/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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:16:14,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:16:14,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:16:14,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:16:14,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:16:14,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:16:14,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:16:14,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:16:14,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:16:14,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:16:14,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:16:14,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:16:14,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:16:14,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:16:14,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:16:14,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:16:14,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:16:14,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:16:14,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:16:14,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:16:14,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:16:14,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:16:14,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:16:14,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:16:14,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:16:14,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:16:14,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:16:14,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:16:14,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:16:14,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:16:14,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:16:14,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:16:14,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:16:14,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:16:14,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:16:14,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:16:14,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:16:14,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:16:14,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:16:14,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:16:14,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:16:14,328 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 09:16:14,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:16:14,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:16:14,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:16:14,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:16:14,360 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:16:14,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:16:14,360 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:16:14,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:16:14,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:16:14,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:16:14,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:16:14,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:16:14,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:16:14,362 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:16:14,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:16:14,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:16:14,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:16:14,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:16:14,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:16:14,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:16:14,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:16:14,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:16:14,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:16:14,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:16:14,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:16:14,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:16:14,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:16:14,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:16:14,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:16:14,367 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 09:16:14,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:16:14,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:16:14,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:16:14,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:16:14,702 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:16:14,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-14 09:16:14,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f17a698e/ab03744b444043a2b438bb65ad788664/FLAG0b8093779 [2020-10-14 09:16:15,235 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:16:15,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-14 09:16:15,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f17a698e/ab03744b444043a2b438bb65ad788664/FLAG0b8093779 [2020-10-14 09:16:15,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f17a698e/ab03744b444043a2b438bb65ad788664 [2020-10-14 09:16:15,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:16:15,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:16:15,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:16:15,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:16:15,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:16:15,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:16:15" (1/1) ... [2020-10-14 09:16:15,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:15, skipping insertion in model container [2020-10-14 09:16:15,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:16:15" (1/1) ... [2020-10-14 09:16:15,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:16:15,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:16:16,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:16:16,252 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:16:16,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:16:16,440 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:16:16,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16 WrapperNode [2020-10-14 09:16:16,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:16:16,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:16:16,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:16:16,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:16:16,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (1/1) ... [2020-10-14 09:16:16,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (1/1) ... [2020-10-14 09:16:16,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (1/1) ... [2020-10-14 09:16:16,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (1/1) ... [2020-10-14 09:16:16,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (1/1) ... [2020-10-14 09:16:16,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (1/1) ... [2020-10-14 09:16:16,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (1/1) ... [2020-10-14 09:16:16,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:16:16,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:16:16,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:16:16,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:16:16,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (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 09:16:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:16:16,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:16:16,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:16:16,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:16:16,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:16:16,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:16:16,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:16:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:16:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:16:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:16:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:16:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:16:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:16:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:16:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:16:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:16:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:16:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:16:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:16:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:16:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:16:16,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:16:17,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:16:17,890 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:16:17,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:16:17 BoogieIcfgContainer [2020-10-14 09:16:17,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:16:17,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:16:17,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:16:17,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:16:17,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:16:15" (1/3) ... [2020-10-14 09:16:17,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ca33f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:16:17, skipping insertion in model container [2020-10-14 09:16:17,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:16:16" (2/3) ... [2020-10-14 09:16:17,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ca33f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:16:17, skipping insertion in model container [2020-10-14 09:16:17,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:16:17" (3/3) ... [2020-10-14 09:16:17,905 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-14 09:16:17,916 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:16:17,924 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:16:17,937 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:16:17,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:16:17,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:16:17,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:16:17,961 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:16:17,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:16:17,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:16:17,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:16:17,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:16:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-10-14 09:16:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 09:16:18,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:18,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:18,006 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:18,012 INFO L82 PathProgramCache]: Analyzing trace with hash 182242760, now seen corresponding path program 1 times [2020-10-14 09:16:18,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:18,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61187542] [2020-10-14 09:16:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:18,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:18,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:18,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:19,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:23,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:23,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 09:16:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:16:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:16:23,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:23,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:16:23,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 09:16:23,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:16:23,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:16:23,754 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:16:23,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:23,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:23,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:23,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:16:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:23,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:16:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:16:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:23,835 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 09:16:23,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61187542] [2020-10-14 09:16:23,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:23,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:16:23,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977270892] [2020-10-14 09:16:23,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:16:23,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:23,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:16:23,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:16:23,865 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 4 states. [2020-10-14 09:16:24,181 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 09:16:26,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:26,687 INFO L93 Difference]: Finished difference Result 882 states and 1425 transitions. [2020-10-14 09:16:26,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:16:26,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-10-14 09:16:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:26,711 INFO L225 Difference]: With dead ends: 882 [2020-10-14 09:16:26,712 INFO L226 Difference]: Without dead ends: 674 [2020-10-14 09:16:26,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:16:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-10-14 09:16:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 639. [2020-10-14 09:16:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-14 09:16:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1027 transitions. [2020-10-14 09:16:26,818 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1027 transitions. Word has length 107 [2020-10-14 09:16:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:26,819 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 1027 transitions. [2020-10-14 09:16:26,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:16:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1027 transitions. [2020-10-14 09:16:26,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 09:16:26,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:26,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:26,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:16:26,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:26,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:26,827 INFO L82 PathProgramCache]: Analyzing trace with hash -284441236, now seen corresponding path program 1 times [2020-10-14 09:16:26,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:26,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906664454] [2020-10-14 09:16:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:31,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:31,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 09:16:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:16:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 09:16:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:31,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:16:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 09:16:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:16:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:32,170 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:16:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:32,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:32,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:32,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:32,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:16:32,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:32,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:16:32,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:32,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:16:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:32,218 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 09:16:32,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906664454] [2020-10-14 09:16:32,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:32,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:16:32,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920786114] [2020-10-14 09:16:32,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:16:32,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:32,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:16:32,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:16:32,222 INFO L87 Difference]: Start difference. First operand 639 states and 1027 transitions. Second operand 4 states. [2020-10-14 09:16:32,443 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 09:16:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:34,984 INFO L93 Difference]: Finished difference Result 1681 states and 2683 transitions. [2020-10-14 09:16:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:16:34,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-10-14 09:16:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:34,997 INFO L225 Difference]: With dead ends: 1681 [2020-10-14 09:16:34,997 INFO L226 Difference]: Without dead ends: 1195 [2020-10-14 09:16:35,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:16:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-14 09:16:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1157. [2020-10-14 09:16:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-10-14 09:16:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1846 transitions. [2020-10-14 09:16:35,091 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1846 transitions. Word has length 109 [2020-10-14 09:16:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:35,094 INFO L479 AbstractCegarLoop]: Abstraction has 1157 states and 1846 transitions. [2020-10-14 09:16:35,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:16:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1846 transitions. [2020-10-14 09:16:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 09:16:35,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:35,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:35,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:16:35,102 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:35,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:35,102 INFO L82 PathProgramCache]: Analyzing trace with hash -435965866, now seen corresponding path program 1 times [2020-10-14 09:16:35,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:35,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436592104] [2020-10-14 09:16:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:35,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:37,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:40,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:40,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 09:16:40,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:16:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-14 09:16:40,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:40,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:16:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 09:16:40,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:16:40,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:40,484 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:16:40,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:40,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:40,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:40,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:40,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:16:40,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:40,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:16:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:40,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:16:40,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:40,532 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 09:16:40,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436592104] [2020-10-14 09:16:40,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:40,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:16:40,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245381903] [2020-10-14 09:16:40,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:16:40,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:40,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:16:40,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:16:40,538 INFO L87 Difference]: Start difference. First operand 1157 states and 1846 transitions. Second operand 4 states. [2020-10-14 09:16:40,742 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 09:16:42,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:42,621 INFO L93 Difference]: Finished difference Result 3019 states and 4792 transitions. [2020-10-14 09:16:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:16:42,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-10-14 09:16:42,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:42,635 INFO L225 Difference]: With dead ends: 3019 [2020-10-14 09:16:42,638 INFO L226 Difference]: Without dead ends: 2165 [2020-10-14 09:16:42,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:16:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-10-14 09:16:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2031. [2020-10-14 09:16:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2031 states. [2020-10-14 09:16:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 3216 transitions. [2020-10-14 09:16:42,746 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 3216 transitions. Word has length 109 [2020-10-14 09:16:42,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:42,747 INFO L479 AbstractCegarLoop]: Abstraction has 2031 states and 3216 transitions. [2020-10-14 09:16:42,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:16:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 3216 transitions. [2020-10-14 09:16:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 09:16:42,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:42,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:42,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:16:42,754 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:42,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1340939254, now seen corresponding path program 1 times [2020-10-14 09:16:42,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:42,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150140537] [2020-10-14 09:16:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:42,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:43,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:47,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:47,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 09:16:47,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:16:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:16:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:47,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:16:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 09:16:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:16:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:16:48,116 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:16:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:48,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:48,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:48,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:16:48,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:48,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:16:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:16:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:48,178 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 09:16:48,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150140537] [2020-10-14 09:16:48,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:48,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:16:48,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90991372] [2020-10-14 09:16:48,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:16:48,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:48,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:16:48,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:16:48,184 INFO L87 Difference]: Start difference. First operand 2031 states and 3216 transitions. Second operand 4 states. [2020-10-14 09:16:48,503 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 09:16:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:51,407 INFO L93 Difference]: Finished difference Result 5215 states and 8218 transitions. [2020-10-14 09:16:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:16:51,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-14 09:16:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:51,428 INFO L225 Difference]: With dead ends: 5215 [2020-10-14 09:16:51,428 INFO L226 Difference]: Without dead ends: 3781 [2020-10-14 09:16:51,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:16:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2020-10-14 09:16:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 3515. [2020-10-14 09:16:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3515 states. [2020-10-14 09:16:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3515 states to 3515 states and 5516 transitions. [2020-10-14 09:16:51,626 INFO L78 Accepts]: Start accepts. Automaton has 3515 states and 5516 transitions. Word has length 111 [2020-10-14 09:16:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:51,628 INFO L479 AbstractCegarLoop]: Abstraction has 3515 states and 5516 transitions. [2020-10-14 09:16:51,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:16:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3515 states and 5516 transitions. [2020-10-14 09:16:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:16:51,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:51,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:51,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:16:51,641 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:51,641 INFO L82 PathProgramCache]: Analyzing trace with hash 160019514, now seen corresponding path program 1 times [2020-10-14 09:16:51,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:51,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084524893] [2020-10-14 09:16:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:51,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:55,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:56,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:56,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:16:56,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:16:56,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:16:56,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:56,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:16:56,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 09:16:56,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:16:56,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:56,934 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:16:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:16:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:56,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:16:56,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:16:56,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:16:56,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:16:56,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:16:56,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:16:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:16:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:16:56,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:16:56,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:16:56,980 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 09:16:56,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084524893] [2020-10-14 09:16:56,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:16:56,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:16:56,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870035986] [2020-10-14 09:16:56,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:16:56,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:16:56,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:16:56,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:16:56,985 INFO L87 Difference]: Start difference. First operand 3515 states and 5516 transitions. Second operand 4 states. [2020-10-14 09:16:57,192 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 09:16:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:16:59,581 INFO L93 Difference]: Finished difference Result 8807 states and 13742 transitions. [2020-10-14 09:16:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:16:59,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-14 09:16:59,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:16:59,614 INFO L225 Difference]: With dead ends: 8807 [2020-10-14 09:16:59,614 INFO L226 Difference]: Without dead ends: 6485 [2020-10-14 09:16:59,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:16:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2020-10-14 09:16:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 5955. [2020-10-14 09:16:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5955 states. [2020-10-14 09:16:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 9236 transitions. [2020-10-14 09:16:59,908 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 9236 transitions. Word has length 113 [2020-10-14 09:16:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:16:59,908 INFO L479 AbstractCegarLoop]: Abstraction has 5955 states and 9236 transitions. [2020-10-14 09:16:59,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:16:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 9236 transitions. [2020-10-14 09:16:59,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 09:16:59,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:16:59,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:16:59,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:16:59,925 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:16:59,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:16:59,925 INFO L82 PathProgramCache]: Analyzing trace with hash 710731434, now seen corresponding path program 1 times [2020-10-14 09:16:59,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:16:59,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518057983] [2020-10-14 09:16:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:16:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:16:59,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:16:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:00,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:00,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:03,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:03,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 09:17:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:17:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3851 [2020-10-14 09:17:03,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:03,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:17:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 09:17:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:17:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:04,036 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:04,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:04,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:04,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:04,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:17:04,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:04,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:04,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:04,078 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 09:17:04,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518057983] [2020-10-14 09:17:04,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:04,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:17:04,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417771737] [2020-10-14 09:17:04,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:17:04,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:04,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:17:04,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:04,081 INFO L87 Difference]: Start difference. First operand 5955 states and 9236 transitions. Second operand 5 states. [2020-10-14 09:17:05,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:05,898 INFO L93 Difference]: Finished difference Result 7765 states and 12005 transitions. [2020-10-14 09:17:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:05,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-14 09:17:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:05,925 INFO L225 Difference]: With dead ends: 7765 [2020-10-14 09:17:05,926 INFO L226 Difference]: Without dead ends: 5955 [2020-10-14 09:17:05,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5955 states. [2020-10-14 09:17:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5955 to 5955. [2020-10-14 09:17:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5955 states. [2020-10-14 09:17:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 9172 transitions. [2020-10-14 09:17:06,191 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 9172 transitions. Word has length 115 [2020-10-14 09:17:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:06,191 INFO L479 AbstractCegarLoop]: Abstraction has 5955 states and 9172 transitions. [2020-10-14 09:17:06,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:17:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 9172 transitions. [2020-10-14 09:17:06,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-14 09:17:06,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:06,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:06,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:17:06,206 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:06,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:06,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1723627523, now seen corresponding path program 1 times [2020-10-14 09:17:06,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:06,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058465681] [2020-10-14 09:17:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:08,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:08,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 09:17:08,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:17:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2045 [2020-10-14 09:17:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:08,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 09:17:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 09:17:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:08,483 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:08,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:08,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:08,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:08,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:17:08,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:08,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:08,529 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 09:17:08,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058465681] [2020-10-14 09:17:08,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:08,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:08,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821515311] [2020-10-14 09:17:08,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:08,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:08,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:08,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:08,531 INFO L87 Difference]: Start difference. First operand 5955 states and 9172 transitions. Second operand 4 states. [2020-10-14 09:17:10,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:10,660 INFO L93 Difference]: Finished difference Result 14519 states and 22214 transitions. [2020-10-14 09:17:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:17:10,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-14 09:17:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:10,698 INFO L225 Difference]: With dead ends: 14519 [2020-10-14 09:17:10,698 INFO L226 Difference]: Without dead ends: 10435 [2020-10-14 09:17:10,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2020-10-14 09:17:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10433. [2020-10-14 09:17:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10433 states. [2020-10-14 09:17:11,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10433 states to 10433 states and 15835 transitions. [2020-10-14 09:17:11,156 INFO L78 Accepts]: Start accepts. Automaton has 10433 states and 15835 transitions. Word has length 116 [2020-10-14 09:17:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:11,157 INFO L479 AbstractCegarLoop]: Abstraction has 10433 states and 15835 transitions. [2020-10-14 09:17:11,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:11,157 INFO L276 IsEmpty]: Start isEmpty. Operand 10433 states and 15835 transitions. [2020-10-14 09:17:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 09:17:11,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:11,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:11,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:17:11,177 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:11,177 INFO L82 PathProgramCache]: Analyzing trace with hash -72498845, now seen corresponding path program 1 times [2020-10-14 09:17:11,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:11,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772437036] [2020-10-14 09:17:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:11,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:11,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:11,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 09:17:11,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:17:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-14 09:17:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:11,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 09:17:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 09:17:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:11,764 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:11,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:11,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:11,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:11,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:17:11,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:11,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:11,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:11,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:11,813 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 09:17:11,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772437036] [2020-10-14 09:17:11,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:11,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:11,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269523581] [2020-10-14 09:17:11,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:11,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:11,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:11,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:11,815 INFO L87 Difference]: Start difference. First operand 10433 states and 15835 transitions. Second operand 4 states. [2020-10-14 09:17:12,029 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 09:17:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:14,751 INFO L93 Difference]: Finished difference Result 19430 states and 29396 transitions. [2020-10-14 09:17:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:14,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-14 09:17:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:14,781 INFO L225 Difference]: With dead ends: 19430 [2020-10-14 09:17:14,781 INFO L226 Difference]: Without dead ends: 13654 [2020-10-14 09:17:14,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:14,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13654 states. [2020-10-14 09:17:15,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13654 to 12572. [2020-10-14 09:17:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12572 states. [2020-10-14 09:17:15,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12572 states to 12572 states and 19046 transitions. [2020-10-14 09:17:15,414 INFO L78 Accepts]: Start accepts. Automaton has 12572 states and 19046 transitions. Word has length 118 [2020-10-14 09:17:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:15,414 INFO L479 AbstractCegarLoop]: Abstraction has 12572 states and 19046 transitions. [2020-10-14 09:17:15,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 12572 states and 19046 transitions. [2020-10-14 09:17:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 09:17:15,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:15,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:17:15,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:17:15,437 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:15,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:15,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2028970676, now seen corresponding path program 1 times [2020-10-14 09:17:15,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:15,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724434150] [2020-10-14 09:17:15,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:15,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:15,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:15,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 09:17:15,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:17:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 09:17:15,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:15,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:17:15,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:17:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:17:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:16,139 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:16,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:16,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:16,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:16,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 09:17:16,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:16,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:17:16,191 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 09:17:16,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724434150] [2020-10-14 09:17:16,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:16,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:17:16,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069065242] [2020-10-14 09:17:16,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:17:16,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:16,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:17:16,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:16,194 INFO L87 Difference]: Start difference. First operand 12572 states and 19046 transitions. Second operand 5 states. [2020-10-14 09:17:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:18,049 INFO L93 Difference]: Finished difference Result 25106 states and 38022 transitions. [2020-10-14 09:17:18,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:17:18,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-14 09:17:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:18,077 INFO L225 Difference]: With dead ends: 25106 [2020-10-14 09:17:18,077 INFO L226 Difference]: Without dead ends: 12572 [2020-10-14 09:17:18,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12572 states. [2020-10-14 09:17:18,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12572 to 12572. [2020-10-14 09:17:18,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12572 states. [2020-10-14 09:17:18,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12572 states to 12572 states and 19014 transitions. [2020-10-14 09:17:18,565 INFO L78 Accepts]: Start accepts. Automaton has 12572 states and 19014 transitions. Word has length 119 [2020-10-14 09:17:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:18,565 INFO L479 AbstractCegarLoop]: Abstraction has 12572 states and 19014 transitions. [2020-10-14 09:17:18,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:17:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 12572 states and 19014 transitions. [2020-10-14 09:17:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:17:18,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:18,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:18,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:17:18,585 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:18,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:18,586 INFO L82 PathProgramCache]: Analyzing trace with hash -103974600, now seen corresponding path program 1 times [2020-10-14 09:17:18,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:18,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120876818] [2020-10-14 09:17:18,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:18,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:18,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:22,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:22,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:23,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:23,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:17:23,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:17:23,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:17:23,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:23,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 09:17:23,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 09:17:23,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:23,813 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:23,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:23,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:23,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:23,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:17:23,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:23,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:23,845 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 09:17:23,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120876818] [2020-10-14 09:17:23,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:23,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:23,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243232582] [2020-10-14 09:17:23,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:23,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:23,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:23,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:23,847 INFO L87 Difference]: Start difference. First operand 12572 states and 19014 transitions. Second operand 4 states. [2020-10-14 09:17:24,062 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 09:17:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:26,157 INFO L93 Difference]: Finished difference Result 20874 states and 31566 transitions. [2020-10-14 09:17:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:26,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 09:17:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:26,177 INFO L225 Difference]: With dead ends: 20874 [2020-10-14 09:17:26,177 INFO L226 Difference]: Without dead ends: 11470 [2020-10-14 09:17:26,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11470 states. [2020-10-14 09:17:26,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11470 to 11468. [2020-10-14 09:17:26,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11468 states. [2020-10-14 09:17:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11468 states to 11468 states and 17362 transitions. [2020-10-14 09:17:26,753 INFO L78 Accepts]: Start accepts. Automaton has 11468 states and 17362 transitions. Word has length 150 [2020-10-14 09:17:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:26,753 INFO L479 AbstractCegarLoop]: Abstraction has 11468 states and 17362 transitions. [2020-10-14 09:17:26,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 11468 states and 17362 transitions. [2020-10-14 09:17:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:17:26,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:26,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:26,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:17:26,767 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2023976344, now seen corresponding path program 1 times [2020-10-14 09:17:26,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:26,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033962656] [2020-10-14 09:17:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:27,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:27,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:31,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:17:31,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:17:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:17:31,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:31,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:31,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:17:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 09:17:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:32,001 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:32,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:32,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:32,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:32,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:17:32,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:32,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:32,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:32,030 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 09:17:32,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033962656] [2020-10-14 09:17:32,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:32,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:32,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931427521] [2020-10-14 09:17:32,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:32,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:32,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:32,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:32,032 INFO L87 Difference]: Start difference. First operand 11468 states and 17362 transitions. Second operand 4 states. [2020-10-14 09:17:32,291 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 09:17:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:34,341 INFO L93 Difference]: Finished difference Result 19094 states and 28876 transitions. [2020-10-14 09:17:34,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:34,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 09:17:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:34,360 INFO L225 Difference]: With dead ends: 19094 [2020-10-14 09:17:34,360 INFO L226 Difference]: Without dead ends: 10498 [2020-10-14 09:17:34,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10498 states. [2020-10-14 09:17:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10498 to 10496. [2020-10-14 09:17:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10496 states. [2020-10-14 09:17:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10496 states to 10496 states and 15886 transitions. [2020-10-14 09:17:34,793 INFO L78 Accepts]: Start accepts. Automaton has 10496 states and 15886 transitions. Word has length 150 [2020-10-14 09:17:34,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:34,793 INFO L479 AbstractCegarLoop]: Abstraction has 10496 states and 15886 transitions. [2020-10-14 09:17:34,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 10496 states and 15886 transitions. [2020-10-14 09:17:34,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:17:34,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:34,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:34,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:17:34,804 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash -219233322, now seen corresponding path program 1 times [2020-10-14 09:17:34,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:34,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427150359] [2020-10-14 09:17:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:34,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:35,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:35,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:35,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:36,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:36,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:39,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:39,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:17:39,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:17:39,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:17:39,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:39,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 09:17:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:17:39,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:40,027 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:40,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:40,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:17:40,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:40,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:40,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:40,058 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 09:17:40,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427150359] [2020-10-14 09:17:40,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:40,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:40,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360480177] [2020-10-14 09:17:40,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:40,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:40,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:40,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:40,060 INFO L87 Difference]: Start difference. First operand 10496 states and 15886 transitions. Second operand 4 states. [2020-10-14 09:17:40,279 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 09:17:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:42,466 INFO L93 Difference]: Finished difference Result 17480 states and 26423 transitions. [2020-10-14 09:17:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:42,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 09:17:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:42,475 INFO L225 Difference]: With dead ends: 17480 [2020-10-14 09:17:42,476 INFO L226 Difference]: Without dead ends: 9575 [2020-10-14 09:17:42,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2020-10-14 09:17:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 9573. [2020-10-14 09:17:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9573 states. [2020-10-14 09:17:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9573 states to 9573 states and 14470 transitions. [2020-10-14 09:17:42,873 INFO L78 Accepts]: Start accepts. Automaton has 9573 states and 14470 transitions. Word has length 150 [2020-10-14 09:17:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:42,874 INFO L479 AbstractCegarLoop]: Abstraction has 9573 states and 14470 transitions. [2020-10-14 09:17:42,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 9573 states and 14470 transitions. [2020-10-14 09:17:42,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:17:42,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:42,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:42,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:17:42,881 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1084647526, now seen corresponding path program 1 times [2020-10-14 09:17:42,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:42,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381121117] [2020-10-14 09:17:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:42,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:42,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:44,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:44,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:44,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:44,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:45,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:45,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:45,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:45,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:47,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:47,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:17:47,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-14 09:17:47,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:17:47,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:47,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:17:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:17:47,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 09:17:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:48,140 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:48,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:48,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:48,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:48,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:17:48,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:48,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:48,237 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 09:17:48,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381121117] [2020-10-14 09:17:48,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:48,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:17:48,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517553406] [2020-10-14 09:17:48,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:17:48,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:48,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:17:48,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:17:48,239 INFO L87 Difference]: Start difference. First operand 9573 states and 14470 transitions. Second operand 4 states. [2020-10-14 09:17:48,457 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 09:17:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:50,518 INFO L93 Difference]: Finished difference Result 17775 states and 26900 transitions. [2020-10-14 09:17:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:17:50,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 09:17:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:50,531 INFO L225 Difference]: With dead ends: 17775 [2020-10-14 09:17:50,531 INFO L226 Difference]: Without dead ends: 9450 [2020-10-14 09:17:50,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9450 states. [2020-10-14 09:17:50,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9450 to 9448. [2020-10-14 09:17:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9448 states. [2020-10-14 09:17:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9448 states to 9448 states and 14287 transitions. [2020-10-14 09:17:50,882 INFO L78 Accepts]: Start accepts. Automaton has 9448 states and 14287 transitions. Word has length 150 [2020-10-14 09:17:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:50,882 INFO L479 AbstractCegarLoop]: Abstraction has 9448 states and 14287 transitions. [2020-10-14 09:17:50,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:17:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 9448 states and 14287 transitions. [2020-10-14 09:17:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:17:50,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:50,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:50,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:17:50,889 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:50,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1069746320, now seen corresponding path program 1 times [2020-10-14 09:17:50,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:50,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908225854] [2020-10-14 09:17:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:50,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:53,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:55,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:17:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:56,154 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:17:56,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:17:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:56,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:17:56,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:17:56,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:17:56,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:17:56,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:17:56,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:17:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:17:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:17:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:17:56,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:17:56,190 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 09:17:56,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908225854] [2020-10-14 09:17:56,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:17:56,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:17:56,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532288713] [2020-10-14 09:17:56,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:17:56,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:17:56,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:17:56,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:17:56,193 INFO L87 Difference]: Start difference. First operand 9448 states and 14287 transitions. Second operand 5 states. [2020-10-14 09:17:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:17:58,271 INFO L93 Difference]: Finished difference Result 12362 states and 18698 transitions. [2020-10-14 09:17:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:17:58,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-14 09:17:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:17:58,286 INFO L225 Difference]: With dead ends: 12362 [2020-10-14 09:17:58,286 INFO L226 Difference]: Without dead ends: 12360 [2020-10-14 09:17:58,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:17:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12360 states. [2020-10-14 09:17:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12360 to 9512. [2020-10-14 09:17:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9512 states. [2020-10-14 09:17:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 14351 transitions. [2020-10-14 09:17:58,645 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 14351 transitions. Word has length 150 [2020-10-14 09:17:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:17:58,645 INFO L479 AbstractCegarLoop]: Abstraction has 9512 states and 14351 transitions. [2020-10-14 09:17:58,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:17:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 14351 transitions. [2020-10-14 09:17:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 09:17:58,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:17:58,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:17:58,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:17:58,653 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:17:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:17:58,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1207222518, now seen corresponding path program 1 times [2020-10-14 09:17:58,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:17:58,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038382634] [2020-10-14 09:17:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:17:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:17:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:58,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:58,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:17:59,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:01,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:02,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:03,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:03,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 09:18:03,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-14 09:18:03,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 09:18:03,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:03,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:03,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:18:03,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:18:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 09:18:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:04,103 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:18:04,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:18:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:04,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:04,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:18:04,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:18:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:18:04,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:04,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:18:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:18:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:18:04,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:04,155 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 09:18:04,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038382634] [2020-10-14 09:18:04,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:18:04,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:18:04,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825394981] [2020-10-14 09:18:04,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:18:04,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:18:04,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:18:04,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:18:04,156 INFO L87 Difference]: Start difference. First operand 9512 states and 14351 transitions. Second operand 6 states. [2020-10-14 09:18:04,370 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 09:18:07,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:18:07,955 INFO L93 Difference]: Finished difference Result 30506 states and 46041 transitions. [2020-10-14 09:18:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:18:07,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-10-14 09:18:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:18:07,983 INFO L225 Difference]: With dead ends: 30506 [2020-10-14 09:18:07,983 INFO L226 Difference]: Without dead ends: 21815 [2020-10-14 09:18:08,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:18:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21815 states. [2020-10-14 09:18:08,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21815 to 21809. [2020-10-14 09:18:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21809 states. [2020-10-14 09:18:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21809 states to 21809 states and 32762 transitions. [2020-10-14 09:18:08,811 INFO L78 Accepts]: Start accepts. Automaton has 21809 states and 32762 transitions. Word has length 151 [2020-10-14 09:18:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:18:08,811 INFO L479 AbstractCegarLoop]: Abstraction has 21809 states and 32762 transitions. [2020-10-14 09:18:08,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:18:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 21809 states and 32762 transitions. [2020-10-14 09:18:08,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:18:08,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:18:08,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:08,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:18:08,824 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:18:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:18:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash -757526848, now seen corresponding path program 1 times [2020-10-14 09:18:08,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:18:08,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17055652] [2020-10-14 09:18:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:18:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:08,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:08,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:10,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:11,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:11,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:13,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:18:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-14 09:18:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 09:18:13,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:13,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:18:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 09:18:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 09:18:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:14,074 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:18:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:18:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:14,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:14,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:18:14,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:18:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:18:14,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:14,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:18:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:18:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:18:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:14,110 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 09:18:14,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17055652] [2020-10-14 09:18:14,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:18:14,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:18:14,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841970206] [2020-10-14 09:18:14,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:18:14,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:18:14,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:18:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:18:14,112 INFO L87 Difference]: Start difference. First operand 21809 states and 32762 transitions. Second operand 4 states. [2020-10-14 09:18:14,332 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 09:18:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:18:17,276 INFO L93 Difference]: Finished difference Result 63179 states and 94774 transitions. [2020-10-14 09:18:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:18:17,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 09:18:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:18:17,321 INFO L225 Difference]: With dead ends: 63179 [2020-10-14 09:18:17,321 INFO L226 Difference]: Without dead ends: 41539 [2020-10-14 09:18:17,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:18:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41539 states. [2020-10-14 09:18:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41539 to 41530. [2020-10-14 09:18:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41530 states. [2020-10-14 09:18:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41530 states to 41530 states and 61907 transitions. [2020-10-14 09:18:19,105 INFO L78 Accepts]: Start accepts. Automaton has 41530 states and 61907 transitions. Word has length 152 [2020-10-14 09:18:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:18:19,105 INFO L479 AbstractCegarLoop]: Abstraction has 41530 states and 61907 transitions. [2020-10-14 09:18:19,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:18:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 41530 states and 61907 transitions. [2020-10-14 09:18:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:18:19,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:18:19,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:19,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:18:19,132 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:18:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:18:19,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2037543168, now seen corresponding path program 1 times [2020-10-14 09:18:19,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:18:19,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474879044] [2020-10-14 09:18:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:18:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:19,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:20,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:22,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:22,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:24,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:24,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:18:24,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-14 09:18:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:18:24,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:24,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:18:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:18:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 09:18:24,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:24,375 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:18:24,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:18:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:24,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:24,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:18:24,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:18:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:18:24,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:24,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:18:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:18:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:18:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:24,413 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 09:18:24,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474879044] [2020-10-14 09:18:24,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:18:24,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:18:24,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755884154] [2020-10-14 09:18:24,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:18:24,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:18:24,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:18:24,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:18:24,415 INFO L87 Difference]: Start difference. First operand 41530 states and 61907 transitions. Second operand 4 states. [2020-10-14 09:18:24,629 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 09:18:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:18:29,074 INFO L93 Difference]: Finished difference Result 118518 states and 175991 transitions. [2020-10-14 09:18:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:18:29,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 09:18:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:18:30,550 INFO L225 Difference]: With dead ends: 118518 [2020-10-14 09:18:30,550 INFO L226 Difference]: Without dead ends: 77559 [2020-10-14 09:18:30,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:18:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77559 states. [2020-10-14 09:18:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77559 to 77536. [2020-10-14 09:18:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77536 states. [2020-10-14 09:18:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77536 states to 77536 states and 114120 transitions. [2020-10-14 09:18:33,848 INFO L78 Accepts]: Start accepts. Automaton has 77536 states and 114120 transitions. Word has length 152 [2020-10-14 09:18:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:18:33,848 INFO L479 AbstractCegarLoop]: Abstraction has 77536 states and 114120 transitions. [2020-10-14 09:18:33,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:18:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 77536 states and 114120 transitions. [2020-10-14 09:18:33,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:18:33,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:18:33,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:33,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:18:33,883 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:18:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:18:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash 559092319, now seen corresponding path program 1 times [2020-10-14 09:18:33,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:18:33,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101689569] [2020-10-14 09:18:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:18:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:35,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:36,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:36,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:38,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:38,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:38,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:38,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:18:38,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-14 09:18:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:18:38,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:38,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:18:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 09:18:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 09:18:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:39,116 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:18:39,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:18:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:39,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:18:39,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:18:39,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:18:39,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:18:39,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:18:39,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:18:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:18:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:18:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:18:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:18:39,153 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 09:18:39,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101689569] [2020-10-14 09:18:39,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:18:39,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:18:39,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611540124] [2020-10-14 09:18:39,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:18:39,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:18:39,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:18:39,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:18:39,154 INFO L87 Difference]: Start difference. First operand 77536 states and 114120 transitions. Second operand 4 states. [2020-10-14 09:18:39,376 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 09:18:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:18:46,712 INFO L93 Difference]: Finished difference Result 219796 states and 321775 transitions. [2020-10-14 09:18:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:18:46,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 09:18:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:18:46,905 INFO L225 Difference]: With dead ends: 219796 [2020-10-14 09:18:46,905 INFO L226 Difference]: Without dead ends: 143750 [2020-10-14 09:18:46,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:18:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143750 states. [2020-10-14 09:18:55,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143750 to 143685. [2020-10-14 09:18:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143685 states. [2020-10-14 09:18:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143685 states to 143685 states and 208246 transitions. [2020-10-14 09:18:55,875 INFO L78 Accepts]: Start accepts. Automaton has 143685 states and 208246 transitions. Word has length 152 [2020-10-14 09:18:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:18:55,875 INFO L479 AbstractCegarLoop]: Abstraction has 143685 states and 208246 transitions. [2020-10-14 09:18:55,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:18:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand 143685 states and 208246 transitions. [2020-10-14 09:18:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:18:55,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:18:55,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:18:55,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:18:55,936 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:18:55,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:18:55,936 INFO L82 PathProgramCache]: Analyzing trace with hash 72256488, now seen corresponding path program 1 times [2020-10-14 09:18:55,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:18:55,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546539737] [2020-10-14 09:18:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:18:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:18:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:57,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:57,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:57,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:57,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:18:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:00,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:00,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 37 [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 09:19:00,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:19:01,174 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:19:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:01,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:01,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:01,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:01,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:19:01,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:01,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:19:01,209 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 09:19:01,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546539737] [2020-10-14 09:19:01,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:01,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:01,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596475752] [2020-10-14 09:19:01,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:01,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:01,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:01,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:01,211 INFO L87 Difference]: Start difference. First operand 143685 states and 208246 transitions. Second operand 4 states. [2020-10-14 09:19:01,424 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-14 09:19:15,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:19:15,692 INFO L93 Difference]: Finished difference Result 401779 states and 577860 transitions. [2020-10-14 09:19:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:19:15,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 09:19:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:19:18,442 INFO L225 Difference]: With dead ends: 401779 [2020-10-14 09:19:18,443 INFO L226 Difference]: Without dead ends: 262229 [2020-10-14 09:19:18,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:19:18,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262229 states. [2020-10-14 09:19:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262229 to 261719. [2020-10-14 09:19:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261719 states. [2020-10-14 09:19:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261719 states to 261719 states and 372222 transitions. [2020-10-14 09:19:34,769 INFO L78 Accepts]: Start accepts. Automaton has 261719 states and 372222 transitions. Word has length 152 [2020-10-14 09:19:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:19:34,770 INFO L479 AbstractCegarLoop]: Abstraction has 261719 states and 372222 transitions. [2020-10-14 09:19:34,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:19:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 261719 states and 372222 transitions. [2020-10-14 09:19:34,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:19:34,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:19:34,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:19:34,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:19:34,886 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:19:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:19:34,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1363239477, now seen corresponding path program 1 times [2020-10-14 09:19:34,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:19:34,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291712255] [2020-10-14 09:19:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:19:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:34,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:35,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:37,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:37,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:38,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:39,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:39,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:19:39,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 36 [2020-10-14 09:19:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:19:39,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:39,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:19:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 09:19:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 09:19:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:19:40,129 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 09:19:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:19:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:19:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:19:40,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:19:40,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:19:40,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:19:40,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:19:40,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:19:40,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:19:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:19:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:19:40,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:19:40,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:19:40,167 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 09:19:40,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291712255] [2020-10-14 09:19:40,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:19:40,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:19:40,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989581275] [2020-10-14 09:19:40,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:19:40,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:19:40,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:19:40,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:19:40,169 INFO L87 Difference]: Start difference. First operand 261719 states and 372222 transitions. Second operand 4 states. [2020-10-14 09:19:40,387 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 161