/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=BIGGEST --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_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:22:03,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:22:03,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:22:03,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:22:03,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:22:03,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:22:03,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:22:03,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:22:03,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:22:03,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:22:03,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:22:03,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:22:03,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:22:03,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:22:03,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:22:03,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:22:03,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:22:03,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:22:03,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:22:03,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:22:03,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:22:03,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:22:03,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:22:03,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:22:03,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:22:03,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:22:03,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:22:03,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:22:03,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:22:03,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:22:03,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:22:03,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:22:03,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:22:03,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:22:03,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:22:03,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:22:03,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:22:03,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:22:03,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:22:03,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:22:03,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:22:03,187 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 [2020-10-12 20:22:03,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:22:03,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:22:03,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:22:03,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:22:03,225 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:22:03,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:22:03,225 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:22:03,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:22:03,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:22:03,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:22:03,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:22:03,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:22:03,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:22:03,227 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:22:03,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:22:03,228 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:22:03,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:22:03,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:22:03,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:22:03,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:22:03,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:22:03,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:22:03,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:22:03,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:22:03,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:22:03,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:22:03,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:22:03,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:22:03,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:22:03,230 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:22:03,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:22:03,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:22:03,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:22:03,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:22:03,592 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:22:03,593 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:22:03,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910ce7ddd/3af08798c2d24ffe8cbb0bd807808d9e/FLAGdaee24191 [2020-10-12 20:22:04,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:22:04,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:22:04,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910ce7ddd/3af08798c2d24ffe8cbb0bd807808d9e/FLAGdaee24191 [2020-10-12 20:22:04,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/910ce7ddd/3af08798c2d24ffe8cbb0bd807808d9e [2020-10-12 20:22:04,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:22:04,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:22:04,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:22:04,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:22:04,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:22:04,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:22:04" (1/1) ... [2020-10-12 20:22:04,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:04, skipping insertion in model container [2020-10-12 20:22:04,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:22:04" (1/1) ... [2020-10-12 20:22:04,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:22:04,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:22:05,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:22:05,467 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:22:05,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:22:05,993 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:22:05,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05 WrapperNode [2020-10-12 20:22:05,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:22:05,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:22:05,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:22:05,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:22:06,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (1/1) ... [2020-10-12 20:22:06,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (1/1) ... [2020-10-12 20:22:06,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (1/1) ... [2020-10-12 20:22:06,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (1/1) ... [2020-10-12 20:22:06,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (1/1) ... [2020-10-12 20:22:06,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (1/1) ... [2020-10-12 20:22:06,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (1/1) ... [2020-10-12 20:22:06,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:22:06,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:22:06,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:22:06,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:22:06,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (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 [2020-10-12 20:22:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:22:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:22:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:22:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:22:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:22:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:22:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:22:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:22:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:22:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:22:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:22:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:22:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:22:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:22:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:22:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:22:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:22:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:22:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:22:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:22:06,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:22:08,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:22:08,490 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:22:08,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:22:08 BoogieIcfgContainer [2020-10-12 20:22:08,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:22:08,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:22:08,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:22:08,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:22:08,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:22:04" (1/3) ... [2020-10-12 20:22:08,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73485248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:22:08, skipping insertion in model container [2020-10-12 20:22:08,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:22:05" (2/3) ... [2020-10-12 20:22:08,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73485248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:22:08, skipping insertion in model container [2020-10-12 20:22:08,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:22:08" (3/3) ... [2020-10-12 20:22:08,507 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-12 20:22:08,521 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:22:08,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-12 20:22:08,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-12 20:22:08,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:22:08,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:22:08,570 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:22:08,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:22:08,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:22:08,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:22:08,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:22:08,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:22:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states. [2020-10-12 20:22:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-12 20:22:08,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:08,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:08,627 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1554818398, now seen corresponding path program 1 times [2020-10-12 20:22:08,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:08,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20997871] [2020-10-12 20:22:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:11,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:13,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:14,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-12 20:22:14,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:22:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-12 20:22:14,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:14,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 20:22:14,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:22:15,520 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:22:15,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:15,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:15,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:15,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:22:15,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:15,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20997871] [2020-10-12 20:22:15,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:15,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:15,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511971887] [2020-10-12 20:22:15,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:15,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:15,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:15,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:15,895 INFO L87 Difference]: Start difference. First operand 676 states. Second operand 5 states. [2020-10-12 20:22:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:22,682 INFO L93 Difference]: Finished difference Result 1928 states and 3439 transitions. [2020-10-12 20:22:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:22:22,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-12 20:22:22,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:22,712 INFO L225 Difference]: With dead ends: 1928 [2020-10-12 20:22:22,712 INFO L226 Difference]: Without dead ends: 1291 [2020-10-12 20:22:22,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:22:22,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-10-12 20:22:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1252. [2020-10-12 20:22:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2020-10-12 20:22:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1952 transitions. [2020-10-12 20:22:22,845 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1952 transitions. Word has length 247 [2020-10-12 20:22:22,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:22,846 INFO L479 AbstractCegarLoop]: Abstraction has 1252 states and 1952 transitions. [2020-10-12 20:22:22,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1952 transitions. [2020-10-12 20:22:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-12 20:22:22,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:22,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:22,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:22:22,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:22,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1295225377, now seen corresponding path program 1 times [2020-10-12 20:22:22,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:22,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904053065] [2020-10-12 20:22:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:23,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:23,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:23,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:23,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:28,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:28,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-12 20:22:28,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:22:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:22:28,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-12 20:22:28,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:28,598 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:22:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:28,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:28,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:28,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:28,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 20:22:28,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:28,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:28,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:28,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:28,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904053065] [2020-10-12 20:22:28,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:28,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189027196] [2020-10-12 20:22:28,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:28,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:28,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:28,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:28,775 INFO L87 Difference]: Start difference. First operand 1252 states and 1952 transitions. Second operand 5 states. [2020-10-12 20:22:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:34,497 INFO L93 Difference]: Finished difference Result 3621 states and 5623 transitions. [2020-10-12 20:22:34,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:34,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-12 20:22:34,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:34,513 INFO L225 Difference]: With dead ends: 3621 [2020-10-12 20:22:34,513 INFO L226 Difference]: Without dead ends: 2446 [2020-10-12 20:22:34,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:22:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2020-10-12 20:22:34,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2414. [2020-10-12 20:22:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2414 states. [2020-10-12 20:22:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3741 transitions. [2020-10-12 20:22:34,625 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3741 transitions. Word has length 249 [2020-10-12 20:22:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:34,626 INFO L479 AbstractCegarLoop]: Abstraction has 2414 states and 3741 transitions. [2020-10-12 20:22:34,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3741 transitions. [2020-10-12 20:22:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-12 20:22:34,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:34,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:34,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:22:34,636 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:34,636 INFO L82 PathProgramCache]: Analyzing trace with hash -562877255, now seen corresponding path program 1 times [2020-10-12 20:22:34,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:34,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662394501] [2020-10-12 20:22:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:35,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:38,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:39,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-12 20:22:39,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:22:39,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:22:39,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:39,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 20:22:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:40,496 WARN L193 SmtUtils]: Spent 551.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:22:40,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:40,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:40,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 20:22:40,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:40,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:40,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:40,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:22:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:40,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662394501] [2020-10-12 20:22:40,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:40,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:40,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829852242] [2020-10-12 20:22:40,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:40,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:40,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:40,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:40,906 INFO L87 Difference]: Start difference. First operand 2414 states and 3741 transitions. Second operand 5 states. [2020-10-12 20:22:47,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:47,711 INFO L93 Difference]: Finished difference Result 6996 states and 10793 transitions. [2020-10-12 20:22:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:47,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2020-10-12 20:22:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:47,737 INFO L225 Difference]: With dead ends: 6996 [2020-10-12 20:22:47,737 INFO L226 Difference]: Without dead ends: 4693 [2020-10-12 20:22:47,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:22:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2020-10-12 20:22:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 4648. [2020-10-12 20:22:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4648 states. [2020-10-12 20:22:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 7148 transitions. [2020-10-12 20:22:47,992 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 7148 transitions. Word has length 251 [2020-10-12 20:22:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:47,993 INFO L479 AbstractCegarLoop]: Abstraction has 4648 states and 7148 transitions. [2020-10-12 20:22:47,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 7148 transitions. [2020-10-12 20:22:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-12 20:22:48,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:48,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:48,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:22:48,009 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:48,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:48,009 INFO L82 PathProgramCache]: Analyzing trace with hash -349898394, now seen corresponding path program 1 times [2020-10-12 20:22:48,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:48,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559187748] [2020-10-12 20:22:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:48,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:48,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:49,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:49,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:50,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:50,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:53,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:53,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-12 20:22:53,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:22:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 20:22:53,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:53,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:53,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 20:22:53,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:53,801 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:22:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:53,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:53,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:53,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:22:53,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:53,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:54,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559187748] [2020-10-12 20:22:54,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:54,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:54,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592886165] [2020-10-12 20:22:54,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:54,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:54,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:54,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:54,019 INFO L87 Difference]: Start difference. First operand 4648 states and 7148 transitions. Second operand 5 states. [2020-10-12 20:22:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:59,763 INFO L93 Difference]: Finished difference Result 13751 states and 21122 transitions. [2020-10-12 20:22:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:59,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-12 20:22:59,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:59,806 INFO L225 Difference]: With dead ends: 13751 [2020-10-12 20:22:59,806 INFO L226 Difference]: Without dead ends: 9128 [2020-10-12 20:22:59,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:22:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9128 states. [2020-10-12 20:23:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9128 to 9089. [2020-10-12 20:23:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9089 states. [2020-10-12 20:23:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9089 states to 9089 states and 13881 transitions. [2020-10-12 20:23:00,298 INFO L78 Accepts]: Start accepts. Automaton has 9089 states and 13881 transitions. Word has length 253 [2020-10-12 20:23:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:00,298 INFO L479 AbstractCegarLoop]: Abstraction has 9089 states and 13881 transitions. [2020-10-12 20:23:00,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 9089 states and 13881 transitions. [2020-10-12 20:23:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-12 20:23:00,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:00,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:00,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:23:00,317 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:00,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:00,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1298174011, now seen corresponding path program 1 times [2020-10-12 20:23:00,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:00,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539690238] [2020-10-12 20:23:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:00,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:00,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:00,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:01,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-12 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:05,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:05,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 20:23:05,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:06,015 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:23:06,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:06,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:06,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:06,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:06,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:06,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:23:06,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:06,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539690238] [2020-10-12 20:23:06,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:06,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:06,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042807781] [2020-10-12 20:23:06,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:06,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:06,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:06,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:06,150 INFO L87 Difference]: Start difference. First operand 9089 states and 13881 transitions. Second operand 5 states. [2020-10-12 20:23:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:12,489 INFO L93 Difference]: Finished difference Result 26106 states and 39669 transitions. [2020-10-12 20:23:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:12,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 255 [2020-10-12 20:23:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:12,549 INFO L225 Difference]: With dead ends: 26106 [2020-10-12 20:23:12,549 INFO L226 Difference]: Without dead ends: 17817 [2020-10-12 20:23:12,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:12,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17817 states. [2020-10-12 20:23:13,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17817 to 17792. [2020-10-12 20:23:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17792 states. [2020-10-12 20:23:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17792 states to 17792 states and 26984 transitions. [2020-10-12 20:23:13,373 INFO L78 Accepts]: Start accepts. Automaton has 17792 states and 26984 transitions. Word has length 255 [2020-10-12 20:23:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:13,373 INFO L479 AbstractCegarLoop]: Abstraction has 17792 states and 26984 transitions. [2020-10-12 20:23:13,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 17792 states and 26984 transitions. [2020-10-12 20:23:13,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-12 20:23:13,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:13,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:13,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:23:13,411 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:13,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:13,411 INFO L82 PathProgramCache]: Analyzing trace with hash 440328651, now seen corresponding path program 1 times [2020-10-12 20:23:13,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:13,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282405166] [2020-10-12 20:23:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:13,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:14,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:18,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:18,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-12 20:23:18,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:23:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:23:18,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 20:23:18,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:23:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:19,191 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:23:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:19,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:19,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:19,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:19,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 20:23:19,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:19,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282405166] [2020-10-12 20:23:19,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:19,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:19,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739850415] [2020-10-12 20:23:19,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:19,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:19,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:19,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:19,364 INFO L87 Difference]: Start difference. First operand 17792 states and 26984 transitions. Second operand 5 states. [2020-10-12 20:23:27,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:27,316 INFO L93 Difference]: Finished difference Result 48796 states and 73096 transitions. [2020-10-12 20:23:27,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:27,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2020-10-12 20:23:27,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:27,389 INFO L225 Difference]: With dead ends: 48796 [2020-10-12 20:23:27,390 INFO L226 Difference]: Without dead ends: 34228 [2020-10-12 20:23:27,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34228 states. [2020-10-12 20:23:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34228 to 20108. [2020-10-12 20:23:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20108 states. [2020-10-12 20:23:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20108 states to 20108 states and 30984 transitions. [2020-10-12 20:23:28,636 INFO L78 Accepts]: Start accepts. Automaton has 20108 states and 30984 transitions. Word has length 257 [2020-10-12 20:23:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:28,637 INFO L479 AbstractCegarLoop]: Abstraction has 20108 states and 30984 transitions. [2020-10-12 20:23:28,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 20108 states and 30984 transitions. [2020-10-12 20:23:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 20:23:28,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:28,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:28,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:23:28,664 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:28,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1280908396, now seen corresponding path program 1 times [2020-10-12 20:23:28,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:28,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151576856] [2020-10-12 20:23:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:28,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:28,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:28,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:29,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:32,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-12 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 20:23:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:34,250 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:23:34,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:34,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:34,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:34,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:23:34,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:34,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151576856] [2020-10-12 20:23:34,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:34,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:34,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749519245] [2020-10-12 20:23:34,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:34,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:34,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:34,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:34,375 INFO L87 Difference]: Start difference. First operand 20108 states and 30984 transitions. Second operand 5 states. [2020-10-12 20:23:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:41,685 INFO L93 Difference]: Finished difference Result 58189 states and 89240 transitions. [2020-10-12 20:23:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:41,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-12 20:23:41,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:41,765 INFO L225 Difference]: With dead ends: 58189 [2020-10-12 20:23:41,765 INFO L226 Difference]: Without dead ends: 38329 [2020-10-12 20:23:41,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38329 states. [2020-10-12 20:23:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38329 to 38306. [2020-10-12 20:23:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38306 states. [2020-10-12 20:23:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38306 states to 38306 states and 58264 transitions. [2020-10-12 20:23:43,547 INFO L78 Accepts]: Start accepts. Automaton has 38306 states and 58264 transitions. Word has length 258 [2020-10-12 20:23:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:43,547 INFO L479 AbstractCegarLoop]: Abstraction has 38306 states and 58264 transitions. [2020-10-12 20:23:43,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:43,548 INFO L276 IsEmpty]: Start isEmpty. Operand 38306 states and 58264 transitions. [2020-10-12 20:23:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-12 20:23:44,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:44,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:44,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:23:44,613 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:44,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:44,614 INFO L82 PathProgramCache]: Analyzing trace with hash -2028418100, now seen corresponding path program 1 times [2020-10-12 20:23:44,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:44,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751278497] [2020-10-12 20:23:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:44,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:44,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:44,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:44,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:44,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:45,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:45,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:49,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:49,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-12 20:23:49,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:23:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:23:49,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 20:23:49,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:23:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:50,165 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:23:50,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:50,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:50,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:50,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:23:50,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:50,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751278497] [2020-10-12 20:23:50,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:50,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:50,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732310482] [2020-10-12 20:23:50,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:50,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:50,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:50,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:50,238 INFO L87 Difference]: Start difference. First operand 38306 states and 58264 transitions. Second operand 5 states. [2020-10-12 20:23:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:55,477 INFO L93 Difference]: Finished difference Result 66578 states and 99372 transitions. [2020-10-12 20:23:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:55,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-12 20:23:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:55,562 INFO L225 Difference]: With dead ends: 66578 [2020-10-12 20:23:55,562 INFO L226 Difference]: Without dead ends: 38306 [2020-10-12 20:23:55,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:23:55,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38306 states. [2020-10-12 20:23:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38306 to 38306. [2020-10-12 20:23:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38306 states. [2020-10-12 20:23:57,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38306 states to 38306 states and 58032 transitions. [2020-10-12 20:23:57,429 INFO L78 Accepts]: Start accepts. Automaton has 38306 states and 58032 transitions. Word has length 261 [2020-10-12 20:23:57,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:57,430 INFO L479 AbstractCegarLoop]: Abstraction has 38306 states and 58032 transitions. [2020-10-12 20:23:57,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:57,430 INFO L276 IsEmpty]: Start isEmpty. Operand 38306 states and 58032 transitions. [2020-10-12 20:23:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 20:23:57,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:57,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:57,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:23:57,462 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:57,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:57,462 INFO L82 PathProgramCache]: Analyzing trace with hash -797342389, now seen corresponding path program 1 times [2020-10-12 20:23:57,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:57,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978562476] [2020-10-12 20:23:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:57,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:01,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:02,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:02,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-12 20:24:02,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:24:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:24:02,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-12 20:24:02,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:24:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:03,000 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:24:03,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:03,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:03,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:03,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:03,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:24:03,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:03,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:03,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978562476] [2020-10-12 20:24:03,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:03,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:03,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346387409] [2020-10-12 20:24:03,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:03,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:03,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:03,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:03,091 INFO L87 Difference]: Start difference. First operand 38306 states and 58032 transitions. Second operand 5 states. [2020-10-12 20:24:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:12,584 INFO L93 Difference]: Finished difference Result 88378 states and 131870 transitions. [2020-10-12 20:24:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:12,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-12 20:24:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:12,656 INFO L225 Difference]: With dead ends: 88378 [2020-10-12 20:24:12,656 INFO L226 Difference]: Without dead ends: 59346 [2020-10-12 20:24:12,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59346 states. [2020-10-12 20:24:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59346 to 40836. [2020-10-12 20:24:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40836 states. [2020-10-12 20:24:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40836 states to 40836 states and 62588 transitions. [2020-10-12 20:24:14,920 INFO L78 Accepts]: Start accepts. Automaton has 40836 states and 62588 transitions. Word has length 262 [2020-10-12 20:24:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:14,921 INFO L479 AbstractCegarLoop]: Abstraction has 40836 states and 62588 transitions. [2020-10-12 20:24:14,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:14,921 INFO L276 IsEmpty]: Start isEmpty. Operand 40836 states and 62588 transitions. [2020-10-12 20:24:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-12 20:24:14,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:14,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:24:14,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:24:14,961 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:14,961 INFO L82 PathProgramCache]: Analyzing trace with hash -270803818, now seen corresponding path program 1 times [2020-10-12 20:24:14,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:14,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122385613] [2020-10-12 20:24:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:20,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-12 20:24:20,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:24:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 20:24:20,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 20:24:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:20,513 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:24:20,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:20,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:20,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:20,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:20,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:20,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:24:20,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:20,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:20,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:20,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:20,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122385613] [2020-10-12 20:24:20,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:20,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:20,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405978858] [2020-10-12 20:24:20,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:20,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:20,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:20,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:20,612 INFO L87 Difference]: Start difference. First operand 40836 states and 62588 transitions. Second operand 5 states. [2020-10-12 20:24:29,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:29,867 INFO L93 Difference]: Finished difference Result 120003 states and 183442 transitions. [2020-10-12 20:24:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:29,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-12 20:24:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:29,950 INFO L225 Difference]: With dead ends: 120003 [2020-10-12 20:24:29,950 INFO L226 Difference]: Without dead ends: 80121 [2020-10-12 20:24:29,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80121 states. [2020-10-12 20:24:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80121 to 80107. [2020-10-12 20:24:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80107 states. [2020-10-12 20:24:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80107 states to 80107 states and 121525 transitions. [2020-10-12 20:24:34,247 INFO L78 Accepts]: Start accepts. Automaton has 80107 states and 121525 transitions. Word has length 262 [2020-10-12 20:24:34,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:24:34,247 INFO L479 AbstractCegarLoop]: Abstraction has 80107 states and 121525 transitions. [2020-10-12 20:24:34,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:24:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 80107 states and 121525 transitions. [2020-10-12 20:24:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-12 20:24:34,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:24:34,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:24:34,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:24:34,309 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:24:34,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:24:34,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2022521793, now seen corresponding path program 1 times [2020-10-12 20:24:34,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:24:34,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455977286] [2020-10-12 20:24:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:24:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:39,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:39,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:39,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:39,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 20:24:39,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:24:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 20:24:39,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:24:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:24:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 20:24:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:39,925 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:24:39,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:24:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:24:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:24:39,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:24:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:24:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:24:39,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:24:39,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:24:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:24:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:24:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:24:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:24:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:24:40,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455977286] [2020-10-12 20:24:40,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:24:40,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:24:40,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167769345] [2020-10-12 20:24:40,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:24:40,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:24:40,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:24:40,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:24:40,051 INFO L87 Difference]: Start difference. First operand 80107 states and 121525 transitions. Second operand 5 states. [2020-10-12 20:24:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:24:55,084 INFO L93 Difference]: Finished difference Result 220001 states and 333174 transitions. [2020-10-12 20:24:55,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:24:55,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-12 20:24:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:24:55,242 INFO L225 Difference]: With dead ends: 220001 [2020-10-12 20:24:55,242 INFO L226 Difference]: Without dead ends: 145396 [2020-10-12 20:24:55,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:24:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145396 states. [2020-10-12 20:25:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145396 to 144931. [2020-10-12 20:25:05,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144931 states. [2020-10-12 20:25:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144931 states to 144931 states and 219014 transitions. [2020-10-12 20:25:05,886 INFO L78 Accepts]: Start accepts. Automaton has 144931 states and 219014 transitions. Word has length 264 [2020-10-12 20:25:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:25:05,887 INFO L479 AbstractCegarLoop]: Abstraction has 144931 states and 219014 transitions. [2020-10-12 20:25:05,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:25:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 144931 states and 219014 transitions. [2020-10-12 20:25:05,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-12 20:25:05,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:25:06,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:25:06,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:25:06,000 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:25:06,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:25:06,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1757057225, now seen corresponding path program 1 times [2020-10-12 20:25:06,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:25:06,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212372629] [2020-10-12 20:25:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:25:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:06,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-12 20:25:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:25:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:25:11,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:25:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:25:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 20:25:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:11,573 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-12 20:25:11,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:25:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:25:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:25:11,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:25:11,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:25:11,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:25:11,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:25:11,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:25:11,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:25:11,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:25:11,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:25:11,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:25:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:25:11,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212372629] [2020-10-12 20:25:11,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:25:11,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:25:11,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597595431] [2020-10-12 20:25:11,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:25:11,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:25:11,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:25:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:25:11,676 INFO L87 Difference]: Start difference. First operand 144931 states and 219014 transitions. Second operand 5 states. [2020-10-12 20:25:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:25:36,888 INFO L93 Difference]: Finished difference Result 405609 states and 608782 transitions. [2020-10-12 20:25:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:25:36,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2020-10-12 20:25:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:25:37,198 INFO L225 Difference]: With dead ends: 405609 [2020-10-12 20:25:37,198 INFO L226 Difference]: Without dead ends: 271148 [2020-10-12 20:25:37,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:25:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271148 states.