/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=NARROWEST --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_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:52:19,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:52:19,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:52:19,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:52:19,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:52:19,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:52:19,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:52:19,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:52:19,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:52:19,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:52:19,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:52:19,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:52:19,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:52:19,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:52:19,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:52:19,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:52:19,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:52:19,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:52:19,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:52:19,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:52:19,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:52:19,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:52:19,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:52:19,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:52:19,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:52:19,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:52:19,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:52:19,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:52:19,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:52:19,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:52:19,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:52:19,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:52:19,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:52:19,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:52:19,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:52:19,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:52:19,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:52:19,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:52:19,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:52:19,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:52:19,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:52:19,190 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 [2020-10-13 13:52:19,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:52:19,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:52:19,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:52:19,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:52:19,214 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:52:19,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:52:19,215 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:52:19,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:52:19,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:52:19,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:52:19,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:52:19,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:52:19,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:52:19,216 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:52:19,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:52:19,217 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:52:19,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:52:19,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:52:19,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:52:19,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:52:19,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:52:19,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:52:19,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:52:19,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:52:19,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:52:19,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:52:19,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:52:19,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:52:19,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:52:19,219 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:52:19,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:52:19,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:52:19,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:52:19,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:52:19,530 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:52:19,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 13:52:19,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6c6d3924/4804c8b437774ee4aaeb98d3dd5fb1c3/FLAG8037f4ae2 [2020-10-13 13:52:20,172 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:52:20,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 13:52:20,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6c6d3924/4804c8b437774ee4aaeb98d3dd5fb1c3/FLAG8037f4ae2 [2020-10-13 13:52:20,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6c6d3924/4804c8b437774ee4aaeb98d3dd5fb1c3 [2020-10-13 13:52:20,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:52:20,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:52:20,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:52:20,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:52:20,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:52:20,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:52:20" (1/1) ... [2020-10-13 13:52:20,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fec4e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:20, skipping insertion in model container [2020-10-13 13:52:20,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:52:20" (1/1) ... [2020-10-13 13:52:20,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:52:20,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:52:21,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:52:21,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:52:21,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:52:21,615 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:52:21,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21 WrapperNode [2020-10-13 13:52:21,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:52:21,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:52:21,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:52:21,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:52:21,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (1/1) ... [2020-10-13 13:52:21,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (1/1) ... [2020-10-13 13:52:21,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (1/1) ... [2020-10-13 13:52:21,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (1/1) ... [2020-10-13 13:52:21,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (1/1) ... [2020-10-13 13:52:21,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (1/1) ... [2020-10-13 13:52:21,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (1/1) ... [2020-10-13 13:52:21,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:52:21,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:52:21,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:52:21,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:52:21,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (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 [2020-10-13 13:52:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:52:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:52:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:52:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:52:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:52:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:52:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:52:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:52:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:52:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:52:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:52:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:52:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:52:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:52:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:52:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:52:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:52:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:52:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:52:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:52:23,281 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:52:23,282 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:52:23,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:52:23 BoogieIcfgContainer [2020-10-13 13:52:23,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:52:23,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:52:23,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:52:23,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:52:23,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:52:20" (1/3) ... [2020-10-13 13:52:23,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23af1728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:52:23, skipping insertion in model container [2020-10-13 13:52:23,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:52:21" (2/3) ... [2020-10-13 13:52:23,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23af1728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:52:23, skipping insertion in model container [2020-10-13 13:52:23,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:52:23" (3/3) ... [2020-10-13 13:52:23,297 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 13:52:23,308 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:52:23,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-13 13:52:23,330 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-13 13:52:23,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:52:23,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:52:23,358 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:52:23,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:52:23,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:52:23,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:52:23,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:52:23,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:52:23,386 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states. [2020-10-13 13:52:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 13:52:23,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:23,404 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] [2020-10-13 13:52:23,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:23,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1668875299, now seen corresponding path program 1 times [2020-10-13 13:52:23,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:23,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72632975] [2020-10-13 13:52:23,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:28,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:28,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 13:52:28,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:52:28,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 13:52:28,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:52:28,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 13:52:28,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:52:29,495 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:52:29,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:29,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:29,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:29,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:29,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:52:29,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:29,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72632975] [2020-10-13 13:52:29,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:29,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:29,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464470753] [2020-10-13 13:52:29,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:29,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:29,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:29,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:29,614 INFO L87 Difference]: Start difference. First operand 371 states. Second operand 5 states. [2020-10-13 13:52:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:33,885 INFO L93 Difference]: Finished difference Result 1062 states and 1917 transitions. [2020-10-13 13:52:33,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:52:33,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-13 13:52:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:33,925 INFO L225 Difference]: With dead ends: 1062 [2020-10-13 13:52:33,926 INFO L226 Difference]: Without dead ends: 712 [2020-10-13 13:52:33,932 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 [2020-10-13 13:52:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-13 13:52:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 687. [2020-10-13 13:52:34,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-10-13 13:52:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 982 transitions. [2020-10-13 13:52:34,044 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 982 transitions. Word has length 140 [2020-10-13 13:52:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:34,045 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 982 transitions. [2020-10-13 13:52:34,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:34,045 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 982 transitions. [2020-10-13 13:52:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 13:52:34,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:34,051 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] [2020-10-13 13:52:34,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:52:34,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:34,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1344164743, now seen corresponding path program 1 times [2020-10-13 13:52:34,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:34,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377085045] [2020-10-13 13:52:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:34,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:34,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:34,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:35,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:39,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:39,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 13:52:39,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:52:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 13:52:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:52:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:52:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:52:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:39,416 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:52:39,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:39,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:39,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:39,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:39,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:52:39,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:39,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:39,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377085045] [2020-10-13 13:52:39,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:39,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:52:39,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521188130] [2020-10-13 13:52:39,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:52:39,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:39,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:52:39,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:52:39,475 INFO L87 Difference]: Start difference. First operand 687 states and 982 transitions. Second operand 4 states. [2020-10-13 13:52:42,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:42,525 INFO L93 Difference]: Finished difference Result 2015 states and 2874 transitions. [2020-10-13 13:52:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:52:42,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-10-13 13:52:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:42,535 INFO L225 Difference]: With dead ends: 2015 [2020-10-13 13:52:42,535 INFO L226 Difference]: Without dead ends: 1360 [2020-10-13 13:52:42,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:52:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-10-13 13:52:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 689. [2020-10-13 13:52:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-13 13:52:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 984 transitions. [2020-10-13 13:52:42,600 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 984 transitions. Word has length 141 [2020-10-13 13:52:42,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:42,601 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 984 transitions. [2020-10-13 13:52:42,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:52:42,601 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 984 transitions. [2020-10-13 13:52:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 13:52:42,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:42,605 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] [2020-10-13 13:52:42,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:52:42,605 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:42,606 INFO L82 PathProgramCache]: Analyzing trace with hash 833917347, now seen corresponding path program 1 times [2020-10-13 13:52:42,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:42,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475668945] [2020-10-13 13:52:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:42,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:42,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:43,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:44,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:47,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 13:52:47,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:52:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 13:52:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:47,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:52:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 13:52:47,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:47,981 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:52:47,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:47,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:47,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:47,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:52:47,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:47,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:48,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475668945] [2020-10-13 13:52:48,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:48,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:48,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481512618] [2020-10-13 13:52:48,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:48,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:48,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:48,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:48,041 INFO L87 Difference]: Start difference. First operand 689 states and 984 transitions. Second operand 5 states. [2020-10-13 13:52:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:51,040 INFO L93 Difference]: Finished difference Result 2006 states and 2858 transitions. [2020-10-13 13:52:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:51,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 13:52:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:51,051 INFO L225 Difference]: With dead ends: 2006 [2020-10-13 13:52:51,051 INFO L226 Difference]: Without dead ends: 1333 [2020-10-13 13:52:51,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-10-13 13:52:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1311. [2020-10-13 13:52:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-13 13:52:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1858 transitions. [2020-10-13 13:52:51,126 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1858 transitions. Word has length 142 [2020-10-13 13:52:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:51,126 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1858 transitions. [2020-10-13 13:52:51,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1858 transitions. [2020-10-13 13:52:51,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 13:52:51,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:51,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:52:51,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:52:51,132 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:51,133 INFO L82 PathProgramCache]: Analyzing trace with hash -406349154, now seen corresponding path program 1 times [2020-10-13 13:52:51,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:51,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493316067] [2020-10-13 13:52:51,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:51,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:51,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:51,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:51,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:52,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:53,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:54,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:56,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:56,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 13:52:56,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:52:56,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 13:52:56,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:56,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:52:56,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:52:56,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:56,567 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:52:56,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:56,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:56,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:52:56,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:52:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:56,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493316067] [2020-10-13 13:52:56,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:56,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:56,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743714824] [2020-10-13 13:52:56,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:56,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:56,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:56,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:56,648 INFO L87 Difference]: Start difference. First operand 1311 states and 1858 transitions. Second operand 5 states. [2020-10-13 13:52:58,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:58,221 INFO L93 Difference]: Finished difference Result 2284 states and 3227 transitions. [2020-10-13 13:52:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:58,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-13 13:52:58,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:58,227 INFO L225 Difference]: With dead ends: 2284 [2020-10-13 13:52:58,227 INFO L226 Difference]: Without dead ends: 1007 [2020-10-13 13:52:58,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-13 13:52:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1006. [2020-10-13 13:52:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-13 13:52:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1416 transitions. [2020-10-13 13:52:58,289 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1416 transitions. Word has length 142 [2020-10-13 13:52:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:58,290 INFO L479 AbstractCegarLoop]: Abstraction has 1006 states and 1416 transitions. [2020-10-13 13:52:58,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1416 transitions. [2020-10-13 13:52:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-13 13:52:58,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:58,293 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] [2020-10-13 13:52:58,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:52:58,294 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:58,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1087035515, now seen corresponding path program 1 times [2020-10-13 13:52:58,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:58,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947384211] [2020-10-13 13:52:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:58,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:58,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:00,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:02,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:03,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:03,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 13:53:03,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:53:03,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:53:03,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:53:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:53:03,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:53:03,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:03,714 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:53:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:03,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:03,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:03,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:03,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:53:03,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:03,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:03,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947384211] [2020-10-13 13:53:03,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:03,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:53:03,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371854019] [2020-10-13 13:53:03,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:53:03,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:03,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:53:03,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:03,807 INFO L87 Difference]: Start difference. First operand 1006 states and 1416 transitions. Second operand 5 states. [2020-10-13 13:53:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:06,985 INFO L93 Difference]: Finished difference Result 2888 states and 4048 transitions. [2020-10-13 13:53:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:06,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-13 13:53:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:06,997 INFO L225 Difference]: With dead ends: 2888 [2020-10-13 13:53:06,997 INFO L226 Difference]: Without dead ends: 1935 [2020-10-13 13:53:07,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:53:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-13 13:53:07,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1908. [2020-10-13 13:53:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1908 states. [2020-10-13 13:53:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2666 transitions. [2020-10-13 13:53:07,105 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2666 transitions. Word has length 147 [2020-10-13 13:53:07,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:07,106 INFO L479 AbstractCegarLoop]: Abstraction has 1908 states and 2666 transitions. [2020-10-13 13:53:07,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:53:07,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2666 transitions. [2020-10-13 13:53:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:53:07,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:07,110 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] [2020-10-13 13:53:07,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:53:07,110 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:07,111 INFO L82 PathProgramCache]: Analyzing trace with hash -354573527, now seen corresponding path program 1 times [2020-10-13 13:53:07,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:07,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532774461] [2020-10-13 13:53:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:07,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:07,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:12,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:12,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 13:53:12,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:53:12,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 13:53:12,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:53:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:53:12,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:53:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:12,422 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:53:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:12,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:12,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:12,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:12,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:53:12,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:12,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:12,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:12,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:12,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532774461] [2020-10-13 13:53:12,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:12,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:53:12,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895063579] [2020-10-13 13:53:12,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:53:12,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:12,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:53:12,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:12,476 INFO L87 Difference]: Start difference. First operand 1908 states and 2666 transitions. Second operand 4 states. [2020-10-13 13:53:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:14,322 INFO L93 Difference]: Finished difference Result 5618 states and 7837 transitions. [2020-10-13 13:53:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:53:14,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-13 13:53:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:14,340 INFO L225 Difference]: With dead ends: 5618 [2020-10-13 13:53:14,340 INFO L226 Difference]: Without dead ends: 3772 [2020-10-13 13:53:14,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2020-10-13 13:53:14,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 1914. [2020-10-13 13:53:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2020-10-13 13:53:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2672 transitions. [2020-10-13 13:53:14,480 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2672 transitions. Word has length 148 [2020-10-13 13:53:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:14,480 INFO L479 AbstractCegarLoop]: Abstraction has 1914 states and 2672 transitions. [2020-10-13 13:53:14,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:53:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2672 transitions. [2020-10-13 13:53:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 13:53:14,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:14,485 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] [2020-10-13 13:53:14,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:53:14,485 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:14,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:14,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2133584666, now seen corresponding path program 1 times [2020-10-13 13:53:14,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:14,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959892513] [2020-10-13 13:53:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:14,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:14,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:15,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:19,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:19,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 13:53:19,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:53:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:53:19,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:53:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:53:19,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 13:53:19,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:19,803 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:53:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:19,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:19,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:53:19,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:19,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:19,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959892513] [2020-10-13 13:53:19,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:19,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:53:19,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022605256] [2020-10-13 13:53:19,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:53:19,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:19,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:53:19,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:19,856 INFO L87 Difference]: Start difference. First operand 1914 states and 2672 transitions. Second operand 5 states. [2020-10-13 13:53:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:21,490 INFO L93 Difference]: Finished difference Result 3772 states and 5262 transitions. [2020-10-13 13:53:21,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:21,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 13:53:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:21,500 INFO L225 Difference]: With dead ends: 3772 [2020-10-13 13:53:21,500 INFO L226 Difference]: Without dead ends: 1914 [2020-10-13 13:53:21,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:53:21,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2020-10-13 13:53:21,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1907. [2020-10-13 13:53:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-10-13 13:53:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2658 transitions. [2020-10-13 13:53:21,614 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2658 transitions. Word has length 149 [2020-10-13 13:53:21,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:21,615 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 2658 transitions. [2020-10-13 13:53:21,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:53:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2658 transitions. [2020-10-13 13:53:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 13:53:21,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:21,619 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] [2020-10-13 13:53:21,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:53:21,620 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:21,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1370031572, now seen corresponding path program 1 times [2020-10-13 13:53:21,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:21,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234084663] [2020-10-13 13:53:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:21,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:22,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:22,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:23,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:24,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:26,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:26,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:26,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:26,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 13:53:26,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:53:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:53:26,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:53:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:53:26,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:53:26,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:26,926 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:53:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:26,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:26,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:26,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:26,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:26,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:53:26,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:26,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:26,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:26,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234084663] [2020-10-13 13:53:26,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:26,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:53:26,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779924583] [2020-10-13 13:53:26,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:53:26,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:26,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:53:26,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:26,963 INFO L87 Difference]: Start difference. First operand 1907 states and 2658 transitions. Second operand 5 states. [2020-10-13 13:53:29,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:29,015 INFO L93 Difference]: Finished difference Result 5496 states and 7631 transitions. [2020-10-13 13:53:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:29,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-13 13:53:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:29,028 INFO L225 Difference]: With dead ends: 5496 [2020-10-13 13:53:29,028 INFO L226 Difference]: Without dead ends: 3665 [2020-10-13 13:53:29,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:53:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2020-10-13 13:53:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3638. [2020-10-13 13:53:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3638 states. [2020-10-13 13:53:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5011 transitions. [2020-10-13 13:53:29,257 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5011 transitions. Word has length 149 [2020-10-13 13:53:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:29,257 INFO L479 AbstractCegarLoop]: Abstraction has 3638 states and 5011 transitions. [2020-10-13 13:53:29,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:53:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5011 transitions. [2020-10-13 13:53:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 13:53:29,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:29,265 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] [2020-10-13 13:53:29,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:53:29,265 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:29,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1419084817, now seen corresponding path program 1 times [2020-10-13 13:53:29,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:29,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514415306] [2020-10-13 13:53:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:31,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:31,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:32,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:33,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:34,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:34,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:34,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-13 13:53:34,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 13:53:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:53:34,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:53:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:53:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:53:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:34,597 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:53:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:34,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:34,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:53:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:34,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514415306] [2020-10-13 13:53:34,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:34,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:53:34,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374731813] [2020-10-13 13:53:34,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:53:34,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:34,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:53:34,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:34,638 INFO L87 Difference]: Start difference. First operand 3638 states and 5011 transitions. Second operand 4 states. [2020-10-13 13:53:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:37,588 INFO L93 Difference]: Finished difference Result 5556 states and 7588 transitions. [2020-10-13 13:53:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:53:37,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-13 13:53:37,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:37,602 INFO L225 Difference]: With dead ends: 5556 [2020-10-13 13:53:37,603 INFO L226 Difference]: Without dead ends: 3808 [2020-10-13 13:53:37,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2020-10-13 13:53:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 3781. [2020-10-13 13:53:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2020-10-13 13:53:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5140 transitions. [2020-10-13 13:53:37,839 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5140 transitions. Word has length 149 [2020-10-13 13:53:37,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:37,841 INFO L479 AbstractCegarLoop]: Abstraction has 3781 states and 5140 transitions. [2020-10-13 13:53:37,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:53:37,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5140 transitions. [2020-10-13 13:53:37,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 13:53:37,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:37,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:37,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:53:37,849 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:37,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1756935790, now seen corresponding path program 1 times [2020-10-13 13:53:37,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:37,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937616062] [2020-10-13 13:53:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:39,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:41,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:42,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 13:53:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:53:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:53:42,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:53:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:53:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:53:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:43,129 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:53:43,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:43,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:43,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:43,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:43,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:53:43,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:43,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:43,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:43,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937616062] [2020-10-13 13:53:43,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:43,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:53:43,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970021237] [2020-10-13 13:53:43,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:53:43,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:43,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:53:43,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:43,162 INFO L87 Difference]: Start difference. First operand 3781 states and 5140 transitions. Second operand 4 states. [2020-10-13 13:53:46,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:46,254 INFO L93 Difference]: Finished difference Result 9143 states and 12426 transitions. [2020-10-13 13:53:46,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:53:46,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-13 13:53:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:46,281 INFO L225 Difference]: With dead ends: 9143 [2020-10-13 13:53:46,282 INFO L226 Difference]: Without dead ends: 7423 [2020-10-13 13:53:46,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:53:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2020-10-13 13:53:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 3793. [2020-10-13 13:53:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3793 states. [2020-10-13 13:53:46,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5152 transitions. [2020-10-13 13:53:46,560 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5152 transitions. Word has length 150 [2020-10-13 13:53:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:46,561 INFO L479 AbstractCegarLoop]: Abstraction has 3793 states and 5152 transitions. [2020-10-13 13:53:46,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:53:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5152 transitions. [2020-10-13 13:53:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 13:53:46,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:46,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:53:46,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:53:46,569 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash 919093897, now seen corresponding path program 1 times [2020-10-13 13:53:46,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:46,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019056661] [2020-10-13 13:53:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:46,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:46,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:46,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:46,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:47,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:49,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:51,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:51,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 13:53:51,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:53:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:53:51,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:53:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:53:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:53:51,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:51,891 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:53:51,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:51,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:51,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:51,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:51,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:53:51,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:51,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019056661] [2020-10-13 13:53:51,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:51,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:53:51,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266301258] [2020-10-13 13:53:51,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:53:51,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:51,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:53:51,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:51,935 INFO L87 Difference]: Start difference. First operand 3793 states and 5152 transitions. Second operand 5 states. [2020-10-13 13:53:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:53:53,511 INFO L93 Difference]: Finished difference Result 4692 states and 6362 transitions. [2020-10-13 13:53:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:53:53,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-13 13:53:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:53:53,520 INFO L225 Difference]: With dead ends: 4692 [2020-10-13 13:53:53,521 INFO L226 Difference]: Without dead ends: 2948 [2020-10-13 13:53:53,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:53:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2020-10-13 13:53:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2938. [2020-10-13 13:53:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2938 states. [2020-10-13 13:53:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 3983 transitions. [2020-10-13 13:53:53,711 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 3983 transitions. Word has length 151 [2020-10-13 13:53:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:53:53,712 INFO L479 AbstractCegarLoop]: Abstraction has 2938 states and 3983 transitions. [2020-10-13 13:53:53,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:53:53,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 3983 transitions. [2020-10-13 13:53:53,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-13 13:53:53,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:53:53,718 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] [2020-10-13 13:53:53,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:53:53,719 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:53:53,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:53:53,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1065098761, now seen corresponding path program 1 times [2020-10-13 13:53:53,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:53:53,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493939850] [2020-10-13 13:53:53,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:53:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:53,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:53,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:53,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:53,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:54,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:54,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:58,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:58,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-13 13:53:58,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:53:58,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 13:53:58,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:53:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:53:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:53:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:59,052 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:53:59,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:53:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:53:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:53:59,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:53:59,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:53:59,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:53:59,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:53:59,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:53:59,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:53:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:53:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:53:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:53:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:53:59,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493939850] [2020-10-13 13:53:59,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:53:59,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:53:59,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360201959] [2020-10-13 13:53:59,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:53:59,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:53:59,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:53:59,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:53:59,113 INFO L87 Difference]: Start difference. First operand 2938 states and 3983 transitions. Second operand 5 states. [2020-10-13 13:54:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:01,894 INFO L93 Difference]: Finished difference Result 6549 states and 8943 transitions. [2020-10-13 13:54:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:01,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-13 13:54:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:01,903 INFO L225 Difference]: With dead ends: 6549 [2020-10-13 13:54:01,903 INFO L226 Difference]: Without dead ends: 4006 [2020-10-13 13:54:01,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2020-10-13 13:54:02,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 3986. [2020-10-13 13:54:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3986 states. [2020-10-13 13:54:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5340 transitions. [2020-10-13 13:54:02,161 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5340 transitions. Word has length 155 [2020-10-13 13:54:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:02,161 INFO L479 AbstractCegarLoop]: Abstraction has 3986 states and 5340 transitions. [2020-10-13 13:54:02,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5340 transitions. [2020-10-13 13:54:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 13:54:02,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:02,168 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] [2020-10-13 13:54:02,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:54:02,168 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:02,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:02,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1963206099, now seen corresponding path program 1 times [2020-10-13 13:54:02,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:02,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659978680] [2020-10-13 13:54:02,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:02,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:02,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:02,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:03,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:06,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:06,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:06,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:07,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:07,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 13:54:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:54:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:54:07,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:54:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:54:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:54:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:07,480 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:07,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:07,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:07,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:07,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:07,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:54:07,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:07,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659978680] [2020-10-13 13:54:07,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:07,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:54:07,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328813967] [2020-10-13 13:54:07,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:54:07,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:54:07,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:54:07,538 INFO L87 Difference]: Start difference. First operand 3986 states and 5340 transitions. Second operand 4 states. [2020-10-13 13:54:10,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:10,567 INFO L93 Difference]: Finished difference Result 10364 states and 14025 transitions. [2020-10-13 13:54:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:54:10,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-13 13:54:10,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:10,582 INFO L225 Difference]: With dead ends: 10364 [2020-10-13 13:54:10,582 INFO L226 Difference]: Without dead ends: 7425 [2020-10-13 13:54:10,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:54:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2020-10-13 13:54:11,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7394. [2020-10-13 13:54:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7394 states. [2020-10-13 13:54:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7394 states to 7394 states and 9827 transitions. [2020-10-13 13:54:11,144 INFO L78 Accepts]: Start accepts. Automaton has 7394 states and 9827 transitions. Word has length 157 [2020-10-13 13:54:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:11,144 INFO L479 AbstractCegarLoop]: Abstraction has 7394 states and 9827 transitions. [2020-10-13 13:54:11,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:54:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 7394 states and 9827 transitions. [2020-10-13 13:54:11,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 13:54:11,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:11,153 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] [2020-10-13 13:54:11,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:54:11,153 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1384412496, now seen corresponding path program 1 times [2020-10-13 13:54:11,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:11,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933453105] [2020-10-13 13:54:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:11,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:11,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:11,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:16,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 13:54:16,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:54:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:54:16,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:54:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:54:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:16,510 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:16,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:16,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:16,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:54:16,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:16,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:16,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:16,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933453105] [2020-10-13 13:54:16,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:16,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:16,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239288747] [2020-10-13 13:54:16,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:16,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:16,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:16,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:16,560 INFO L87 Difference]: Start difference. First operand 7394 states and 9827 transitions. Second operand 5 states. [2020-10-13 13:54:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:18,993 INFO L93 Difference]: Finished difference Result 16368 states and 21834 transitions. [2020-10-13 13:54:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:18,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 13:54:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:19,017 INFO L225 Difference]: With dead ends: 16368 [2020-10-13 13:54:19,017 INFO L226 Difference]: Without dead ends: 11380 [2020-10-13 13:54:19,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11380 states. [2020-10-13 13:54:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11380 to 7380. [2020-10-13 13:54:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7380 states. [2020-10-13 13:54:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7380 states to 7380 states and 9805 transitions. [2020-10-13 13:54:19,683 INFO L78 Accepts]: Start accepts. Automaton has 7380 states and 9805 transitions. Word has length 157 [2020-10-13 13:54:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:19,683 INFO L479 AbstractCegarLoop]: Abstraction has 7380 states and 9805 transitions. [2020-10-13 13:54:19,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7380 states and 9805 transitions. [2020-10-13 13:54:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 13:54:19,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:19,694 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] [2020-10-13 13:54:19,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:54:19,695 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:19,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1460981709, now seen corresponding path program 1 times [2020-10-13 13:54:19,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:19,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432026832] [2020-10-13 13:54:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:20,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 13:54:24,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:54:24,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:54:24,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:54:24,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 13:54:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:54:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:25,004 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:25,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:25,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:25,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:25,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:25,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:54:25,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:25,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:25,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432026832] [2020-10-13 13:54:25,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:25,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:54:25,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563648156] [2020-10-13 13:54:25,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:54:25,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:25,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:54:25,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:54:25,036 INFO L87 Difference]: Start difference. First operand 7380 states and 9805 transitions. Second operand 4 states. [2020-10-13 13:54:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:27,090 INFO L93 Difference]: Finished difference Result 11762 states and 15667 transitions. [2020-10-13 13:54:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:54:27,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-13 13:54:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:27,108 INFO L225 Difference]: With dead ends: 11762 [2020-10-13 13:54:27,108 INFO L226 Difference]: Without dead ends: 9095 [2020-10-13 13:54:27,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:54:27,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9095 states. [2020-10-13 13:54:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9095 to 7274. [2020-10-13 13:54:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7274 states. [2020-10-13 13:54:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 9679 transitions. [2020-10-13 13:54:27,699 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 9679 transitions. Word has length 158 [2020-10-13 13:54:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:27,699 INFO L479 AbstractCegarLoop]: Abstraction has 7274 states and 9679 transitions. [2020-10-13 13:54:27,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:54:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 9679 transitions. [2020-10-13 13:54:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-13 13:54:27,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:27,706 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] [2020-10-13 13:54:27,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:54:27,706 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1275281357, now seen corresponding path program 1 times [2020-10-13 13:54:27,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:27,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856332071] [2020-10-13 13:54:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:27,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:28,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:28,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:29,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:32,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:32,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 13:54:32,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:54:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:54:32,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:54:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:54:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:33,033 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:54:33,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:33,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856332071] [2020-10-13 13:54:33,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:33,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:33,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269631842] [2020-10-13 13:54:33,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:33,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:33,081 INFO L87 Difference]: Start difference. First operand 7274 states and 9679 transitions. Second operand 5 states. [2020-10-13 13:54:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:34,837 INFO L93 Difference]: Finished difference Result 11896 states and 15865 transitions. [2020-10-13 13:54:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:34,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-13 13:54:34,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:34,844 INFO L225 Difference]: With dead ends: 11896 [2020-10-13 13:54:34,844 INFO L226 Difference]: Without dead ends: 6016 [2020-10-13 13:54:34,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2020-10-13 13:54:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 6010. [2020-10-13 13:54:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6010 states. [2020-10-13 13:54:35,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6010 states to 6010 states and 7968 transitions. [2020-10-13 13:54:35,249 INFO L78 Accepts]: Start accepts. Automaton has 6010 states and 7968 transitions. Word has length 159 [2020-10-13 13:54:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:35,249 INFO L479 AbstractCegarLoop]: Abstraction has 6010 states and 7968 transitions. [2020-10-13 13:54:35,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6010 states and 7968 transitions. [2020-10-13 13:54:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 13:54:35,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:35,254 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] [2020-10-13 13:54:35,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:54:35,254 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:35,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:35,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1501994802, now seen corresponding path program 1 times [2020-10-13 13:54:35,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:35,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308238904] [2020-10-13 13:54:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:35,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:35,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:35,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:35,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:36,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:40,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:40,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 13:54:40,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:54:40,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:54:40,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:54:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 13:54:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:40,611 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:40,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:40,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:40,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:40,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:54:40,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:40,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308238904] [2020-10-13 13:54:40,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:40,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:40,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511535381] [2020-10-13 13:54:40,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:40,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:40,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:40,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:40,660 INFO L87 Difference]: Start difference. First operand 6010 states and 7968 transitions. Second operand 5 states. [2020-10-13 13:54:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:43,845 INFO L93 Difference]: Finished difference Result 7862 states and 10459 transitions. [2020-10-13 13:54:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:43,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-13 13:54:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:43,852 INFO L225 Difference]: With dead ends: 7862 [2020-10-13 13:54:43,852 INFO L226 Difference]: Without dead ends: 6041 [2020-10-13 13:54:43,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2020-10-13 13:54:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 5958. [2020-10-13 13:54:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5958 states. [2020-10-13 13:54:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5958 states to 5958 states and 7893 transitions. [2020-10-13 13:54:44,188 INFO L78 Accepts]: Start accepts. Automaton has 5958 states and 7893 transitions. Word has length 160 [2020-10-13 13:54:44,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:44,189 INFO L479 AbstractCegarLoop]: Abstraction has 5958 states and 7893 transitions. [2020-10-13 13:54:44,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:44,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5958 states and 7893 transitions. [2020-10-13 13:54:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 13:54:44,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:44,193 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] [2020-10-13 13:54:44,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:54:44,194 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:44,194 INFO L82 PathProgramCache]: Analyzing trace with hash 832540892, now seen corresponding path program 1 times [2020-10-13 13:54:44,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:44,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709792336] [2020-10-13 13:54:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:45,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:49,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 13:54:49,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:54:49,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:54:49,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:49,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:54:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:54:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 13:54:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:49,485 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:49,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:49,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:49,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:54:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:54:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:54:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:49,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709792336] [2020-10-13 13:54:49,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:49,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:49,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094996582] [2020-10-13 13:54:49,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:54:49,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:49,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:54:49,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:54:49,529 INFO L87 Difference]: Start difference. First operand 5958 states and 7893 transitions. Second operand 5 states. [2020-10-13 13:54:51,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:54:51,734 INFO L93 Difference]: Finished difference Result 9270 states and 12360 transitions. [2020-10-13 13:54:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:54:51,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-13 13:54:51,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:54:51,739 INFO L225 Difference]: With dead ends: 9270 [2020-10-13 13:54:51,739 INFO L226 Difference]: Without dead ends: 5540 [2020-10-13 13:54:51,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5540 states. [2020-10-13 13:54:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 5374. [2020-10-13 13:54:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5374 states. [2020-10-13 13:54:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 7074 transitions. [2020-10-13 13:54:52,055 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 7074 transitions. Word has length 162 [2020-10-13 13:54:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:54:52,055 INFO L479 AbstractCegarLoop]: Abstraction has 5374 states and 7074 transitions. [2020-10-13 13:54:52,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:54:52,055 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 7074 transitions. [2020-10-13 13:54:52,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 13:54:52,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:54:52,060 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] [2020-10-13 13:54:52,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:54:52,060 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:54:52,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:54:52,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2030202523, now seen corresponding path program 1 times [2020-10-13 13:54:52,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:54:52,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229351017] [2020-10-13 13:54:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:54:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:53,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:57,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 13:54:57,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:54:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:54:57,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:54:57,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:54:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 13:54:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:57,379 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:54:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:54:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:54:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:54:57,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:54:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:54:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:54:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:54:57,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:54:57,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:54:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:54:57,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:54:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:54:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:54:57,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229351017] [2020-10-13 13:54:57,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:54:57,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:54:57,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333969610] [2020-10-13 13:54:57,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:54:57,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:54:57,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:54:57,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:54:57,428 INFO L87 Difference]: Start difference. First operand 5374 states and 7074 transitions. Second operand 6 states. [2020-10-13 13:54:57,696 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-13 13:55:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:00,156 INFO L93 Difference]: Finished difference Result 12928 states and 17422 transitions. [2020-10-13 13:55:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:55:00,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-10-13 13:55:00,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:00,167 INFO L225 Difference]: With dead ends: 12928 [2020-10-13 13:55:00,167 INFO L226 Difference]: Without dead ends: 8726 [2020-10-13 13:55:00,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:55:00,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8726 states. [2020-10-13 13:55:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8726 to 8707. [2020-10-13 13:55:00,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8707 states. [2020-10-13 13:55:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8707 states to 8707 states and 11606 transitions. [2020-10-13 13:55:00,806 INFO L78 Accepts]: Start accepts. Automaton has 8707 states and 11606 transitions. Word has length 167 [2020-10-13 13:55:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:00,806 INFO L479 AbstractCegarLoop]: Abstraction has 8707 states and 11606 transitions. [2020-10-13 13:55:00,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:55:00,807 INFO L276 IsEmpty]: Start isEmpty. Operand 8707 states and 11606 transitions. [2020-10-13 13:55:00,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 13:55:00,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:00,812 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] [2020-10-13 13:55:00,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:55:00,813 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:00,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:00,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2018148741, now seen corresponding path program 1 times [2020-10-13 13:55:00,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:00,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889922764] [2020-10-13 13:55:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:00,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:05,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:05,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 13:55:05,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:55:05,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:55:05,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:55:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 13:55:05,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 13:55:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:06,434 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:55:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:55:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:06,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:06,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:55:06,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:55:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:55:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:55:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:55:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:55:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:55:06,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889922764] [2020-10-13 13:55:06,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:55:06,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:55:06,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626713528] [2020-10-13 13:55:06,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:55:06,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:55:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:55:06,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:55:06,554 INFO L87 Difference]: Start difference. First operand 8707 states and 11606 transitions. Second operand 12 states. [2020-10-13 13:55:06,691 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-13 13:55:07,542 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 243 [2020-10-13 13:55:13,381 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-13 13:55:17,817 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (* c_~max2~0 (- 1)))) (or (and (<= 0 (+ c_~max2~0 (* 256 (div (+ c_~max1~0 .cse0 256) 256)))) (<= (+ (* 256 (div (+ .cse0 383) 256)) c_~max2~0) 255)) (<= 0 (+ (* 256 (div (+ c_~max1~0 .cse0) 256)) c_~max2~0)))) (let ((.cse1 (* 256 (div c_main_~node2____CPAchecker_TMP_0~1 256)))) (or (and (<= c_main_~node2____CPAchecker_TMP_0~1 (+ .cse1 c_~max1~0 256)) (<= (+ .cse1 128) c_main_~node2____CPAchecker_TMP_0~1)) (<= c_main_~node2____CPAchecker_TMP_0~1 (+ .cse1 c_~max1~0)))) (<= c_~p21_new~0 c_~max1~0) (<= c_~m1~0 c_~max1~0) (= c_~max2~0 c_main_~node2____CPAchecker_TMP_0~0)) is different from false [2020-10-13 13:55:22,463 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-13 13:55:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:55:52,537 INFO L93 Difference]: Finished difference Result 24515 states and 33441 transitions. [2020-10-13 13:55:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 13:55:52,538 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 167 [2020-10-13 13:55:52,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:55:52,558 INFO L225 Difference]: With dead ends: 24515 [2020-10-13 13:55:52,558 INFO L226 Difference]: Without dead ends: 20810 [2020-10-13 13:55:52,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=122, Invalid=432, Unknown=2, NotChecked=44, Total=600 [2020-10-13 13:55:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20810 states. [2020-10-13 13:55:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20810 to 10761. [2020-10-13 13:55:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10761 states. [2020-10-13 13:55:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10761 states to 10761 states and 13954 transitions. [2020-10-13 13:55:53,441 INFO L78 Accepts]: Start accepts. Automaton has 10761 states and 13954 transitions. Word has length 167 [2020-10-13 13:55:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:55:53,442 INFO L479 AbstractCegarLoop]: Abstraction has 10761 states and 13954 transitions. [2020-10-13 13:55:53,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:55:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10761 states and 13954 transitions. [2020-10-13 13:55:53,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-13 13:55:53,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:55:53,450 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] [2020-10-13 13:55:53,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:55:53,451 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:55:53,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:55:53,451 INFO L82 PathProgramCache]: Analyzing trace with hash -53108467, now seen corresponding path program 1 times [2020-10-13 13:55:53,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:55:53,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600422682] [2020-10-13 13:55:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:55:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:55:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:53,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:53,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:55:58,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:55:58,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 13:55:58,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:55:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:55:58,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:55:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:55:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:55:58,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 13:55:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:55:59,044 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2020-10-13 13:55:59,372 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-13 13:55:59,527 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-13 13:55:59,795 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-13 13:56:00,435 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:56:00,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:00,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:00,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:00,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:56:00,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:00,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:00,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:00,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:00,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600422682] [2020-10-13 13:56:00,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:00,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 13:56:00,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407373399] [2020-10-13 13:56:00,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:56:00,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:00,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:56:00,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:56:00,533 INFO L87 Difference]: Start difference. First operand 10761 states and 13954 transitions. Second operand 19 states. [2020-10-13 13:56:00,903 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-13 13:56:01,848 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-13 13:56:02,308 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-13 13:56:04,886 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2020-10-13 13:56:06,010 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 105