020-10-14 05:23:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:44,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 05:23:44,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:48,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:48,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:48,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:48,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:48,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:48,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:48,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:48,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:48,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415167564] [2020-10-14 05:23:48,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:48,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-10-14 05:23:48,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691394065] [2020-10-14 05:23:48,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-10-14 05:23:48,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:48,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-10-14 05:23:48,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-10-14 05:23:48,383 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 82 states. [2020-10-14 05:23:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:48,695 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2020-10-14 05:23:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2020-10-14 05:23:48,695 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 168 [2020-10-14 05:23:48,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:48,696 INFO L225 Difference]: With dead ends: 177 [2020-10-14 05:23:48,696 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 05:23:48,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2020-10-14 05:23:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 05:23:48,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2020-10-14 05:23:48,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 05:23:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2020-10-14 05:23:48,701 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2020-10-14 05:23:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:48,701 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2020-10-14 05:23:48,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-10-14 05:23:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2020-10-14 05:23:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 05:23:48,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:48,703 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:48,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-10-14 05:23:48,703 INFO L427 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:48,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1398732563, now seen corresponding path program 80 times [2020-10-14 05:23:48,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:48,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957388542] [2020-10-14 05:23:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:48,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:49,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:49,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-14 05:23:49,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-14 05:23:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:49,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 82 [2020-10-14 05:23:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-14 05:23:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:53,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:53,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:53,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:53,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:53,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:53,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:53,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:53,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:53,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957388542] [2020-10-14 05:23:53,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:53,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2020-10-14 05:23:53,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807724520] [2020-10-14 05:23:53,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-10-14 05:23:53,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:53,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-10-14 05:23:53,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-10-14 05:23:53,477 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 83 states. [2020-10-14 05:23:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:53,776 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2020-10-14 05:23:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-10-14 05:23:53,777 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 170 [2020-10-14 05:23:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:53,778 INFO L225 Difference]: With dead ends: 179 [2020-10-14 05:23:53,778 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 05:23:53,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2020-10-14 05:23:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 05:23:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2020-10-14 05:23:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 05:23:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2020-10-14 05:23:53,783 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2020-10-14 05:23:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:53,783 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2020-10-14 05:23:53,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-10-14 05:23:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2020-10-14 05:23:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 05:23:53,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:53,784 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:53,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-10-14 05:23:53,784 INFO L427 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:53,785 INFO L82 PathProgramCache]: Analyzing trace with hash 992590417, now seen corresponding path program 81 times [2020-10-14 05:23:53,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:53,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952714483] [2020-10-14 05:23:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:53,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:54,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:54,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 05:23:54,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1133 [2020-10-14 05:23:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:54,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:54,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 83 [2020-10-14 05:23:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:23:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 05:23:54,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:58,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:23:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:23:58,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:23:58,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:23:58,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:23:58,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:23:58,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:23:58,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:23:58,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:23:58,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:23:58,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:23:58,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:23:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:23:58,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952714483] [2020-10-14 05:23:58,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:23:58,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-10-14 05:23:58,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815606628] [2020-10-14 05:23:58,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-10-14 05:23:58,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:23:58,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-10-14 05:23:58,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-10-14 05:23:58,847 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 84 states. [2020-10-14 05:23:59,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:23:59,202 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2020-10-14 05:23:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-14 05:23:59,202 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 172 [2020-10-14 05:23:59,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:23:59,204 INFO L225 Difference]: With dead ends: 181 [2020-10-14 05:23:59,204 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 05:23:59,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2020-10-14 05:23:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 05:23:59,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2020-10-14 05:23:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-14 05:23:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2020-10-14 05:23:59,208 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2020-10-14 05:23:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:23:59,208 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2020-10-14 05:23:59,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-10-14 05:23:59,209 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2020-10-14 05:23:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 05:23:59,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:23:59,210 INFO L422 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:23:59,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-10-14 05:23:59,210 INFO L427 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:23:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:23:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1532012047, now seen corresponding path program 82 times [2020-10-14 05:23:59,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:23:59,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165423579] [2020-10-14 05:23:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:23:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:23:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:00,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-14 05:24:00,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:00,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-14 05:24:00,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:00,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 84 [2020-10-14 05:24:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 05:24:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:04,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:04,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:04,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:04,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:04,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:04,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:04,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:04,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:04,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165423579] [2020-10-14 05:24:04,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:04,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85] total 85 [2020-10-14 05:24:04,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634368650] [2020-10-14 05:24:04,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-10-14 05:24:04,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:04,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-10-14 05:24:04,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-10-14 05:24:04,294 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 85 states. [2020-10-14 05:24:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:04,676 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2020-10-14 05:24:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-14 05:24:04,676 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 174 [2020-10-14 05:24:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:04,678 INFO L225 Difference]: With dead ends: 183 [2020-10-14 05:24:04,678 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 05:24:04,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2020-10-14 05:24:04,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 05:24:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2020-10-14 05:24:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 05:24:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2020-10-14 05:24:04,682 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2020-10-14 05:24:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:04,682 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2020-10-14 05:24:04,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-10-14 05:24:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2020-10-14 05:24:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-14 05:24:04,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:04,684 INFO L422 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:04,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-10-14 05:24:04,684 INFO L427 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:04,684 INFO L82 PathProgramCache]: Analyzing trace with hash 225155661, now seen corresponding path program 83 times [2020-10-14 05:24:04,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:04,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736942549] [2020-10-14 05:24:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:04,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:05,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:05,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 05:24:05,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-14 05:24:05,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:05,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 85 [2020-10-14 05:24:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 05:24:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:09,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:09,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:09,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:09,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:09,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:09,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:09,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:09,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736942549] [2020-10-14 05:24:09,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:09,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-10-14 05:24:09,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719401506] [2020-10-14 05:24:09,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-10-14 05:24:09,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:09,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-10-14 05:24:09,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-10-14 05:24:09,913 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 86 states. [2020-10-14 05:24:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:10,292 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2020-10-14 05:24:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-10-14 05:24:10,292 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 176 [2020-10-14 05:24:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:10,293 INFO L225 Difference]: With dead ends: 185 [2020-10-14 05:24:10,293 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 05:24:10,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2020-10-14 05:24:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 05:24:10,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2020-10-14 05:24:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-14 05:24:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2020-10-14 05:24:10,297 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2020-10-14 05:24:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:10,297 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2020-10-14 05:24:10,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-10-14 05:24:10,297 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2020-10-14 05:24:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 05:24:10,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:10,298 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:10,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-10-14 05:24:10,298 INFO L427 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:10,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:10,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1533380853, now seen corresponding path program 84 times [2020-10-14 05:24:10,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:10,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617730685] [2020-10-14 05:24:10,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:10,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:11,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:11,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 05:24:11,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:11,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-14 05:24:11,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:11,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 86 [2020-10-14 05:24:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:11,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 05:24:11,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:15,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:15,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:15,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:15,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:15,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:15,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:15,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:15,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:15,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:15,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:15,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:15,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:15,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617730685] [2020-10-14 05:24:15,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:15,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87] total 87 [2020-10-14 05:24:15,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870010403] [2020-10-14 05:24:15,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-10-14 05:24:15,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:15,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-10-14 05:24:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-10-14 05:24:15,667 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 87 states. [2020-10-14 05:24:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:16,055 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2020-10-14 05:24:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-10-14 05:24:16,056 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 178 [2020-10-14 05:24:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:16,057 INFO L225 Difference]: With dead ends: 187 [2020-10-14 05:24:16,057 INFO L226 Difference]: Without dead ends: 182 [2020-10-14 05:24:16,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2020-10-14 05:24:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-14 05:24:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2020-10-14 05:24:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 05:24:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2020-10-14 05:24:16,061 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2020-10-14 05:24:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:16,062 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2020-10-14 05:24:16,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-10-14 05:24:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2020-10-14 05:24:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 05:24:16,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:16,063 INFO L422 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:16,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2020-10-14 05:24:16,063 INFO L427 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash 730143817, now seen corresponding path program 85 times [2020-10-14 05:24:16,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:16,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000274591] [2020-10-14 05:24:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:17,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:17,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 05:24:17,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-14 05:24:17,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:17,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 87 [2020-10-14 05:24:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:17,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 05:24:17,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:21,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:21,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:21,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:21,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:21,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:21,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000274591] [2020-10-14 05:24:21,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:21,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-14 05:24:21,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732126345] [2020-10-14 05:24:21,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-14 05:24:21,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:21,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-14 05:24:21,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-10-14 05:24:21,573 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 88 states. [2020-10-14 05:24:21,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:21,976 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2020-10-14 05:24:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2020-10-14 05:24:21,977 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 180 [2020-10-14 05:24:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:21,978 INFO L225 Difference]: With dead ends: 189 [2020-10-14 05:24:21,978 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 05:24:21,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2020-10-14 05:24:21,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 05:24:21,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2020-10-14 05:24:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 05:24:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2020-10-14 05:24:21,983 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2020-10-14 05:24:21,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:21,983 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2020-10-14 05:24:21,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-14 05:24:21,983 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2020-10-14 05:24:21,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 05:24:21,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:21,984 INFO L422 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:21,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2020-10-14 05:24:21,985 INFO L427 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:21,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:21,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1571067385, now seen corresponding path program 86 times [2020-10-14 05:24:21,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:21,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264698103] [2020-10-14 05:24:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:23,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:23,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-14 05:24:23,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1137 [2020-10-14 05:24:23,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:23,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-14 05:24:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-14 05:24:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:27,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:27,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:27,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:27,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:27,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:27,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264698103] [2020-10-14 05:24:27,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:27,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89] total 89 [2020-10-14 05:24:27,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401406216] [2020-10-14 05:24:27,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-10-14 05:24:27,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:27,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-10-14 05:24:27,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-10-14 05:24:27,721 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 89 states. [2020-10-14 05:24:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:28,106 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2020-10-14 05:24:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-10-14 05:24:28,106 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 182 [2020-10-14 05:24:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:28,107 INFO L225 Difference]: With dead ends: 191 [2020-10-14 05:24:28,107 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 05:24:28,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2020-10-14 05:24:28,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 05:24:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2020-10-14 05:24:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-14 05:24:28,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-10-14 05:24:28,111 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2020-10-14 05:24:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:28,111 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-10-14 05:24:28,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-10-14 05:24:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-10-14 05:24:28,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 05:24:28,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:28,112 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:28,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2020-10-14 05:24:28,113 INFO L427 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:28,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:28,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1126875067, now seen corresponding path program 87 times [2020-10-14 05:24:28,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:28,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737680568] [2020-10-14 05:24:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:29,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 89 [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 05:24:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:34,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:34,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:34,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:34,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:34,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:34,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:34,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:34,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:34,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737680568] [2020-10-14 05:24:34,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:34,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90] total 90 [2020-10-14 05:24:34,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751237722] [2020-10-14 05:24:34,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2020-10-14 05:24:34,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2020-10-14 05:24:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-10-14 05:24:34,040 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 90 states. [2020-10-14 05:24:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:34,441 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2020-10-14 05:24:34,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-10-14 05:24:34,442 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 184 [2020-10-14 05:24:34,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:34,443 INFO L225 Difference]: With dead ends: 193 [2020-10-14 05:24:34,443 INFO L226 Difference]: Without dead ends: 188 [2020-10-14 05:24:34,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2020-10-14 05:24:34,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-14 05:24:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2020-10-14 05:24:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-14 05:24:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2020-10-14 05:24:34,447 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2020-10-14 05:24:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:34,447 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2020-10-14 05:24:34,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 90 states. [2020-10-14 05:24:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2020-10-14 05:24:34,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-14 05:24:34,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:34,449 INFO L422 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:34,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2020-10-14 05:24:34,449 INFO L427 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:34,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:34,449 INFO L82 PathProgramCache]: Analyzing trace with hash 540180227, now seen corresponding path program 88 times [2020-10-14 05:24:34,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:34,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614553114] [2020-10-14 05:24:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:34,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:35,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:35,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 05:24:35,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:35,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-14 05:24:35,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:35,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 90 [2020-10-14 05:24:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:35,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-14 05:24:35,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:40,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:40,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:40,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:40,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:40,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:40,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:40,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:40,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614553114] [2020-10-14 05:24:40,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:40,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91] total 91 [2020-10-14 05:24:40,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083460756] [2020-10-14 05:24:40,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-10-14 05:24:40,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:40,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-10-14 05:24:40,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-10-14 05:24:40,480 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 91 states. [2020-10-14 05:24:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:40,840 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2020-10-14 05:24:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-10-14 05:24:40,841 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 186 [2020-10-14 05:24:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:40,842 INFO L225 Difference]: With dead ends: 195 [2020-10-14 05:24:40,842 INFO L226 Difference]: Without dead ends: 190 [2020-10-14 05:24:40,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2020-10-14 05:24:40,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-14 05:24:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2020-10-14 05:24:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 05:24:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2020-10-14 05:24:40,846 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2020-10-14 05:24:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:40,846 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2020-10-14 05:24:40,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-10-14 05:24:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2020-10-14 05:24:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 05:24:40,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:40,847 INFO L422 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:40,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2020-10-14 05:24:40,847 INFO L427 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:40,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash 557516353, now seen corresponding path program 89 times [2020-10-14 05:24:40,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:40,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424065039] [2020-10-14 05:24:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:40,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:42,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:42,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 05:24:42,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:42,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-10-14 05:24:42,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:42,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 91 [2020-10-14 05:24:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 05:24:42,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:47,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:47,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:47,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:47,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:47,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:47,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424065039] [2020-10-14 05:24:47,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:47,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2020-10-14 05:24:47,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219566720] [2020-10-14 05:24:47,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2020-10-14 05:24:47,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:47,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2020-10-14 05:24:47,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-10-14 05:24:47,073 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 92 states. [2020-10-14 05:24:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:47,451 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2020-10-14 05:24:47,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-10-14 05:24:47,451 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 188 [2020-10-14 05:24:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:47,452 INFO L225 Difference]: With dead ends: 197 [2020-10-14 05:24:47,452 INFO L226 Difference]: Without dead ends: 192 [2020-10-14 05:24:47,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2020-10-14 05:24:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-14 05:24:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2020-10-14 05:24:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-14 05:24:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2020-10-14 05:24:47,456 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2020-10-14 05:24:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:47,457 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2020-10-14 05:24:47,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 92 states. [2020-10-14 05:24:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2020-10-14 05:24:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 05:24:47,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:47,458 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:47,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2020-10-14 05:24:47,458 INFO L427 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:47,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:47,459 INFO L82 PathProgramCache]: Analyzing trace with hash 37664255, now seen corresponding path program 90 times [2020-10-14 05:24:47,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:47,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626018472] [2020-10-14 05:24:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:48,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:48,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 05:24:48,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-10-14 05:24:48,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:48,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 92 [2020-10-14 05:24:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 05:24:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:24:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:53,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:53,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:24:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:24:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:24:53,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626018472] [2020-10-14 05:24:53,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:24:53,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93] total 93 [2020-10-14 05:24:53,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478333287] [2020-10-14 05:24:53,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-10-14 05:24:53,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:24:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-10-14 05:24:53,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2020-10-14 05:24:53,863 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 93 states. [2020-10-14 05:24:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:24:54,309 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2020-10-14 05:24:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-10-14 05:24:54,309 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 190 [2020-10-14 05:24:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:24:54,310 INFO L225 Difference]: With dead ends: 199 [2020-10-14 05:24:54,310 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 05:24:54,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2020-10-14 05:24:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 05:24:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2020-10-14 05:24:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-14 05:24:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2020-10-14 05:24:54,315 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2020-10-14 05:24:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:24:54,315 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2020-10-14 05:24:54,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-10-14 05:24:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2020-10-14 05:24:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 05:24:54,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:24:54,317 INFO L422 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:24:54,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2020-10-14 05:24:54,317 INFO L427 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:24:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:24:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1323995587, now seen corresponding path program 91 times [2020-10-14 05:24:54,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:24:54,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434113102] [2020-10-14 05:24:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:24:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:24:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:24:55,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:24:55,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 05:24:55,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:24:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-14 05:24:55,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:24:55,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:24:55,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 93 [2020-10-14 05:24:55,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:24:55,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 05:24:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:25:00,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:25:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:25:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:25:00,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:25:00,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:25:00,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:25:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:25:00,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:25:00,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:25:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:25:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:25:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:25:00,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:25:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:25:00,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434113102] [2020-10-14 05:25:00,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:25:00,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2020-10-14 05:25:00,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994235142] [2020-10-14 05:25:00,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2020-10-14 05:25:00,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:25:00,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2020-10-14 05:25:00,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2020-10-14 05:25:00,902 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 94 states. [2020-10-14 05:25:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:25:01,279 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2020-10-14 05:25:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2020-10-14 05:25:01,280 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 192 [2020-10-14 05:25:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:25:01,281 INFO L225 Difference]: With dead ends: 201 [2020-10-14 05:25:01,282 INFO L226 Difference]: Without dead ends: 196 [2020-10-14 05:25:01,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2020-10-14 05:25:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-14 05:25:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2020-10-14 05:25:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-14 05:25:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2020-10-14 05:25:01,285 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2020-10-14 05:25:01,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:25:01,285 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2020-10-14 05:25:01,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 94 states. [2020-10-14 05:25:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2020-10-14 05:25:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 05:25:01,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:25:01,286 INFO L422 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:25:01,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2020-10-14 05:25:01,287 INFO L427 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:25:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:25:01,287 INFO L82 PathProgramCache]: Analyzing trace with hash 85921531, now seen corresponding path program 92 times [2020-10-14 05:25:01,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:25:01,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336174349] [2020-10-14 05:25:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:25:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:25:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:25:02,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:25:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 05:25:02,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:25:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-14 05:25:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:25:02,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:25:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 94 [2020-10-14 05:25:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:25:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 05:25:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:25:08,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:25:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:25:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:25:08,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:25:08,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:25:08,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:25:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:25:08,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:25:08,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:25:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:25:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:25:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:25:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:25:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:25:08,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336174349] [2020-10-14 05:25:08,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:25:08,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95] total 95 [2020-10-14 05:25:08,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455703816] [2020-10-14 05:25:08,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-10-14 05:25:08,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:25:08,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-10-14 05:25:08,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2020-10-14 05:25:08,334 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 95 states. [2020-10-14 05:25:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:25:08,740 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2020-10-14 05:25:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-10-14 05:25:08,741 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 194 [2020-10-14 05:25:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:25:08,742 INFO L225 Difference]: With dead ends: 203 [2020-10-14 05:25:08,742 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 05:25:08,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2020-10-14 05:25:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 05:25:08,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2020-10-14 05:25:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 05:25:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2020-10-14 05:25:08,745 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2020-10-14 05:25:08,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:25:08,745 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2020-10-14 05:25:08,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-10-14 05:25:08,746 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2020-10-14 05:25:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 05:25:08,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:25:08,746 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:25:08,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2020-10-14 05:25:08,747 INFO L427 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:25:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:25:08,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2101573689, now seen corresponding path program 93 times [2020-10-14 05:25:08,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:25:08,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695296962] [2020-10-14 05:25:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:25:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:25:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:25:10,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:25:10,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 05:25:10,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:25:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1435 [2020-10-14 05:25:10,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:25:10,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:25:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 95 [2020-10-14 05:25:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:25:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 05:25:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:25:15,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:25:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:25:15,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:25:15,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:25:15,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:25:15,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:25:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:25:15,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:25:15,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:25:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:25:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:25:15,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:25:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:25:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 8649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:25:15,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695296962] [2020-10-14 05:25:15,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:25:15,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96] total 96 [2020-10-14 05:25:15,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513429411] [2020-10-14 05:25:15,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-10-14 05:25:15,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:25:15,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-10-14 05:25:15,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2020-10-14 05:25:15,712 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 96 states. [2020-10-14 05:25:16,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:25:16,195 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2020-10-14 05:25:16,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-10-14 05:25:16,195 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 196 [2020-10-14 05:25:16,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:25:16,196 INFO L225 Difference]: With dead ends: 205 [2020-10-14 05:25:16,196 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 05:25:16,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2020-10-14 05:25:16,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 05:25:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2020-10-14 05:25:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-14 05:25:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2020-10-14 05:25:16,201 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2020-10-14 05:25:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:25:16,201 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2020-10-14 05:25:16,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 96 states. [2020-10-14 05:25:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2020-10-14 05:25:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-14 05:25:16,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:25:16,202 INFO L422 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:25:16,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2020-10-14 05:25:16,203 INFO L427 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:25:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:25:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 2113047031, now seen corresponding path program 94 times [2020-10-14 05:25:16,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:25:16,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134098534] [2020-10-14 05:25:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:25:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:25:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:25:17,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:25:17,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 05:25:17,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:25:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-10-14 05:25:17,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:25:17,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:25:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 96 [2020-10-14 05:25:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:25:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 05:25:17,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:25:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:25:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:25:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:25:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:25:23,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:25:23,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:25:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:25:23,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:25:23,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:25:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:25:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:25:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:25:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:25:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:25:23,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134098534] [2020-10-14 05:25:23,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:25:23,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97] total 97 [2020-10-14 05:25:23,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641431747] [2020-10-14 05:25:23,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-10-14 05:25:23,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:25:23,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-10-14 05:25:23,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2020-10-14 05:25:23,389 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 97 states. [2020-10-14 05:25:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:25:23,817 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2020-10-14 05:25:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-10-14 05:25:23,817 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 198 [2020-10-14 05:25:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:25:23,818 INFO L225 Difference]: With dead ends: 207 [2020-10-14 05:25:23,818 INFO L226 Difference]: Without dead ends: 202 [2020-10-14 05:25:23,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2020-10-14 05:25:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-14 05:25:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2020-10-14 05:25:23,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-14 05:25:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2020-10-14 05:25:23,822 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2020-10-14 05:25:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:25:23,823 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2020-10-14 05:25:23,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-10-14 05:25:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2020-10-14 05:25:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 05:25:23,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:25:23,824 INFO L422 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:25:23,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2020-10-14 05:25:23,824 INFO L427 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:25:23,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:25:23,825 INFO L82 PathProgramCache]: Analyzing trace with hash 254026805, now seen corresponding path program 95 times [2020-10-14 05:25:23,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:25:23,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739889509] [2020-10-14 05:25:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:25:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:25:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking...