/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:37:51,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:37:51,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:37:51,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:37:51,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:37:51,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:37:51,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:37:51,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:37:51,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:37:51,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:37:51,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:37:51,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:37:51,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:37:51,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:37:51,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:37:51,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:37:51,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:37:51,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:37:51,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:37:51,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:37:51,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:37:51,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:37:51,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:37:51,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:37:51,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:37:51,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:37:51,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:37:51,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:37:51,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:37:51,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:37:51,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:37:51,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:37:51,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:37:51,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:37:51,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:37:51,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:37:51,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:37:51,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:37:51,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:37:51,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:37:51,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:37:51,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 02:37:51,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:37:51,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:37:51,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:37:51,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:37:51,196 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:37:51,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:37:51,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:37:51,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:37:51,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:37:51,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:37:51,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:37:51,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:37:51,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:37:51,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:37:51,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:37:51,199 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:37:51,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:37:51,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:37:51,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:37:51,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:37:51,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:37:51,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:37:51,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:37:51,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:37:51,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:37:51,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:37:51,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:37:51,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:37:51,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:37:51,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:37:51,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:37:51,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:37:51,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:37:51,548 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:37:51,549 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:37:51,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40.c [2020-10-14 02:37:51,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bc552490/3e2ec7dd5b9e464e9ed6ca4ccb9298ce/FLAG2808dcb44 [2020-10-14 02:37:52,206 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:37:52,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label40.c [2020-10-14 02:37:52,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bc552490/3e2ec7dd5b9e464e9ed6ca4ccb9298ce/FLAG2808dcb44 [2020-10-14 02:37:52,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bc552490/3e2ec7dd5b9e464e9ed6ca4ccb9298ce [2020-10-14 02:37:52,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:37:52,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:37:52,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:37:52,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:37:52,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:37:52,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:37:52" (1/1) ... [2020-10-14 02:37:52,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:52, skipping insertion in model container [2020-10-14 02:37:52,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:37:52" (1/1) ... [2020-10-14 02:37:52,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:37:52,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:37:53,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:37:53,314 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:37:53,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:37:53,545 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:37:53,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53 WrapperNode [2020-10-14 02:37:53,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:37:53,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:37:53,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:37:53,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:37:53,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (1/1) ... [2020-10-14 02:37:53,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (1/1) ... [2020-10-14 02:37:53,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (1/1) ... [2020-10-14 02:37:53,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (1/1) ... [2020-10-14 02:37:53,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (1/1) ... [2020-10-14 02:37:53,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (1/1) ... [2020-10-14 02:37:53,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (1/1) ... [2020-10-14 02:37:53,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:37:53,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:37:53,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:37:53,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:37:53,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:37:53,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:37:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:37:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:37:53,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:37:53,799 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:37:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:37:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:37:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:37:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:37:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:37:53,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:37:56,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:37:56,089 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:37:56,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:37:56 BoogieIcfgContainer [2020-10-14 02:37:56,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:37:56,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:37:56,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:37:56,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:37:56,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:37:52" (1/3) ... [2020-10-14 02:37:56,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f66106a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:37:56, skipping insertion in model container [2020-10-14 02:37:56,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:37:53" (2/3) ... [2020-10-14 02:37:56,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f66106a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:37:56, skipping insertion in model container [2020-10-14 02:37:56,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:37:56" (3/3) ... [2020-10-14 02:37:56,107 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label40.c [2020-10-14 02:37:56,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:37:56,128 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:37:56,144 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:37:56,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:37:56,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:37:56,174 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:37:56,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:37:56,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:37:56,175 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:37:56,175 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:37:56,175 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:37:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 02:37:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 02:37:56,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:37:56,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:37:56,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:37:56,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:37:56,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1611366285, now seen corresponding path program 1 times [2020-10-14 02:37:56,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:37:56,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50685955] [2020-10-14 02:37:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:37:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:56,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:56,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:56,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 02:37:56,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:56,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-14 02:37:56,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:56,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:56,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:37:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:37:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 02:37:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 02:37:57,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:37:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:37:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:37:57,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:37:57,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:37:57,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:37:57,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 02:37:57,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:37:57,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:37:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:37:57,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:37:57,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:37:57,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:37:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:37:57,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50685955] [2020-10-14 02:37:57,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:37:57,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:37:57,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490761728] [2020-10-14 02:37:57,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:37:57,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:37:57,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:37:57,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:37:57,138 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 02:37:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:37:59,807 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-14 02:37:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:37:59,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-14 02:37:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:37:59,854 INFO L225 Difference]: With dead ends: 791 [2020-10-14 02:37:59,854 INFO L226 Difference]: Without dead ends: 434 [2020-10-14 02:37:59,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:37:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-14 02:38:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-14 02:38:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-14 02:38:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-14 02:38:00,034 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 50 [2020-10-14 02:38:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:00,034 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-14 02:38:00,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:38:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-14 02:38:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 02:38:00,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:00,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:00,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:38:00,042 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:00,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1777722578, now seen corresponding path program 1 times [2020-10-14 02:38:00,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:00,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216686597] [2020-10-14 02:38:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:00,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:00,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:01,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:01,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:38:01,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1828 [2020-10-14 02:38:01,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:01,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:38:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 02:38:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:38:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:02,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:02,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:02,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:38:02,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:02,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:02,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:02,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:02,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:02,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:38:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 02:38:02,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:02,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:38:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:38:02,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216686597] [2020-10-14 02:38:02,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:02,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:02,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775273735] [2020-10-14 02:38:02,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:02,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:02,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:02,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:02,221 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 5 states. [2020-10-14 02:38:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:04,496 INFO L93 Difference]: Finished difference Result 1258 states and 1832 transitions. [2020-10-14 02:38:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:04,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-14 02:38:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:04,503 INFO L225 Difference]: With dead ends: 1258 [2020-10-14 02:38:04,503 INFO L226 Difference]: Without dead ends: 834 [2020-10-14 02:38:04,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:38:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-10-14 02:38:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 818. [2020-10-14 02:38:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-10-14 02:38:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1096 transitions. [2020-10-14 02:38:04,567 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1096 transitions. Word has length 122 [2020-10-14 02:38:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:04,571 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1096 transitions. [2020-10-14 02:38:04,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1096 transitions. [2020-10-14 02:38:04,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 02:38:04,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:04,582 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:04,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:38:04,582 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1578152274, now seen corresponding path program 1 times [2020-10-14 02:38:04,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:04,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784550381] [2020-10-14 02:38:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:04,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 02:38:06,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-10-14 02:38:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:06,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:38:06,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 02:38:06,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:06,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:06,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:06,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:06,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:06,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:38:06,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:06,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:06,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:06,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:06,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:06,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:06,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 02:38:06,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:38:06,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:06,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:06,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:38:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:38:06,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784550381] [2020-10-14 02:38:06,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:06,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:06,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187298774] [2020-10-14 02:38:06,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:06,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:06,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:06,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:06,680 INFO L87 Difference]: Start difference. First operand 818 states and 1096 transitions. Second operand 5 states. [2020-10-14 02:38:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:09,246 INFO L93 Difference]: Finished difference Result 2036 states and 2803 transitions. [2020-10-14 02:38:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:09,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-14 02:38:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:09,254 INFO L225 Difference]: With dead ends: 2036 [2020-10-14 02:38:09,254 INFO L226 Difference]: Without dead ends: 1224 [2020-10-14 02:38:09,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:38:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-10-14 02:38:09,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1203. [2020-10-14 02:38:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-10-14 02:38:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1648 transitions. [2020-10-14 02:38:09,298 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1648 transitions. Word has length 124 [2020-10-14 02:38:09,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:09,300 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1648 transitions. [2020-10-14 02:38:09,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1648 transitions. [2020-10-14 02:38:09,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 02:38:09,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:09,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:09,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:38:09,307 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:09,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:09,308 INFO L82 PathProgramCache]: Analyzing trace with hash 462412102, now seen corresponding path program 1 times [2020-10-14 02:38:09,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:09,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044054187] [2020-10-14 02:38:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:09,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:09,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:09,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 02:38:09,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:09,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-14 02:38:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:09,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:38:09,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:38:09,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 02:38:09,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 02:38:09,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:09,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:09,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:09,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:38:09,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:09,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:09,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:09,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:38:09,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:09,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:10,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:38:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:10,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 02:38:10,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:10,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:38:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:10,348 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:38:10,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044054187] [2020-10-14 02:38:10,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:38:10,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:38:10,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888545149] [2020-10-14 02:38:10,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:10,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:10,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:10,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:10,354 INFO L87 Difference]: Start difference. First operand 1203 states and 1648 transitions. Second operand 7 states. [2020-10-14 02:38:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:12,909 INFO L93 Difference]: Finished difference Result 2821 states and 3867 transitions. [2020-10-14 02:38:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:38:12,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-14 02:38:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:12,921 INFO L225 Difference]: With dead ends: 2821 [2020-10-14 02:38:12,921 INFO L226 Difference]: Without dead ends: 1624 [2020-10-14 02:38:12,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:38:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-10-14 02:38:12,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1417. [2020-10-14 02:38:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1417 states. [2020-10-14 02:38:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1909 transitions. [2020-10-14 02:38:12,988 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1909 transitions. Word has length 144 [2020-10-14 02:38:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:12,988 INFO L479 AbstractCegarLoop]: Abstraction has 1417 states and 1909 transitions. [2020-10-14 02:38:12,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:12,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1909 transitions. [2020-10-14 02:38:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 02:38:12,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:12,995 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:12,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:38:12,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:12,996 INFO L82 PathProgramCache]: Analyzing trace with hash -664194654, now seen corresponding path program 1 times [2020-10-14 02:38:12,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:12,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636540112] [2020-10-14 02:38:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:17,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:18,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 02:38:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:38:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 02:38:18,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:18,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:38:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:38:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:18,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:18,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:18,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:18,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:38:18,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:18,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:18,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:18,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:38:18,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:18,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 02:38:18,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:18,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:38:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:38:18,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:38:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:18,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:18,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 02:38:18,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 02:38:18,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:18,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:18,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:38:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:18,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636540112] [2020-10-14 02:38:18,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:18,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:18,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209948052] [2020-10-14 02:38:18,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:18,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:18,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:18,567 INFO L87 Difference]: Start difference. First operand 1417 states and 1909 transitions. Second operand 7 states. [2020-10-14 02:38:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:21,106 INFO L93 Difference]: Finished difference Result 3310 states and 4752 transitions. [2020-10-14 02:38:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:38:21,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-14 02:38:21,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:21,124 INFO L225 Difference]: With dead ends: 3310 [2020-10-14 02:38:21,124 INFO L226 Difference]: Without dead ends: 2087 [2020-10-14 02:38:21,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:38:21,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2020-10-14 02:38:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2019. [2020-10-14 02:38:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-14 02:38:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2666 transitions. [2020-10-14 02:38:21,208 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2666 transitions. Word has length 213 [2020-10-14 02:38:21,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:21,208 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 2666 transitions. [2020-10-14 02:38:21,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2666 transitions. [2020-10-14 02:38:21,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 02:38:21,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:21,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:21,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:38:21,215 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:21,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:21,215 INFO L82 PathProgramCache]: Analyzing trace with hash 150738277, now seen corresponding path program 1 times [2020-10-14 02:38:21,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:21,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699767061] [2020-10-14 02:38:21,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:21,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:23,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:23,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-14 02:38:23,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:23,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2597 [2020-10-14 02:38:23,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:23,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:23,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:23,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:38:23,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:38:23,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:23,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:23,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:23,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:23,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:23,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:38:23,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:23,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:23,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:23,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:23,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:24,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:24,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:24,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:38:24,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 02:38:24,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:24,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:24,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:38:24,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:24,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:38:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:24,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:38:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 02:38:24,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:24,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:38:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:24,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699767061] [2020-10-14 02:38:24,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:24,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:24,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332057231] [2020-10-14 02:38:24,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:24,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:24,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:24,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:24,501 INFO L87 Difference]: Start difference. First operand 2019 states and 2666 transitions. Second operand 7 states. [2020-10-14 02:38:30,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:30,434 INFO L93 Difference]: Finished difference Result 5655 states and 7636 transitions. [2020-10-14 02:38:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:38:30,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-14 02:38:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:30,458 INFO L225 Difference]: With dead ends: 5655 [2020-10-14 02:38:30,458 INFO L226 Difference]: Without dead ends: 3830 [2020-10-14 02:38:30,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:38:30,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2020-10-14 02:38:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3216. [2020-10-14 02:38:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3216 states. [2020-10-14 02:38:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 4072 transitions. [2020-10-14 02:38:30,588 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 4072 transitions. Word has length 216 [2020-10-14 02:38:30,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:30,589 INFO L479 AbstractCegarLoop]: Abstraction has 3216 states and 4072 transitions. [2020-10-14 02:38:30,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 4072 transitions. [2020-10-14 02:38:30,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 02:38:30,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:30,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:30,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:38:30,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:30,597 INFO L82 PathProgramCache]: Analyzing trace with hash -515987456, now seen corresponding path program 1 times [2020-10-14 02:38:30,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:30,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770861965] [2020-10-14 02:38:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:31,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:31,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 02:38:31,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-14 02:38:31,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:31,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:31,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:31,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:38:31,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:38:31,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:32,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:32,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:32,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:32,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:38:32,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:32,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:32,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:32,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:38:32,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:32,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 02:38:32,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:32,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:38:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:38:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:32,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:38:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 02:38:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:32,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:32,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:38:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:32,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770861965] [2020-10-14 02:38:32,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:32,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:32,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898014296] [2020-10-14 02:38:32,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:32,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:32,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:32,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:32,584 INFO L87 Difference]: Start difference. First operand 3216 states and 4072 transitions. Second operand 7 states. [2020-10-14 02:38:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:35,664 INFO L93 Difference]: Finished difference Result 7566 states and 10426 transitions. [2020-10-14 02:38:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:38:35,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-14 02:38:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:35,692 INFO L225 Difference]: With dead ends: 7566 [2020-10-14 02:38:35,692 INFO L226 Difference]: Without dead ends: 4544 [2020-10-14 02:38:35,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:38:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2020-10-14 02:38:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4418. [2020-10-14 02:38:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4418 states. [2020-10-14 02:38:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4418 states to 4418 states and 5564 transitions. [2020-10-14 02:38:35,837 INFO L78 Accepts]: Start accepts. Automaton has 4418 states and 5564 transitions. Word has length 252 [2020-10-14 02:38:35,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:35,838 INFO L479 AbstractCegarLoop]: Abstraction has 4418 states and 5564 transitions. [2020-10-14 02:38:35,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:35,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4418 states and 5564 transitions. [2020-10-14 02:38:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 02:38:35,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:35,846 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:35,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:38:35,846 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:35,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:35,847 INFO L82 PathProgramCache]: Analyzing trace with hash -2134512577, now seen corresponding path program 1 times [2020-10-14 02:38:35,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:35,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780767496] [2020-10-14 02:38:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:37,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:37,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 02:38:37,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:38:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-10-14 02:38:37,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:37,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 02:38:37,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:38:37,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:37,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:37,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:37,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:37,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:37,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:38:37,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:37,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:37,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:37,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:37,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:37,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:37,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:38:37,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:37,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 02:38:37,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:37,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:37,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:38:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:37,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:38:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:37,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:37,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:38:37,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 02:38:37,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:37,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:38:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:38,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780767496] [2020-10-14 02:38:38,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:38,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:38,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480872291] [2020-10-14 02:38:38,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:38,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:38,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:38,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:38,289 INFO L87 Difference]: Start difference. First operand 4418 states and 5564 transitions. Second operand 7 states. [2020-10-14 02:38:41,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:41,539 INFO L93 Difference]: Finished difference Result 10218 states and 12987 transitions. [2020-10-14 02:38:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:38:41,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-14 02:38:41,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:41,567 INFO L225 Difference]: With dead ends: 10218 [2020-10-14 02:38:41,567 INFO L226 Difference]: Without dead ends: 5994 [2020-10-14 02:38:41,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:38:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2020-10-14 02:38:41,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5768. [2020-10-14 02:38:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5768 states. [2020-10-14 02:38:41,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7083 transitions. [2020-10-14 02:38:41,734 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7083 transitions. Word has length 260 [2020-10-14 02:38:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:41,735 INFO L479 AbstractCegarLoop]: Abstraction has 5768 states and 7083 transitions. [2020-10-14 02:38:41,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7083 transitions. [2020-10-14 02:38:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 02:38:41,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:41,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:41,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:38:41,747 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:41,747 INFO L82 PathProgramCache]: Analyzing trace with hash 720348604, now seen corresponding path program 1 times [2020-10-14 02:38:41,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:41,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621760153] [2020-10-14 02:38:41,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:41,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:42,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:43,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:43,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-14 02:38:43,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:43,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1432 [2020-10-14 02:38:43,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:43,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:38:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 02:38:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:43,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:43,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:43,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:43,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:38:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:43,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:43,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:43,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:43,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:38:43,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:43,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 02:38:43,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:43,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:38:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:43,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:38:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:43,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:38:43,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 02:38:43,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:43,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 02:38:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:43,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621760153] [2020-10-14 02:38:43,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:43,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:43,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123996842] [2020-10-14 02:38:43,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:43,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:43,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:43,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:43,840 INFO L87 Difference]: Start difference. First operand 5768 states and 7083 transitions. Second operand 7 states. [2020-10-14 02:38:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:46,969 INFO L93 Difference]: Finished difference Result 12494 states and 16448 transitions. [2020-10-14 02:38:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:38:46,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-14 02:38:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:47,017 INFO L225 Difference]: With dead ends: 12494 [2020-10-14 02:38:47,017 INFO L226 Difference]: Without dead ends: 7110 [2020-10-14 02:38:47,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:38:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7110 states. [2020-10-14 02:38:47,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7110 to 6975. [2020-10-14 02:38:47,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6975 states. [2020-10-14 02:38:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 8740 transitions. [2020-10-14 02:38:47,294 INFO L78 Accepts]: Start accepts. Automaton has 6975 states and 8740 transitions. Word has length 270 [2020-10-14 02:38:47,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:47,294 INFO L479 AbstractCegarLoop]: Abstraction has 6975 states and 8740 transitions. [2020-10-14 02:38:47,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:47,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6975 states and 8740 transitions. [2020-10-14 02:38:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 02:38:47,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:47,302 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:47,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:38:47,303 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:47,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1172071576, now seen corresponding path program 1 times [2020-10-14 02:38:47,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:47,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572637565] [2020-10-14 02:38:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:49,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:49,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 02:38:49,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:49,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2238 [2020-10-14 02:38:49,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:49,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:49,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-14 02:38:49,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 02:38:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:49,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:49,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:49,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:49,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:49,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:38:49,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:49,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:49,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:49,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:49,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:49,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:38:49,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:49,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 02:38:49,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:49,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:49,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:49,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:38:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:49,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:49,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 02:38:49,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:49,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 02:38:49,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:49,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 02:38:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:49,990 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 02:38:49,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572637565] [2020-10-14 02:38:49,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:49,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:49,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564354741] [2020-10-14 02:38:49,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:49,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:49,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:49,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:49,994 INFO L87 Difference]: Start difference. First operand 6975 states and 8740 transitions. Second operand 5 states. [2020-10-14 02:38:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:52,299 INFO L93 Difference]: Finished difference Result 15674 states and 20354 transitions. [2020-10-14 02:38:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:52,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-14 02:38:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:52,331 INFO L225 Difference]: With dead ends: 15674 [2020-10-14 02:38:52,332 INFO L226 Difference]: Without dead ends: 9083 [2020-10-14 02:38:52,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:38:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2020-10-14 02:38:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 8689. [2020-10-14 02:38:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8689 states. [2020-10-14 02:38:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 11158 transitions. [2020-10-14 02:38:52,580 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 11158 transitions. Word has length 272 [2020-10-14 02:38:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:52,581 INFO L479 AbstractCegarLoop]: Abstraction has 8689 states and 11158 transitions. [2020-10-14 02:38:52,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 11158 transitions. [2020-10-14 02:38:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-14 02:38:52,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:52,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:52,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:38:52,590 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:52,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:52,591 INFO L82 PathProgramCache]: Analyzing trace with hash -640452945, now seen corresponding path program 1 times [2020-10-14 02:38:52,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:52,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664855760] [2020-10-14 02:38:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:53,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:53,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 02:38:53,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:53,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-14 02:38:53,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:53,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:38:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:38:53,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:53,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:53,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:53,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:53,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:53,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:38:53,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:53,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:53,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:53,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:53,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:53,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:53,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:38:53,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 02:38:53,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:53,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:38:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:53,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:38:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:53,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:53,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:38:53,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 02:38:53,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:53,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:38:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:38:53,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664855760] [2020-10-14 02:38:53,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:53,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:38:53,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540211510] [2020-10-14 02:38:53,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:38:53,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:53,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:38:53,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:38:53,812 INFO L87 Difference]: Start difference. First operand 8689 states and 11158 transitions. Second operand 7 states. [2020-10-14 02:38:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:57,931 INFO L93 Difference]: Finished difference Result 21672 states and 28088 transitions. [2020-10-14 02:38:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:38:57,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-14 02:38:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:57,972 INFO L225 Difference]: With dead ends: 21672 [2020-10-14 02:38:57,972 INFO L226 Difference]: Without dead ends: 13367 [2020-10-14 02:38:57,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:38:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13367 states. [2020-10-14 02:38:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13367 to 13137. [2020-10-14 02:38:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13137 states. [2020-10-14 02:38:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13137 states to 13137 states and 16426 transitions. [2020-10-14 02:38:58,273 INFO L78 Accepts]: Start accepts. Automaton has 13137 states and 16426 transitions. Word has length 275 [2020-10-14 02:38:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:58,274 INFO L479 AbstractCegarLoop]: Abstraction has 13137 states and 16426 transitions. [2020-10-14 02:38:58,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:38:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 13137 states and 16426 transitions. [2020-10-14 02:38:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-14 02:38:58,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:58,284 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:58,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:38:58,284 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:58,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:58,285 INFO L82 PathProgramCache]: Analyzing trace with hash -564895750, now seen corresponding path program 1 times [2020-10-14 02:38:58,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:58,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347088965] [2020-10-14 02:38:58,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:58,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:59,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:59,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-14 02:38:59,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:38:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-14 02:38:59,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:59,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 02:38:59,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:38:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:59,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:59,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:59,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:59,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:59,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:38:59,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:59,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:59,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:59,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:59,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:59,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:38:59,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:59,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 02:38:59,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:59,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:59,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:59,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 02:38:59,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:38:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:38:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:59,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:59,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:38:59,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 02:38:59,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:59,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:38:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:38:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:00,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347088965] [2020-10-14 02:39:00,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:00,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:00,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180787732] [2020-10-14 02:39:00,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:00,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:00,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:00,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:00,096 INFO L87 Difference]: Start difference. First operand 13137 states and 16426 transitions. Second operand 7 states. [2020-10-14 02:39:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:03,134 INFO L93 Difference]: Finished difference Result 26705 states and 33395 transitions. [2020-10-14 02:39:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:39:03,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-14 02:39:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:03,172 INFO L225 Difference]: With dead ends: 26705 [2020-10-14 02:39:03,173 INFO L226 Difference]: Without dead ends: 13952 [2020-10-14 02:39:03,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13952 states. [2020-10-14 02:39:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13952 to 13722. [2020-10-14 02:39:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13722 states. [2020-10-14 02:39:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13722 states to 13722 states and 17104 transitions. [2020-10-14 02:39:03,500 INFO L78 Accepts]: Start accepts. Automaton has 13722 states and 17104 transitions. Word has length 291 [2020-10-14 02:39:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:03,500 INFO L479 AbstractCegarLoop]: Abstraction has 13722 states and 17104 transitions. [2020-10-14 02:39:03,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 13722 states and 17104 transitions. [2020-10-14 02:39:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-14 02:39:03,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:03,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:03,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 02:39:03,515 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:03,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1358013047, now seen corresponding path program 1 times [2020-10-14 02:39:03,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:03,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462065370] [2020-10-14 02:39:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:03,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:04,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:07,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:08,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4723 [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:39:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:08,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:08,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:08,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:08,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:08,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:39:08,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 02:39:08,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:08,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:39:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:08,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:08,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 02:39:08,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:08,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 02:39:08,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:08,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:08,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:39:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 02:39:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:08,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:08,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 02:39:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 02:39:08,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462065370] [2020-10-14 02:39:08,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:08,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:08,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255164938] [2020-10-14 02:39:08,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:08,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:08,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:08,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:08,715 INFO L87 Difference]: Start difference. First operand 13722 states and 17104 transitions. Second operand 7 states. [2020-10-14 02:39:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:11,804 INFO L93 Difference]: Finished difference Result 29241 states and 38444 transitions. [2020-10-14 02:39:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:39:11,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-14 02:39:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:11,857 INFO L225 Difference]: With dead ends: 29241 [2020-10-14 02:39:11,858 INFO L226 Difference]: Without dead ends: 15903 [2020-10-14 02:39:11,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15903 states. [2020-10-14 02:39:12,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15903 to 15647. [2020-10-14 02:39:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15647 states. [2020-10-14 02:39:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15647 states to 15647 states and 19393 transitions. [2020-10-14 02:39:12,266 INFO L78 Accepts]: Start accepts. Automaton has 15647 states and 19393 transitions. Word has length 321 [2020-10-14 02:39:12,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:12,267 INFO L479 AbstractCegarLoop]: Abstraction has 15647 states and 19393 transitions. [2020-10-14 02:39:12,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:12,267 INFO L276 IsEmpty]: Start isEmpty. Operand 15647 states and 19393 transitions. [2020-10-14 02:39:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 02:39:12,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:12,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:12,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 02:39:12,287 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:12,287 INFO L82 PathProgramCache]: Analyzing trace with hash -723357425, now seen corresponding path program 1 times [2020-10-14 02:39:12,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:12,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853331023] [2020-10-14 02:39:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:14,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:17,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:17,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:17,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-14 02:39:17,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 02:39:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 02:39:17,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:17,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 02:39:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:39:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:17,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:17,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:17,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:17,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:17,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:17,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:17,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:17,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:17,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:17,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:17,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:17,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:17,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:17,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:39:17,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:17,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-14 02:39:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:39:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:17,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:17,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:39:17,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:17,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:39:17,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:17,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:17,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:17,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 02:39:17,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:17,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:17,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-14 02:39:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:17,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:17,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:39:17,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 02:39:17,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:17,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 02:39:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-14 02:39:17,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853331023] [2020-10-14 02:39:17,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:17,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:17,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574252628] [2020-10-14 02:39:17,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:17,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:17,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:17,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:17,785 INFO L87 Difference]: Start difference. First operand 15647 states and 19393 transitions. Second operand 5 states. [2020-10-14 02:39:19,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:19,849 INFO L93 Difference]: Finished difference Result 28741 states and 35926 transitions. [2020-10-14 02:39:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:19,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-14 02:39:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:19,879 INFO L225 Difference]: With dead ends: 28741 [2020-10-14 02:39:19,880 INFO L226 Difference]: Without dead ends: 13288 [2020-10-14 02:39:19,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:39:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13288 states. [2020-10-14 02:39:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13288 to 12117. [2020-10-14 02:39:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12117 states. [2020-10-14 02:39:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12117 states to 12117 states and 14407 transitions. [2020-10-14 02:39:20,097 INFO L78 Accepts]: Start accepts. Automaton has 12117 states and 14407 transitions. Word has length 332 [2020-10-14 02:39:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:20,098 INFO L479 AbstractCegarLoop]: Abstraction has 12117 states and 14407 transitions. [2020-10-14 02:39:20,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:20,098 INFO L276 IsEmpty]: Start isEmpty. Operand 12117 states and 14407 transitions. [2020-10-14 02:39:20,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 02:39:20,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:20,113 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:20,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 02:39:20,113 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:20,113 INFO L82 PathProgramCache]: Analyzing trace with hash -369256698, now seen corresponding path program 1 times [2020-10-14 02:39:20,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:20,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373227494] [2020-10-14 02:39:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:21,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 02:39:21,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:21,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-14 02:39:21,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:21,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:21,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:21,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 02:39:21,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:39:21,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:21,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:21,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:21,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:21,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:21,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:21,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:21,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:21,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:21,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:21,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:39:21,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:21,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 02:39:21,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:21,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:39:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:21,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 02:39:21,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 02:39:21,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:21,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:39:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 02:39:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:21,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:21,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:21,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 02:39:21,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:21,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 306 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 02:39:21,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373227494] [2020-10-14 02:39:21,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:21,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:21,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29809983] [2020-10-14 02:39:21,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:21,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:21,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:21,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:21,829 INFO L87 Difference]: Start difference. First operand 12117 states and 14407 transitions. Second operand 7 states. [2020-10-14 02:39:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:25,412 INFO L93 Difference]: Finished difference Result 25998 states and 31196 transitions. [2020-10-14 02:39:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:25,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-10-14 02:39:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:25,435 INFO L225 Difference]: With dead ends: 25998 [2020-10-14 02:39:25,436 INFO L226 Difference]: Without dead ends: 14265 [2020-10-14 02:39:25,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14265 states. [2020-10-14 02:39:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14265 to 13837. [2020-10-14 02:39:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13837 states. [2020-10-14 02:39:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13837 states to 13837 states and 16354 transitions. [2020-10-14 02:39:25,715 INFO L78 Accepts]: Start accepts. Automaton has 13837 states and 16354 transitions. Word has length 344 [2020-10-14 02:39:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:25,716 INFO L479 AbstractCegarLoop]: Abstraction has 13837 states and 16354 transitions. [2020-10-14 02:39:25,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 13837 states and 16354 transitions. [2020-10-14 02:39:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-14 02:39:25,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:25,730 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:25,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 02:39:25,730 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:25,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:25,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1853162177, now seen corresponding path program 1 times [2020-10-14 02:39:25,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:25,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530953894] [2020-10-14 02:39:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:27,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:27,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 02:39:27,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:27,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-14 02:39:27,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:27,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-14 02:39:27,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:39:27,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:27,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:27,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:27,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:27,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:27,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:27,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:27,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:27,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:39:27,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:27,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:39:27,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:27,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:27,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:27,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:27,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:39:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:27,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:27,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:27,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:39:27,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:27,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 02:39:27,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:27,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:27,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 02:39:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-14 02:39:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:27,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:27,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:27,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:27,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:27,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:39:27,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:27,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 02:39:27,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530953894] [2020-10-14 02:39:27,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:27,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:27,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106236319] [2020-10-14 02:39:27,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:27,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:27,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:27,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:27,491 INFO L87 Difference]: Start difference. First operand 13837 states and 16354 transitions. Second operand 7 states. [2020-10-14 02:39:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:30,995 INFO L93 Difference]: Finished difference Result 27581 states and 32616 transitions. [2020-10-14 02:39:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:31,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-14 02:39:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:31,032 INFO L225 Difference]: With dead ends: 27581 [2020-10-14 02:39:31,032 INFO L226 Difference]: Without dead ends: 13738 [2020-10-14 02:39:31,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:31,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13738 states. [2020-10-14 02:39:31,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13738 to 11745. [2020-10-14 02:39:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11745 states. [2020-10-14 02:39:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11745 states to 11745 states and 13642 transitions. [2020-10-14 02:39:31,261 INFO L78 Accepts]: Start accepts. Automaton has 11745 states and 13642 transitions. Word has length 349 [2020-10-14 02:39:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:31,262 INFO L479 AbstractCegarLoop]: Abstraction has 11745 states and 13642 transitions. [2020-10-14 02:39:31,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:31,262 INFO L276 IsEmpty]: Start isEmpty. Operand 11745 states and 13642 transitions. [2020-10-14 02:39:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 02:39:31,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:31,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:31,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 02:39:31,272 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:31,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1457678574, now seen corresponding path program 1 times [2020-10-14 02:39:31,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:31,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460733049] [2020-10-14 02:39:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:31,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-14 02:39:31,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:31,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 02:39:31,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:31,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-14 02:39:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:39:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:31,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:31,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:31,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:31,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:31,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:31,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:31,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:31,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:31,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:39:31,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:31,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:39:31,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:31,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:31,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:39:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:31,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:32,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:32,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:39:32,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 02:39:32,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:32,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:39:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:32,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:39:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:32,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:32,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:32,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:39:32,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:32,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:32,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 02:39:32,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460733049] [2020-10-14 02:39:32,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:32,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:32,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41928339] [2020-10-14 02:39:32,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:32,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:32,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:32,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:32,356 INFO L87 Difference]: Start difference. First operand 11745 states and 13642 transitions. Second operand 7 states. [2020-10-14 02:39:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:35,336 INFO L93 Difference]: Finished difference Result 23358 states and 27199 transitions. [2020-10-14 02:39:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:35,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-14 02:39:35,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:35,357 INFO L225 Difference]: With dead ends: 23358 [2020-10-14 02:39:35,357 INFO L226 Difference]: Without dead ends: 11997 [2020-10-14 02:39:35,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:39:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11997 states. [2020-10-14 02:39:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11997 to 11935. [2020-10-14 02:39:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11935 states. [2020-10-14 02:39:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11935 states to 11935 states and 13860 transitions. [2020-10-14 02:39:35,587 INFO L78 Accepts]: Start accepts. Automaton has 11935 states and 13860 transitions. Word has length 356 [2020-10-14 02:39:35,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:35,588 INFO L479 AbstractCegarLoop]: Abstraction has 11935 states and 13860 transitions. [2020-10-14 02:39:35,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 11935 states and 13860 transitions. [2020-10-14 02:39:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 02:39:35,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:35,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:35,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 02:39:35,600 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:35,601 INFO L82 PathProgramCache]: Analyzing trace with hash 309264218, now seen corresponding path program 1 times [2020-10-14 02:39:35,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:35,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972610210] [2020-10-14 02:39:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:35,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:36,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:36,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-14 02:39:36,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:36,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-14 02:39:36,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:36,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-14 02:39:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 02:39:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:36,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:36,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:36,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:36,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:36,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:39:36,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:36,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:36,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:36,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:36,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:36,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:39:36,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:36,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:36,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:36,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:36,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:36,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:39:36,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:39:36,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:36,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:36,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 02:39:36,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-14 02:39:36,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972610210] [2020-10-14 02:39:36,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:36,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:36,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746696557] [2020-10-14 02:39:36,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:36,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:36,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:36,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:36,511 INFO L87 Difference]: Start difference. First operand 11935 states and 13860 transitions. Second operand 5 states. [2020-10-14 02:39:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:39,295 INFO L93 Difference]: Finished difference Result 26178 states and 30814 transitions. [2020-10-14 02:39:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:39,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2020-10-14 02:39:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:39,320 INFO L225 Difference]: With dead ends: 26178 [2020-10-14 02:39:39,320 INFO L226 Difference]: Without dead ends: 14627 [2020-10-14 02:39:39,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:39:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14627 states. [2020-10-14 02:39:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14627 to 14582. [2020-10-14 02:39:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14582 states. [2020-10-14 02:39:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14582 states to 14582 states and 17053 transitions. [2020-10-14 02:39:39,568 INFO L78 Accepts]: Start accepts. Automaton has 14582 states and 17053 transitions. Word has length 356 [2020-10-14 02:39:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:39,568 INFO L479 AbstractCegarLoop]: Abstraction has 14582 states and 17053 transitions. [2020-10-14 02:39:39,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 14582 states and 17053 transitions. [2020-10-14 02:39:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-14 02:39:39,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:39,580 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:39,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 02:39:39,581 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash -965783877, now seen corresponding path program 1 times [2020-10-14 02:39:39,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:39,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350387324] [2020-10-14 02:39:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:39,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:39,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-14 02:39:40,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:40,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 02:39:40,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:39:40,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:40,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:40,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:40,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:40,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:39:40,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:40,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:40,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:40,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:40,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:40,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:39:40,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:39:40,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:40,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:39:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:40,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:40,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 02:39:40,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 02:39:40,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:40,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:40,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:39:40,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:40,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 02:39:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:40,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:40,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:40,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:39:40,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:40,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:40,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 02:39:41,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350387324] [2020-10-14 02:39:41,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:41,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:41,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565964806] [2020-10-14 02:39:41,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:41,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:41,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:41,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:41,350 INFO L87 Difference]: Start difference. First operand 14582 states and 17053 transitions. Second operand 7 states. [2020-10-14 02:39:44,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:44,813 INFO L93 Difference]: Finished difference Result 29407 states and 34523 transitions. [2020-10-14 02:39:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:39:44,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-14 02:39:44,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:44,837 INFO L225 Difference]: With dead ends: 29407 [2020-10-14 02:39:44,837 INFO L226 Difference]: Without dead ends: 14635 [2020-10-14 02:39:44,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14635 states. [2020-10-14 02:39:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14635 to 14578. [2020-10-14 02:39:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14578 states. [2020-10-14 02:39:45,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14578 states to 14578 states and 16741 transitions. [2020-10-14 02:39:45,087 INFO L78 Accepts]: Start accepts. Automaton has 14578 states and 16741 transitions. Word has length 371 [2020-10-14 02:39:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:45,088 INFO L479 AbstractCegarLoop]: Abstraction has 14578 states and 16741 transitions. [2020-10-14 02:39:45,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 14578 states and 16741 transitions. [2020-10-14 02:39:45,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-14 02:39:45,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:45,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:45,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 02:39:45,102 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:45,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:45,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1804633473, now seen corresponding path program 1 times [2020-10-14 02:39:45,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:45,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717221041] [2020-10-14 02:39:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:46,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:47,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:47,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-14 02:39:47,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:39:47,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2621 [2020-10-14 02:39:47,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:47,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:47,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:47,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:39:47,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 02:39:47,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:47,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:47,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:47,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:47,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:39:47,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:47,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:47,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:47,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:47,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:47,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:47,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 02:39:47,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:47,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:47,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:48,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:48,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:39:48,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:39:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:48,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:39:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-14 02:39:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:48,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:48,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:48,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:48,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 02:39:48,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:48,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:48,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:39:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 241 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 02:39:48,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717221041] [2020-10-14 02:39:48,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:48,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:48,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697929337] [2020-10-14 02:39:48,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:48,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:48,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:48,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:48,311 INFO L87 Difference]: Start difference. First operand 14578 states and 16741 transitions. Second operand 7 states. [2020-10-14 02:39:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:52,085 INFO L93 Difference]: Finished difference Result 29737 states and 34240 transitions. [2020-10-14 02:39:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:52,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-14 02:39:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:52,115 INFO L225 Difference]: With dead ends: 29737 [2020-10-14 02:39:52,115 INFO L226 Difference]: Without dead ends: 15543 [2020-10-14 02:39:52,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15543 states. [2020-10-14 02:39:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15543 to 13401. [2020-10-14 02:39:52,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13401 states. [2020-10-14 02:39:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13401 states to 13401 states and 15391 transitions. [2020-10-14 02:39:52,479 INFO L78 Accepts]: Start accepts. Automaton has 13401 states and 15391 transitions. Word has length 388 [2020-10-14 02:39:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:52,479 INFO L479 AbstractCegarLoop]: Abstraction has 13401 states and 15391 transitions. [2020-10-14 02:39:52,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 13401 states and 15391 transitions. [2020-10-14 02:39:52,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-14 02:39:52,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:52,496 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:52,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 02:39:52,497 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:52,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:52,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1818038228, now seen corresponding path program 1 times [2020-10-14 02:39:52,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:52,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054676076] [2020-10-14 02:39:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:57,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 02:39:57,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:57,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4395 [2020-10-14 02:39:57,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:57,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-14 02:39:57,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:39:57,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:57,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:57,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:57,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:57,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:57,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:57,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:57,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:57,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:39:57,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:57,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 02:39:57,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:57,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:57,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:57,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:57,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:57,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:57,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:39:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:57,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:39:57,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:57,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 02:39:57,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:57,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:57,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:57,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:39:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:57,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:39:57,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 02:39:57,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:57,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:57,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:39:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:57,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-14 02:39:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:57,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:57,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:57,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:57,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 02:39:57,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:57,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:57,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:57,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-14 02:39:58,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054676076] [2020-10-14 02:39:58,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:58,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:58,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610109907] [2020-10-14 02:39:58,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:58,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:58,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:58,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:58,085 INFO L87 Difference]: Start difference. First operand 13401 states and 15391 transitions. Second operand 7 states. [2020-10-14 02:40:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:00,866 INFO L93 Difference]: Finished difference Result 26643 states and 30634 transitions. [2020-10-14 02:40:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:00,868 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 431 [2020-10-14 02:40:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:00,890 INFO L225 Difference]: With dead ends: 26643 [2020-10-14 02:40:00,890 INFO L226 Difference]: Without dead ends: 13436 [2020-10-14 02:40:00,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:40:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13436 states. [2020-10-14 02:40:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13436 to 13209. [2020-10-14 02:40:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13209 states. [2020-10-14 02:40:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13209 states to 13209 states and 15174 transitions. [2020-10-14 02:40:01,096 INFO L78 Accepts]: Start accepts. Automaton has 13209 states and 15174 transitions. Word has length 431 [2020-10-14 02:40:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:01,097 INFO L479 AbstractCegarLoop]: Abstraction has 13209 states and 15174 transitions. [2020-10-14 02:40:01,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 13209 states and 15174 transitions. [2020-10-14 02:40:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-14 02:40:01,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:01,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:01,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 02:40:01,112 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:01,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1448090363, now seen corresponding path program 1 times [2020-10-14 02:40:01,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:01,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388380274] [2020-10-14 02:40:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:01,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:01,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-14 02:40:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:40:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1166 [2020-10-14 02:40:02,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:40:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-14 02:40:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:02,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:40:02,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:40:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:02,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:02,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 02:40:02,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:02,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 02:40:02,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:40:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:40:02,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 02:40:02,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 02:40:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 02:40:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:02,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 02:40:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:02,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:02,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:02,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 02:40:02,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:02,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:40:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-10-14 02:40:03,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388380274] [2020-10-14 02:40:03,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:03,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:40:03,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364331695] [2020-10-14 02:40:03,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:40:03,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:03,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:40:03,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:40:03,015 INFO L87 Difference]: Start difference. First operand 13209 states and 15174 transitions. Second operand 6 states. [2020-10-14 02:40:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:04,662 INFO L93 Difference]: Finished difference Result 25283 states and 29024 transitions. [2020-10-14 02:40:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:04,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 434 [2020-10-14 02:40:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:04,685 INFO L225 Difference]: With dead ends: 25283 [2020-10-14 02:40:04,685 INFO L226 Difference]: Without dead ends: 12458 [2020-10-14 02:40:04,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12458 states. [2020-10-14 02:40:04,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12458 to 12424. [2020-10-14 02:40:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12424 states. [2020-10-14 02:40:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 14188 transitions. [2020-10-14 02:40:04,875 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 14188 transitions. Word has length 434 [2020-10-14 02:40:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:04,876 INFO L479 AbstractCegarLoop]: Abstraction has 12424 states and 14188 transitions. [2020-10-14 02:40:04,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:40:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 14188 transitions. [2020-10-14 02:40:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-14 02:40:04,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:04,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:04,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 02:40:04,888 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:04,888 INFO L82 PathProgramCache]: Analyzing trace with hash -910811148, now seen corresponding path program 1 times [2020-10-14 02:40:04,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:04,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749942530] [2020-10-14 02:40:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:07,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:07,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-14 02:40:07,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2058 [2020-10-14 02:40:07,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:07,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:07,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-14 02:40:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:40:07,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:07,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:07,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:07,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:40:07,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:07,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:07,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:07,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:07,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:40:07,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 02:40:07,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:07,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:07,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:40:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:07,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:07,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 02:40:07,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 02:40:07,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:07,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:07,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 02:40:07,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-14 02:40:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:07,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:07,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:07,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 02:40:07,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:07,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:07,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:07,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-14 02:40:07,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749942530] [2020-10-14 02:40:07,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:07,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:07,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689345235] [2020-10-14 02:40:07,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:07,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:07,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:07,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:07,846 INFO L87 Difference]: Start difference. First operand 12424 states and 14188 transitions. Second operand 7 states. [2020-10-14 02:40:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:10,932 INFO L93 Difference]: Finished difference Result 25067 states and 28619 transitions. [2020-10-14 02:40:10,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:40:10,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-14 02:40:10,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:10,961 INFO L225 Difference]: With dead ends: 25067 [2020-10-14 02:40:10,962 INFO L226 Difference]: Without dead ends: 13027 [2020-10-14 02:40:10,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:40:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13027 states. [2020-10-14 02:40:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13027 to 11848. [2020-10-14 02:40:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11848 states. [2020-10-14 02:40:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 13539 transitions. [2020-10-14 02:40:11,188 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 13539 transitions. Word has length 435 [2020-10-14 02:40:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:11,189 INFO L479 AbstractCegarLoop]: Abstraction has 11848 states and 13539 transitions. [2020-10-14 02:40:11,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 13539 transitions. [2020-10-14 02:40:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-14 02:40:11,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:11,199 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:11,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 02:40:11,200 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:11,200 INFO L82 PathProgramCache]: Analyzing trace with hash -23750235, now seen corresponding path program 1 times [2020-10-14 02:40:11,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:11,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289266712] [2020-10-14 02:40:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:11,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:11,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:11,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-14 02:40:11,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:11,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-14 02:40:11,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:11,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-14 02:40:11,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:40:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:12,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:12,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:12,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:12,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:12,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:12,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:12,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:12,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:12,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:40:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:12,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:12,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:12,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:12,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 02:40:12,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:12,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:12,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:40:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:12,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:12,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 02:40:12,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 02:40:12,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:12,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:12,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:12,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:12,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:40:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-14 02:40:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:12,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:12,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:12,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 02:40:12,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:12,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:12,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 445 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-14 02:40:12,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289266712] [2020-10-14 02:40:12,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:12,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:12,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653342498] [2020-10-14 02:40:12,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:12,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:12,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:12,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:12,720 INFO L87 Difference]: Start difference. First operand 11848 states and 13539 transitions. Second operand 7 states. [2020-10-14 02:40:15,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:15,653 INFO L93 Difference]: Finished difference Result 25260 states and 29071 transitions. [2020-10-14 02:40:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:40:15,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-14 02:40:15,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:15,685 INFO L225 Difference]: With dead ends: 25260 [2020-10-14 02:40:15,685 INFO L226 Difference]: Without dead ends: 13796 [2020-10-14 02:40:15,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13796 states. [2020-10-14 02:40:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13796 to 13194. [2020-10-14 02:40:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13194 states. [2020-10-14 02:40:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13194 states to 13194 states and 14985 transitions. [2020-10-14 02:40:15,863 INFO L78 Accepts]: Start accepts. Automaton has 13194 states and 14985 transitions. Word has length 448 [2020-10-14 02:40:15,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:15,864 INFO L479 AbstractCegarLoop]: Abstraction has 13194 states and 14985 transitions. [2020-10-14 02:40:15,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 13194 states and 14985 transitions. [2020-10-14 02:40:15,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-14 02:40:15,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:15,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:15,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 02:40:15,875 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:15,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:15,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1883607375, now seen corresponding path program 1 times [2020-10-14 02:40:15,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:15,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600258140] [2020-10-14 02:40:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:16,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:17,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:17,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-14 02:40:17,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1090 [2020-10-14 02:40:17,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:17,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 421 [2020-10-14 02:40:17,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 02:40:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:17,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:17,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:17,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:17,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:17,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:17,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:17,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:17,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:17,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:40:17,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:40:17,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:17,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:40:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:17,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:17,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:17,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 02:40:17,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:17,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:17,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:40:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:17,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:17,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 02:40:17,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 02:40:17,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:17,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:17,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 02:40:17,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 132 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-14 02:40:17,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600258140] [2020-10-14 02:40:17,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:17,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:40:17,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546548911] [2020-10-14 02:40:17,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:40:17,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:17,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:40:17,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:40:17,722 INFO L87 Difference]: Start difference. First operand 13194 states and 14985 transitions. Second operand 5 states. [2020-10-14 02:40:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:20,733 INFO L93 Difference]: Finished difference Result 28715 states and 32656 transitions. [2020-10-14 02:40:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:20,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2020-10-14 02:40:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:20,756 INFO L225 Difference]: With dead ends: 28715 [2020-10-14 02:40:20,756 INFO L226 Difference]: Without dead ends: 14567 [2020-10-14 02:40:20,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:40:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14567 states. [2020-10-14 02:40:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14567 to 13393. [2020-10-14 02:40:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13393 states. [2020-10-14 02:40:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13393 states to 13393 states and 15302 transitions. [2020-10-14 02:40:20,966 INFO L78 Accepts]: Start accepts. Automaton has 13393 states and 15302 transitions. Word has length 457 [2020-10-14 02:40:20,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:20,967 INFO L479 AbstractCegarLoop]: Abstraction has 13393 states and 15302 transitions. [2020-10-14 02:40:20,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:40:20,967 INFO L276 IsEmpty]: Start isEmpty. Operand 13393 states and 15302 transitions. [2020-10-14 02:40:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-14 02:40:20,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:20,978 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:20,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 02:40:20,978 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:20,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1925228671, now seen corresponding path program 1 times [2020-10-14 02:40:20,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:20,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971059033] [2020-10-14 02:40:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:21,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:23,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-14 02:40:23,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2570 [2020-10-14 02:40:23,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:23,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-14 02:40:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:40:23,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:23,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:23,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:23,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:23,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:23,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:23,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:23,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:23,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:23,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:23,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:23,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:23,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:40:23,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:23,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 02:40:23,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:23,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:23,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:40:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:23,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 02:40:23,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:23,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-14 02:40:23,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:23,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 02:40:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-14 02:40:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:24,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:24,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:24,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:40:24,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:24,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-14 02:40:24,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971059033] [2020-10-14 02:40:24,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:24,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:24,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605237909] [2020-10-14 02:40:24,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:24,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:24,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:24,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:24,384 INFO L87 Difference]: Start difference. First operand 13393 states and 15302 transitions. Second operand 7 states. [2020-10-14 02:40:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:27,776 INFO L93 Difference]: Finished difference Result 27211 states and 31101 transitions. [2020-10-14 02:40:27,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:27,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 457 [2020-10-14 02:40:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:27,799 INFO L225 Difference]: With dead ends: 27211 [2020-10-14 02:40:27,799 INFO L226 Difference]: Without dead ends: 13615 [2020-10-14 02:40:27,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13615 states. [2020-10-14 02:40:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13615 to 13191. [2020-10-14 02:40:27,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13191 states. [2020-10-14 02:40:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13191 states to 13191 states and 14950 transitions. [2020-10-14 02:40:27,969 INFO L78 Accepts]: Start accepts. Automaton has 13191 states and 14950 transitions. Word has length 457 [2020-10-14 02:40:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:27,969 INFO L479 AbstractCegarLoop]: Abstraction has 13191 states and 14950 transitions. [2020-10-14 02:40:27,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 13191 states and 14950 transitions. [2020-10-14 02:40:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-14 02:40:27,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:27,977 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:27,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 02:40:27,977 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:27,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1623580180, now seen corresponding path program 1 times [2020-10-14 02:40:27,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:27,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671600913] [2020-10-14 02:40:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:28,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:28,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:28,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-14 02:40:28,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-14 02:40:28,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:28,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 02:40:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:40:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:28,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:28,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:28,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:28,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:28,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:28,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:28,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:28,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:28,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:40:28,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:40:28,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:28,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:28,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:28,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:28,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:40:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:28,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:28,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:40:28,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:28,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:40:28,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:28,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:28,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 02:40:28,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:28,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 02:40:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:29,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:29,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:29,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:40:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:29,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:29,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:29,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 02:40:29,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671600913] [2020-10-14 02:40:29,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:29,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:29,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822002803] [2020-10-14 02:40:29,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:29,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:29,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:29,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:29,309 INFO L87 Difference]: Start difference. First operand 13191 states and 14950 transitions. Second operand 7 states. [2020-10-14 02:40:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:32,425 INFO L93 Difference]: Finished difference Result 26420 states and 29941 transitions. [2020-10-14 02:40:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:40:32,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-14 02:40:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:32,447 INFO L225 Difference]: With dead ends: 26420 [2020-10-14 02:40:32,448 INFO L226 Difference]: Without dead ends: 13613 [2020-10-14 02:40:32,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:40:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13613 states. [2020-10-14 02:40:32,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13613 to 13191. [2020-10-14 02:40:32,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13191 states. [2020-10-14 02:40:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13191 states to 13191 states and 14864 transitions. [2020-10-14 02:40:32,603 INFO L78 Accepts]: Start accepts. Automaton has 13191 states and 14864 transitions. Word has length 470 [2020-10-14 02:40:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:32,603 INFO L479 AbstractCegarLoop]: Abstraction has 13191 states and 14864 transitions. [2020-10-14 02:40:32,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:32,604 INFO L276 IsEmpty]: Start isEmpty. Operand 13191 states and 14864 transitions. [2020-10-14 02:40:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-14 02:40:32,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:32,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:32,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 02:40:32,613 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:32,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1878527995, now seen corresponding path program 1 times [2020-10-14 02:40:32,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:32,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1628860884] [2020-10-14 02:40:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:34,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-14 02:40:34,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:34,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1954 [2020-10-14 02:40:34,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:34,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 02:40:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:40:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 482 [2020-10-14 02:40:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:40:34,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:34,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:40:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:34,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:34,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:40:35,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 02:40:35,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:35,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:35,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 02:40:35,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:40:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:40:35,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 02:40:35,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:35,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 02:40:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:35,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-14 02:40:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:35,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 02:40:35,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:40:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 174 proven. 135 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-14 02:40:36,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1628860884] [2020-10-14 02:40:36,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:36,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:40:36,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418485351] [2020-10-14 02:40:36,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 02:40:36,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:36,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 02:40:36,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 02:40:36,204 INFO L87 Difference]: Start difference. First operand 13191 states and 14864 transitions. Second operand 9 states. [2020-10-14 02:40:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:40,323 INFO L93 Difference]: Finished difference Result 31278 states and 35264 transitions. [2020-10-14 02:40:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 02:40:40,325 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 474 [2020-10-14 02:40:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:40,356 INFO L225 Difference]: With dead ends: 31278 [2020-10-14 02:40:40,356 INFO L226 Difference]: Without dead ends: 18089 [2020-10-14 02:40:40,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:40:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18089 states. [2020-10-14 02:40:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18089 to 17808. [2020-10-14 02:40:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17808 states. [2020-10-14 02:40:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17808 states to 17808 states and 19967 transitions. [2020-10-14 02:40:40,576 INFO L78 Accepts]: Start accepts. Automaton has 17808 states and 19967 transitions. Word has length 474 [2020-10-14 02:40:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:40,576 INFO L479 AbstractCegarLoop]: Abstraction has 17808 states and 19967 transitions. [2020-10-14 02:40:40,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 02:40:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 17808 states and 19967 transitions. [2020-10-14 02:40:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-14 02:40:40,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:40,588 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:40,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 02:40:40,589 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:40,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1155261076, now seen corresponding path program 1 times [2020-10-14 02:40:40,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:40,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98293476] [2020-10-14 02:40:40,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:41,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:41,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-14 02:40:41,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:41,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-14 02:40:41,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:41,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:41,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:41,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 447 [2020-10-14 02:40:41,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 02:40:41,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:41,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:41,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:41,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:41,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:41,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:41,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:41,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:41,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:41,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:41,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:41,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:41,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:40:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:41,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:41,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:41,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 02:40:41,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:41,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:41,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:40:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:41,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:41,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 02:40:41,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 02:40:41,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:41,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:41,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 02:40:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 132 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-14 02:40:41,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98293476] [2020-10-14 02:40:41,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:41,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:40:41,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103606673] [2020-10-14 02:40:41,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:40:41,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:41,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:40:41,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:40:41,969 INFO L87 Difference]: Start difference. First operand 17808 states and 19967 transitions. Second operand 5 states. [2020-10-14 02:40:44,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:44,484 INFO L93 Difference]: Finished difference Result 33524 states and 37600 transitions. [2020-10-14 02:40:44,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:44,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2020-10-14 02:40:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:44,514 INFO L225 Difference]: With dead ends: 33524 [2020-10-14 02:40:44,515 INFO L226 Difference]: Without dead ends: 19175 [2020-10-14 02:40:44,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:40:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19175 states. [2020-10-14 02:40:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19175 to 17993. [2020-10-14 02:40:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17993 states. [2020-10-14 02:40:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17993 states to 17993 states and 20182 transitions. [2020-10-14 02:40:44,748 INFO L78 Accepts]: Start accepts. Automaton has 17993 states and 20182 transitions. Word has length 483 [2020-10-14 02:40:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:44,749 INFO L479 AbstractCegarLoop]: Abstraction has 17993 states and 20182 transitions. [2020-10-14 02:40:44,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:40:44,749 INFO L276 IsEmpty]: Start isEmpty. Operand 17993 states and 20182 transitions. [2020-10-14 02:40:44,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-14 02:40:44,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:44,762 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:44,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 02:40:44,762 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:44,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:44,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1975501740, now seen corresponding path program 1 times [2020-10-14 02:40:44,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:44,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971425624] [2020-10-14 02:40:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:44,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:45,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:45,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-14 02:40:49,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:40:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 02:40:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-14 02:40:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 02:40:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:49,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:49,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:49,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:40:49,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:49,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:40:49,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:40:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 02:40:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:40:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:40:50,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:50,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 02:40:50,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 02:40:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-14 02:40:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:50,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:50,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:50,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:50,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 02:40:50,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:50,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:50,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 447 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-14 02:40:50,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971425624] [2020-10-14 02:40:50,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:50,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:50,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729381706] [2020-10-14 02:40:50,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:50,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:50,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:50,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:50,478 INFO L87 Difference]: Start difference. First operand 17993 states and 20182 transitions. Second operand 7 states. [2020-10-14 02:40:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:55,162 INFO L93 Difference]: Finished difference Result 31195 states and 35065 transitions. [2020-10-14 02:40:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:40:55,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-14 02:40:55,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:55,190 INFO L225 Difference]: With dead ends: 31195 [2020-10-14 02:40:55,191 INFO L226 Difference]: Without dead ends: 16869 [2020-10-14 02:40:55,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16869 states. [2020-10-14 02:40:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16869 to 16433. [2020-10-14 02:40:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16433 states. [2020-10-14 02:40:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16433 states to 16433 states and 18101 transitions. [2020-10-14 02:40:55,393 INFO L78 Accepts]: Start accepts. Automaton has 16433 states and 18101 transitions. Word has length 493 [2020-10-14 02:40:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:55,394 INFO L479 AbstractCegarLoop]: Abstraction has 16433 states and 18101 transitions. [2020-10-14 02:40:55,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 16433 states and 18101 transitions. [2020-10-14 02:40:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2020-10-14 02:40:55,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:55,405 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:55,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 02:40:55,405 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1766298368, now seen corresponding path program 1 times [2020-10-14 02:40:55,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:55,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239752398] [2020-10-14 02:40:55,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 527 [2020-10-14 02:40:57,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1902 [2020-10-14 02:40:57,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 02:40:57,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 02:40:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:57,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:57,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:57,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:57,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:57,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:57,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:57,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:57,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:40:57,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:57,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:40:57,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:40:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:57,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:57,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 02:40:57,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:57,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:57,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:40:57,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:57,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:40:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 02:40:57,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 02:40:57,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 02:40:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:57,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-14 02:40:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:57,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:57,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:57,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:40:57,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:57,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:40:57,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 415 proven. 93 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2020-10-14 02:40:57,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239752398] [2020-10-14 02:40:57,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:57,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:57,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063043826] [2020-10-14 02:40:57,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:57,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:57,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:57,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:57,981 INFO L87 Difference]: Start difference. First operand 16433 states and 18101 transitions. Second operand 7 states. [2020-10-14 02:41:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:01,392 INFO L93 Difference]: Finished difference Result 30408 states and 33547 transitions. [2020-10-14 02:41:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:41:01,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 511 [2020-10-14 02:41:01,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:01,421 INFO L225 Difference]: With dead ends: 30408 [2020-10-14 02:41:01,422 INFO L226 Difference]: Without dead ends: 17432 [2020-10-14 02:41:01,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17432 states. [2020-10-14 02:41:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17432 to 17373. [2020-10-14 02:41:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17373 states. [2020-10-14 02:41:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17373 states to 17373 states and 18937 transitions. [2020-10-14 02:41:01,633 INFO L78 Accepts]: Start accepts. Automaton has 17373 states and 18937 transitions. Word has length 511 [2020-10-14 02:41:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:01,634 INFO L479 AbstractCegarLoop]: Abstraction has 17373 states and 18937 transitions. [2020-10-14 02:41:01,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 17373 states and 18937 transitions. [2020-10-14 02:41:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-14 02:41:01,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:01,649 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:01,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 02:41:01,649 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:01,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:01,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1512845500, now seen corresponding path program 1 times [2020-10-14 02:41:01,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:01,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738406302] [2020-10-14 02:41:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:04,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:04,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-14 02:41:04,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:04,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3049 [2020-10-14 02:41:04,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:04,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:41:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 02:41:04,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-14 02:41:04,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:04,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:04,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:04,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:04,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:04,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:04,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:04,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:04,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:04,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:04,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:04,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:04,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:41:04,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 02:41:04,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:04,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:04,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:05,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:41:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:05,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:05,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:05,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:41:05,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 02:41:05,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:05,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:05,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 02:41:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 02:41:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:05,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:05,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:41:05,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 02:41:05,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:05,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:41:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:41:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:05,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-14 02:41:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:05,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:41:05,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:41:05,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:05,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:41:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 581 proven. 93 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 02:41:06,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738406302] [2020-10-14 02:41:06,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:06,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 02:41:06,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836464620] [2020-10-14 02:41:06,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 02:41:06,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:06,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 02:41:06,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:41:06,116 INFO L87 Difference]: Start difference. First operand 17373 states and 18937 transitions. Second operand 10 states. [2020-10-14 02:41:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:11,679 INFO L93 Difference]: Finished difference Result 31156 states and 34080 transitions. [2020-10-14 02:41:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 02:41:11,681 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 583 [2020-10-14 02:41:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:11,713 INFO L225 Difference]: With dead ends: 31156 [2020-10-14 02:41:11,713 INFO L226 Difference]: Without dead ends: 18586 [2020-10-14 02:41:11,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2020-10-14 02:41:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18586 states. [2020-10-14 02:41:11,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18586 to 17769. [2020-10-14 02:41:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17769 states. [2020-10-14 02:41:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17769 states to 17769 states and 19287 transitions. [2020-10-14 02:41:11,930 INFO L78 Accepts]: Start accepts. Automaton has 17769 states and 19287 transitions. Word has length 583 [2020-10-14 02:41:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:11,931 INFO L479 AbstractCegarLoop]: Abstraction has 17769 states and 19287 transitions. [2020-10-14 02:41:11,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 02:41:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 17769 states and 19287 transitions. [2020-10-14 02:41:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2020-10-14 02:41:11,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:11,946 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:11,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 02:41:11,946 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:11,946 INFO L82 PathProgramCache]: Analyzing trace with hash -917693478, now seen corresponding path program 1 times [2020-10-14 02:41:11,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:11,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98154388] [2020-10-14 02:41:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:12,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:12,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:13,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:15,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:17,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 704 [2020-10-14 02:41:17,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 02:41:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 02:41:17,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:17,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:41:17,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 553 [2020-10-14 02:41:17,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:17,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:17,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:17,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:17,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:41:17,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:17,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:17,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:17,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:41:17,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:41:17,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:17,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:17,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:41:17,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:41:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:17,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:17,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 02:41:17,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:17,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 02:41:17,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:17,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:41:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:17,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:41:17,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:17,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 02:41:17,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:17,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 02:41:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2020-10-14 02:41:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:17,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-14 02:41:17,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 02:41:17,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:17,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 02:41:17,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 02:41:17,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:17,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2020-10-14 02:41:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:17,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:17,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:41:17,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:41:17,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:17,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:41:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1308 backedges. 236 proven. 2 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2020-10-14 02:41:18,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98154388] [2020-10-14 02:41:18,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:18,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:41:18,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100973014] [2020-10-14 02:41:18,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:41:18,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:18,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:41:18,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:41:18,133 INFO L87 Difference]: Start difference. First operand 17769 states and 19287 transitions. Second operand 6 states. [2020-10-14 02:41:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:20,001 INFO L93 Difference]: Finished difference Result 32088 states and 34767 transitions. [2020-10-14 02:41:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:41:20,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 686 [2020-10-14 02:41:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:20,028 INFO L225 Difference]: With dead ends: 32088 [2020-10-14 02:41:20,028 INFO L226 Difference]: Without dead ends: 15855 [2020-10-14 02:41:20,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15855 states. [2020-10-14 02:41:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15855 to 15806. [2020-10-14 02:41:20,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15806 states. [2020-10-14 02:41:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15806 states to 15806 states and 17103 transitions. [2020-10-14 02:41:20,205 INFO L78 Accepts]: Start accepts. Automaton has 15806 states and 17103 transitions. Word has length 686 [2020-10-14 02:41:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:20,206 INFO L479 AbstractCegarLoop]: Abstraction has 15806 states and 17103 transitions. [2020-10-14 02:41:20,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:41:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 15806 states and 17103 transitions. [2020-10-14 02:41:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2020-10-14 02:41:20,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:20,221 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:20,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 02:41:20,221 INFO L427 AbstractCegarLoop]: === Iteration 34 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:20,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:20,221 INFO L82 PathProgramCache]: Analyzing trace with hash 385219515, now seen corresponding path program 1 times [2020-10-14 02:41:20,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:20,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104031875] [2020-10-14 02:41:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking...