/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:38:20,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:38:20,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:38:20,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:38:20,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:38:20,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:38:20,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:38:20,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:38:20,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:38:20,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:38:20,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:38:20,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:38:20,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:38:20,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:38:20,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:38:20,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:38:20,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:38:20,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:38:20,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:38:20,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:38:20,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:38:20,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:38:20,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:38:20,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:38:20,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:38:20,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:38:20,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:38:20,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:38:20,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:38:20,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:38:20,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:38:20,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:38:20,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:38:20,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:38:20,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:38:20,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:38:20,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:38:20,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:38:20,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:38:20,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:38:20,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:38:20,232 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 [2020-10-15 03:38:20,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:38:20,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:38:20,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:38:20,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:38:20,275 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:38:20,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:38:20,276 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:38:20,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:38:20,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:38:20,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:38:20,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:38:20,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:38:20,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:38:20,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:38:20,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:38:20,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:38:20,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:38:20,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:38:20,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:38:20,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:38:20,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:38:20,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:38:20,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:38:20,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:38:20,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:38:20,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:38:20,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:38:20,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:38:20,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:38:20,281 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:38:20,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:38:20,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:38:20,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:38:20,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:38:20,648 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:38:20,648 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:38:20,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8af3943b/859dfd6a92554bb5aee610c43e92a3ec/FLAGb18de85f3 [2020-10-15 03:38:21,457 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:38:21,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:38:21,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8af3943b/859dfd6a92554bb5aee610c43e92a3ec/FLAGb18de85f3 [2020-10-15 03:38:21,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8af3943b/859dfd6a92554bb5aee610c43e92a3ec [2020-10-15 03:38:21,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:38:21,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:38:21,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:38:21,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:38:21,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:38:21,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:38:21" (1/1) ... [2020-10-15 03:38:21,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2876d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:21, skipping insertion in model container [2020-10-15 03:38:21,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:38:21" (1/1) ... [2020-10-15 03:38:21,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:38:21,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:38:22,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:38:22,925 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:38:23,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:38:23,364 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:38:23,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23 WrapperNode [2020-10-15 03:38:23,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:38:23,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:38:23,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:38:23,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:38:23,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (1/1) ... [2020-10-15 03:38:23,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (1/1) ... [2020-10-15 03:38:23,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (1/1) ... [2020-10-15 03:38:23,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (1/1) ... [2020-10-15 03:38:23,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (1/1) ... [2020-10-15 03:38:23,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (1/1) ... [2020-10-15 03:38:23,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (1/1) ... [2020-10-15 03:38:23,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:38:23,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:38:23,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:38:23,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:38:23,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (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 [2020-10-15 03:38:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:38:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:38:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:38:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:38:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:38:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:38:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:38:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:38:23,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:38:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:38:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:38:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:38:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:38:23,704 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:38:23,705 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:38:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:38:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:38:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:38:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:38:23,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:38:27,077 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:38:27,077 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:38:27,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:38:27 BoogieIcfgContainer [2020-10-15 03:38:27,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:38:27,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:38:27,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:38:27,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:38:27,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:38:21" (1/3) ... [2020-10-15 03:38:27,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2db214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:38:27, skipping insertion in model container [2020-10-15 03:38:27,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:38:23" (2/3) ... [2020-10-15 03:38:27,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2db214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:38:27, skipping insertion in model container [2020-10-15 03:38:27,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:38:27" (3/3) ... [2020-10-15 03:38:27,099 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:38:27,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:38:27,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-15 03:38:27,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 03:38:27,163 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:38:27,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:38:27,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:38:27,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:38:27,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:38:27,164 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:38:27,164 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:38:27,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:38:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states. [2020-10-15 03:38:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 03:38:27,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:27,231 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] [2020-10-15 03:38:27,232 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1856988322, now seen corresponding path program 1 times [2020-10-15 03:38:27,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:27,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903844685] [2020-10-15 03:38:27,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:27,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:27,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:29,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:29,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:30,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:32,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:32,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 03:38:32,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:38:32,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:38:32,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:32,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:38:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:38:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:38:32,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:38:34,391 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:38:34,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:34,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:34,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:34,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:34,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 03:38:34,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:34,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:34,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:34,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:38:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:38:34,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903844685] [2020-10-15 03:38:34,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:34,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:38:34,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649578425] [2020-10-15 03:38:34,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:38:34,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:34,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:38:34,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:38:34,548 INFO L87 Difference]: Start difference. First operand 1295 states. Second operand 8 states. [2020-10-15 03:38:36,018 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-15 03:38:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:47,476 INFO L93 Difference]: Finished difference Result 2281 states and 3864 transitions. [2020-10-15 03:38:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:38:47,479 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-15 03:38:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:47,517 INFO L225 Difference]: With dead ends: 2281 [2020-10-15 03:38:47,517 INFO L226 Difference]: Without dead ends: 1697 [2020-10-15 03:38:47,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:38:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-10-15 03:38:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1375. [2020-10-15 03:38:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-10-15 03:38:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1805 transitions. [2020-10-15 03:38:47,709 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1805 transitions. Word has length 56 [2020-10-15 03:38:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:38:47,710 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 1805 transitions. [2020-10-15 03:38:47,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:38:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1805 transitions. [2020-10-15 03:38:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:38:47,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:47,718 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] [2020-10-15 03:38:47,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:38:47,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:47,720 INFO L82 PathProgramCache]: Analyzing trace with hash -867241665, now seen corresponding path program 1 times [2020-10-15 03:38:47,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:47,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177845094] [2020-10-15 03:38:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:47,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:47,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:49,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:52,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:38:52,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:38:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:38:52,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:52,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:38:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:38:52,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:38:52,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:38:54,270 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:38:54,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:54,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:54,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:54,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:54,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:38:54,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:54,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:54,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:38:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:38:54,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177845094] [2020-10-15 03:38:54,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:54,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:38:54,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009953767] [2020-10-15 03:38:54,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:38:54,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:54,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:38:54,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:38:54,363 INFO L87 Difference]: Start difference. First operand 1375 states and 1805 transitions. Second operand 8 states. [2020-10-15 03:38:55,464 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-15 03:39:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:39:03,983 INFO L93 Difference]: Finished difference Result 2127 states and 2940 transitions. [2020-10-15 03:39:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:39:03,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-10-15 03:39:03,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:39:03,996 INFO L225 Difference]: With dead ends: 2127 [2020-10-15 03:39:03,997 INFO L226 Difference]: Without dead ends: 1953 [2020-10-15 03:39:03,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:39:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2020-10-15 03:39:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1373. [2020-10-15 03:39:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2020-10-15 03:39:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1802 transitions. [2020-10-15 03:39:04,085 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1802 transitions. Word has length 57 [2020-10-15 03:39:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:39:04,086 INFO L479 AbstractCegarLoop]: Abstraction has 1373 states and 1802 transitions. [2020-10-15 03:39:04,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:39:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1802 transitions. [2020-10-15 03:39:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:39:04,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:39:04,090 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] [2020-10-15 03:39:04,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:39:04,091 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:39:04,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:39:04,091 INFO L82 PathProgramCache]: Analyzing trace with hash -108202759, now seen corresponding path program 1 times [2020-10-15 03:39:04,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:39:04,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109505461] [2020-10-15 03:39:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:39:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:08,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:09,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:09,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:39:09,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:39:09,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:39:09,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:09,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:39:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:39:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:39:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:39:10,421 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:39:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:39:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:10,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:10,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:39:10,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:39:10,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:39:10,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:10,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:39:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:39:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:39:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:39:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:39:10,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109505461] [2020-10-15 03:39:10,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:39:10,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:39:10,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68532484] [2020-10-15 03:39:10,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:39:10,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:39:10,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:39:10,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:39:10,495 INFO L87 Difference]: Start difference. First operand 1373 states and 1802 transitions. Second operand 9 states. [2020-10-15 03:39:11,758 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-15 03:39:19,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:39:19,465 INFO L93 Difference]: Finished difference Result 3491 states and 4741 transitions. [2020-10-15 03:39:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:39:19,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-15 03:39:19,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:39:19,479 INFO L225 Difference]: With dead ends: 3491 [2020-10-15 03:39:19,479 INFO L226 Difference]: Without dead ends: 2296 [2020-10-15 03:39:19,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:39:19,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2020-10-15 03:39:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1774. [2020-10-15 03:39:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1774 states. [2020-10-15 03:39:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2317 transitions. [2020-10-15 03:39:19,587 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2317 transitions. Word has length 57 [2020-10-15 03:39:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:39:19,596 INFO L479 AbstractCegarLoop]: Abstraction has 1774 states and 2317 transitions. [2020-10-15 03:39:19,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:39:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2317 transitions. [2020-10-15 03:39:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 03:39:19,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:39:19,601 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] [2020-10-15 03:39:19,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:39:19,602 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:39:19,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:39:19,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1579807103, now seen corresponding path program 1 times [2020-10-15 03:39:19,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:39:19,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278900748] [2020-10-15 03:39:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:39:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:19,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:20,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:20,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:21,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:22,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:23,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:24,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:24,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-15 03:39:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:39:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:39:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:24,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:39:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:39:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:39:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:39:25,993 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:39:25,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:39:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:26,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:26,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:39:26,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:39:26,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:39:26,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:26,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:39:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:39:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:39:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:39:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:39:26,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278900748] [2020-10-15 03:39:26,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:39:26,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:39:26,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768889000] [2020-10-15 03:39:26,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:39:26,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:39:26,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:39:26,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:39:26,060 INFO L87 Difference]: Start difference. First operand 1774 states and 2317 transitions. Second operand 9 states. [2020-10-15 03:39:27,180 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-15 03:39:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:39:33,345 INFO L93 Difference]: Finished difference Result 4131 states and 5855 transitions. [2020-10-15 03:39:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:39:33,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-15 03:39:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:39:33,364 INFO L225 Difference]: With dead ends: 4131 [2020-10-15 03:39:33,365 INFO L226 Difference]: Without dead ends: 3350 [2020-10-15 03:39:33,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:39:33,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2020-10-15 03:39:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 2167. [2020-10-15 03:39:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2167 states. [2020-10-15 03:39:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 2939 transitions. [2020-10-15 03:39:33,514 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 2939 transitions. Word has length 57 [2020-10-15 03:39:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:39:33,515 INFO L479 AbstractCegarLoop]: Abstraction has 2167 states and 2939 transitions. [2020-10-15 03:39:33,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:39:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 2939 transitions. [2020-10-15 03:39:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:39:33,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:39:33,519 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] [2020-10-15 03:39:33,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:39:33,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:39:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:39:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash -477493960, now seen corresponding path program 1 times [2020-10-15 03:39:33,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:39:33,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874371852] [2020-10-15 03:39:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:39:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:33,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:34,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:35,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:35,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:36,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:38,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:38,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:39:38,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:39:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:39:38,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:38,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:39:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:39:38,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:39:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:39:39,888 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:39:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:39:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:39,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:39,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:39:39,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:39:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 03:39:39,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:39,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:39:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:39:39,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:39:39,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:39,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:39:39,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874371852] [2020-10-15 03:39:39,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:39:39,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:39:39,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585141025] [2020-10-15 03:39:39,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:39:39,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:39:39,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:39:39,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:39:39,988 INFO L87 Difference]: Start difference. First operand 2167 states and 2939 transitions. Second operand 10 states. [2020-10-15 03:39:41,162 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-15 03:39:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:39:48,661 INFO L93 Difference]: Finished difference Result 5485 states and 7892 transitions. [2020-10-15 03:39:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 03:39:48,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-15 03:39:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:39:48,683 INFO L225 Difference]: With dead ends: 5485 [2020-10-15 03:39:48,684 INFO L226 Difference]: Without dead ends: 4301 [2020-10-15 03:39:48,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:39:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2020-10-15 03:39:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 2010. [2020-10-15 03:39:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-15 03:39:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2712 transitions. [2020-10-15 03:39:48,902 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2712 transitions. Word has length 59 [2020-10-15 03:39:48,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:39:48,906 INFO L479 AbstractCegarLoop]: Abstraction has 2010 states and 2712 transitions. [2020-10-15 03:39:48,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:39:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2712 transitions. [2020-10-15 03:39:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:39:48,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:39:48,910 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] [2020-10-15 03:39:48,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:39:48,910 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:39:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:39:48,911 INFO L82 PathProgramCache]: Analyzing trace with hash 519506083, now seen corresponding path program 1 times [2020-10-15 03:39:48,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:39:48,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509640565] [2020-10-15 03:39:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:39:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:48,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:49,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:50,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:52,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:39:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:39:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:39:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:53,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:39:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:39:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:39:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:55,104 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:39:55,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:39:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:39:55,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:39:55,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:39:55,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:39:55,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:39:55,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:39:55,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:39:55,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:39:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:39:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:39:55,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:39:55,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:39:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:39:55,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509640565] [2020-10-15 03:39:55,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:39:55,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:39:55,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585750399] [2020-10-15 03:39:55,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:39:55,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:39:55,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:39:55,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:39:55,160 INFO L87 Difference]: Start difference. First operand 2010 states and 2712 transitions. Second operand 8 states. [2020-10-15 03:39:56,355 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 511 [2020-10-15 03:40:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:40:02,937 INFO L93 Difference]: Finished difference Result 4334 states and 6206 transitions. [2020-10-15 03:40:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:40:02,938 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-15 03:40:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:40:02,950 INFO L225 Difference]: With dead ends: 4334 [2020-10-15 03:40:02,950 INFO L226 Difference]: Without dead ends: 3628 [2020-10-15 03:40:02,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:40:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3628 states. [2020-10-15 03:40:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3628 to 2630. [2020-10-15 03:40:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2630 states. [2020-10-15 03:40:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3612 transitions. [2020-10-15 03:40:03,154 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3612 transitions. Word has length 59 [2020-10-15 03:40:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:40:03,155 INFO L479 AbstractCegarLoop]: Abstraction has 2630 states and 3612 transitions. [2020-10-15 03:40:03,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:40:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3612 transitions. [2020-10-15 03:40:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 03:40:03,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:40:03,159 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] [2020-10-15 03:40:03,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:40:03,159 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:40:03,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:40:03,160 INFO L82 PathProgramCache]: Analyzing trace with hash -226433332, now seen corresponding path program 1 times [2020-10-15 03:40:03,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:40:03,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030902101] [2020-10-15 03:40:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:40:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:03,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:04,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:08,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 03:40:08,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:40:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:40:08,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:08,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:40:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:40:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:40:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:09,358 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:40:09,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:40:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:09,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:09,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:40:09,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:40:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:40:09,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:09,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:40:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:40:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:40:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:40:09,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030902101] [2020-10-15 03:40:09,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:40:09,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:40:09,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379722008] [2020-10-15 03:40:09,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:40:09,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:40:09,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:40:09,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:40:09,411 INFO L87 Difference]: Start difference. First operand 2630 states and 3612 transitions. Second operand 8 states. [2020-10-15 03:40:10,537 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-15 03:40:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:40:15,993 INFO L93 Difference]: Finished difference Result 5607 states and 8173 transitions. [2020-10-15 03:40:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:40:15,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-10-15 03:40:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:40:16,011 INFO L225 Difference]: With dead ends: 5607 [2020-10-15 03:40:16,012 INFO L226 Difference]: Without dead ends: 4579 [2020-10-15 03:40:16,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:40:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2020-10-15 03:40:16,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 2521. [2020-10-15 03:40:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2521 states. [2020-10-15 03:40:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3469 transitions. [2020-10-15 03:40:16,224 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3469 transitions. Word has length 60 [2020-10-15 03:40:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:40:16,224 INFO L479 AbstractCegarLoop]: Abstraction has 2521 states and 3469 transitions. [2020-10-15 03:40:16,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:40:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3469 transitions. [2020-10-15 03:40:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:40:16,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:40:16,230 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] [2020-10-15 03:40:16,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:40:16,230 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:40:16,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:40:16,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1939429315, now seen corresponding path program 1 times [2020-10-15 03:40:16,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:40:16,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435226807] [2020-10-15 03:40:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:40:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:16,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:18,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:21,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:21,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:40:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:40:21,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 03:40:21,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:21,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:21,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:40:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:40:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:40:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:22,412 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:40:22,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:40:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:22,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:22,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:40:22,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:40:22,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:40:22,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:22,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:40:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:40:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:40:22,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:40:22,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435226807] [2020-10-15 03:40:22,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:40:22,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:40:22,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362056443] [2020-10-15 03:40:22,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:40:22,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:40:22,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:40:22,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:40:22,457 INFO L87 Difference]: Start difference. First operand 2521 states and 3469 transitions. Second operand 6 states. [2020-10-15 03:40:23,586 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-15 03:40:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:40:27,837 INFO L93 Difference]: Finished difference Result 7009 states and 10425 transitions. [2020-10-15 03:40:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:40:27,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:40:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:40:27,863 INFO L225 Difference]: With dead ends: 7009 [2020-10-15 03:40:27,863 INFO L226 Difference]: Without dead ends: 5895 [2020-10-15 03:40:27,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:40:27,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5895 states. [2020-10-15 03:40:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5895 to 3645. [2020-10-15 03:40:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3645 states. [2020-10-15 03:40:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5171 transitions. [2020-10-15 03:40:28,156 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5171 transitions. Word has length 69 [2020-10-15 03:40:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:40:28,157 INFO L479 AbstractCegarLoop]: Abstraction has 3645 states and 5171 transitions. [2020-10-15 03:40:28,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:40:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5171 transitions. [2020-10-15 03:40:28,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:40:28,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:40:28,163 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] [2020-10-15 03:40:28,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:40:28,163 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:40:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:40:28,164 INFO L82 PathProgramCache]: Analyzing trace with hash -313648216, now seen corresponding path program 1 times [2020-10-15 03:40:28,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:40:28,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236359597] [2020-10-15 03:40:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:40:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:28,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:33,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:33,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:40:33,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:40:33,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:40:33,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:33,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:40:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:40:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:40:33,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:34,366 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:40:34,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:40:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:34,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:34,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:34,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:40:34,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:40:34,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:40:34,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:34,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:40:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:40:34,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:40:34,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:40:34,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236359597] [2020-10-15 03:40:34,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:40:34,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:40:34,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097184738] [2020-10-15 03:40:34,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:40:34,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:40:34,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:40:34,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:40:34,427 INFO L87 Difference]: Start difference. First operand 3645 states and 5171 transitions. Second operand 6 states. [2020-10-15 03:40:35,564 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 507 [2020-10-15 03:40:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:40:39,620 INFO L93 Difference]: Finished difference Result 7375 states and 10773 transitions. [2020-10-15 03:40:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:40:39,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:40:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:40:39,629 INFO L225 Difference]: With dead ends: 7375 [2020-10-15 03:40:39,629 INFO L226 Difference]: Without dead ends: 4723 [2020-10-15 03:40:39,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:40:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2020-10-15 03:40:39,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4721. [2020-10-15 03:40:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4721 states. [2020-10-15 03:40:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 6769 transitions. [2020-10-15 03:40:39,966 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 6769 transitions. Word has length 70 [2020-10-15 03:40:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:40:39,966 INFO L479 AbstractCegarLoop]: Abstraction has 4721 states and 6769 transitions. [2020-10-15 03:40:39,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:40:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 6769 transitions. [2020-10-15 03:40:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:40:39,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:40:39,972 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] [2020-10-15 03:40:39,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:40:39,972 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:40:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:40:39,973 INFO L82 PathProgramCache]: Analyzing trace with hash -915509265, now seen corresponding path program 1 times [2020-10-15 03:40:39,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:40:39,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51741532] [2020-10-15 03:40:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:40:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:40,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:40,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:40,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:42,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:42,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:40:42,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:40:42,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2292 [2020-10-15 03:40:42,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:42,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:40:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:40:42,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:40:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:40:43,442 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:40:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:40:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:43,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:43,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:40:43,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:40:43,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 03:40:43,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:43,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:40:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:40:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:40:43,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:40:43,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51741532] [2020-10-15 03:40:43,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:40:43,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:40:43,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311024537] [2020-10-15 03:40:43,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:40:43,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:40:43,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:40:43,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:40:43,509 INFO L87 Difference]: Start difference. First operand 4721 states and 6769 transitions. Second operand 6 states. [2020-10-15 03:40:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:40:48,094 INFO L93 Difference]: Finished difference Result 12533 states and 18504 transitions. [2020-10-15 03:40:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:40:48,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:40:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:40:48,113 INFO L225 Difference]: With dead ends: 12533 [2020-10-15 03:40:48,113 INFO L226 Difference]: Without dead ends: 8665 [2020-10-15 03:40:48,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:40:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8665 states. [2020-10-15 03:40:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8665 to 8661. [2020-10-15 03:40:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8661 states. [2020-10-15 03:40:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8661 states to 8661 states and 12590 transitions. [2020-10-15 03:40:48,920 INFO L78 Accepts]: Start accepts. Automaton has 8661 states and 12590 transitions. Word has length 71 [2020-10-15 03:40:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:40:48,921 INFO L479 AbstractCegarLoop]: Abstraction has 8661 states and 12590 transitions. [2020-10-15 03:40:48,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:40:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 8661 states and 12590 transitions. [2020-10-15 03:40:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:40:48,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:40:48,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:40:48,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:40:48,925 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:40:48,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:40:48,925 INFO L82 PathProgramCache]: Analyzing trace with hash 728205040, now seen corresponding path program 1 times [2020-10-15 03:40:48,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:40:48,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401787383] [2020-10-15 03:40:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:40:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:49,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:49,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:49,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:53,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:53,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:40:53,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:40:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:40:53,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:53,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:40:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:40:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:40:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:55,127 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:40:55,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:40:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:40:55,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:40:55,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:40:55,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:40:55,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:40:55,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:40:55,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:40:55,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:40:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:40:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:40:55,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:40:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:40:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:40:55,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401787383] [2020-10-15 03:40:55,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:40:55,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:40:55,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647006747] [2020-10-15 03:40:55,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:40:55,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:40:55,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:40:55,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:40:55,199 INFO L87 Difference]: Start difference. First operand 8661 states and 12590 transitions. Second operand 6 states. [2020-10-15 03:40:56,372 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-15 03:41:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:01,106 INFO L93 Difference]: Finished difference Result 20743 states and 30679 transitions. [2020-10-15 03:41:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:41:01,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:41:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:01,137 INFO L225 Difference]: With dead ends: 20743 [2020-10-15 03:41:01,137 INFO L226 Difference]: Without dead ends: 13723 [2020-10-15 03:41:01,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:41:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13723 states. [2020-10-15 03:41:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13723 to 11449. [2020-10-15 03:41:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11449 states. [2020-10-15 03:41:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11449 states to 11449 states and 16626 transitions. [2020-10-15 03:41:02,305 INFO L78 Accepts]: Start accepts. Automaton has 11449 states and 16626 transitions. Word has length 71 [2020-10-15 03:41:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:02,306 INFO L479 AbstractCegarLoop]: Abstraction has 11449 states and 16626 transitions. [2020-10-15 03:41:02,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:41:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 11449 states and 16626 transitions. [2020-10-15 03:41:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:41:02,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:02,310 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] [2020-10-15 03:41:02,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:41:02,310 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:02,310 INFO L82 PathProgramCache]: Analyzing trace with hash -287096949, now seen corresponding path program 1 times [2020-10-15 03:41:02,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:02,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584485962] [2020-10-15 03:41:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:02,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:02,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:03,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:07,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:07,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:41:07,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:41:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:41:07,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:07,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:41:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:41:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:41:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:08,513 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:41:08,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:08,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:08,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:41:08,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:08,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:41:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:41:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:41:08,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584485962] [2020-10-15 03:41:08,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:08,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:41:08,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170680965] [2020-10-15 03:41:08,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:41:08,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:08,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:41:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:41:08,559 INFO L87 Difference]: Start difference. First operand 11449 states and 16626 transitions. Second operand 7 states. [2020-10-15 03:41:09,724 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 509 [2020-10-15 03:41:15,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:15,924 INFO L93 Difference]: Finished difference Result 26465 states and 38905 transitions. [2020-10-15 03:41:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:41:15,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-10-15 03:41:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:15,960 INFO L225 Difference]: With dead ends: 26465 [2020-10-15 03:41:15,960 INFO L226 Difference]: Without dead ends: 20476 [2020-10-15 03:41:15,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:41:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20476 states. [2020-10-15 03:41:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20476 to 11420. [2020-10-15 03:41:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11420 states. [2020-10-15 03:41:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11420 states to 11420 states and 16591 transitions. [2020-10-15 03:41:17,244 INFO L78 Accepts]: Start accepts. Automaton has 11420 states and 16591 transitions. Word has length 72 [2020-10-15 03:41:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:17,244 INFO L479 AbstractCegarLoop]: Abstraction has 11420 states and 16591 transitions. [2020-10-15 03:41:17,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:41:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 11420 states and 16591 transitions. [2020-10-15 03:41:17,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:41:17,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:17,248 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] [2020-10-15 03:41:17,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:41:17,249 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:17,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:17,249 INFO L82 PathProgramCache]: Analyzing trace with hash 41248122, now seen corresponding path program 1 times [2020-10-15 03:41:17,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:17,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379143672] [2020-10-15 03:41:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:17,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:18,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:19,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:19,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:41:19,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:41:19,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2326 [2020-10-15 03:41:19,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:19,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:41:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:41:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:41:19,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:20,774 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:41:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:20,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:20,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:20,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:41:20,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:20,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:41:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:20,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:41:20,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:41:20,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379143672] [2020-10-15 03:41:20,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:20,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:41:20,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078781904] [2020-10-15 03:41:20,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:41:20,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:20,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:41:20,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:41:20,817 INFO L87 Difference]: Start difference. First operand 11420 states and 16591 transitions. Second operand 7 states. [2020-10-15 03:41:21,979 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 509 [2020-10-15 03:41:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:28,638 INFO L93 Difference]: Finished difference Result 29546 states and 43494 transitions. [2020-10-15 03:41:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:41:28,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-10-15 03:41:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:28,670 INFO L225 Difference]: With dead ends: 29546 [2020-10-15 03:41:28,670 INFO L226 Difference]: Without dead ends: 21296 [2020-10-15 03:41:28,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:41:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21296 states. [2020-10-15 03:41:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21296 to 11156. [2020-10-15 03:41:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11156 states. [2020-10-15 03:41:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11156 states to 11156 states and 16200 transitions. [2020-10-15 03:41:30,031 INFO L78 Accepts]: Start accepts. Automaton has 11156 states and 16200 transitions. Word has length 73 [2020-10-15 03:41:30,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:30,032 INFO L479 AbstractCegarLoop]: Abstraction has 11156 states and 16200 transitions. [2020-10-15 03:41:30,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:41:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 11156 states and 16200 transitions. [2020-10-15 03:41:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:41:30,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:30,036 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] [2020-10-15 03:41:30,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:41:30,036 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:30,036 INFO L82 PathProgramCache]: Analyzing trace with hash -201317368, now seen corresponding path program 1 times [2020-10-15 03:41:30,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:30,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175040035] [2020-10-15 03:41:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:30,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:30,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:30,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:33,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:35,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:35,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:41:35,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:41:35,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:41:35,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:35,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:41:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:41:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:41:35,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:36,400 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:41:36,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:36,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:36,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:36,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:36,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:41:36,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:36,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:41:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:41:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:41:36,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175040035] [2020-10-15 03:41:36,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:36,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:41:36,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127927069] [2020-10-15 03:41:36,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:41:36,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:36,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:41:36,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:41:36,452 INFO L87 Difference]: Start difference. First operand 11156 states and 16200 transitions. Second operand 6 states. [2020-10-15 03:41:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:41,983 INFO L93 Difference]: Finished difference Result 24931 states and 36491 transitions. [2020-10-15 03:41:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:41:41,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:41:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:42,005 INFO L225 Difference]: With dead ends: 24931 [2020-10-15 03:41:42,005 INFO L226 Difference]: Without dead ends: 16756 [2020-10-15 03:41:42,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:41:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16756 states. [2020-10-15 03:41:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16756 to 13318. [2020-10-15 03:41:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13318 states. [2020-10-15 03:41:43,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13318 states to 13318 states and 19062 transitions. [2020-10-15 03:41:43,686 INFO L78 Accepts]: Start accepts. Automaton has 13318 states and 19062 transitions. Word has length 73 [2020-10-15 03:41:43,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:43,687 INFO L479 AbstractCegarLoop]: Abstraction has 13318 states and 19062 transitions. [2020-10-15 03:41:43,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:41:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13318 states and 19062 transitions. [2020-10-15 03:41:43,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:41:43,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:43,691 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] [2020-10-15 03:41:43,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:41:43,692 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:43,692 INFO L82 PathProgramCache]: Analyzing trace with hash 78090256, now seen corresponding path program 1 times [2020-10-15 03:41:43,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:43,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462835052] [2020-10-15 03:41:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:48,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:48,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:41:48,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:41:48,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:41:48,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:48,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:41:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:41:48,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:41:48,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:49,958 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:41:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:49,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:49,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:49,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:49,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:41:49,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:49,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:41:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:41:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:41:50,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462835052] [2020-10-15 03:41:50,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:50,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:41:50,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940610724] [2020-10-15 03:41:50,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:41:50,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:50,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:41:50,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:41:50,006 INFO L87 Difference]: Start difference. First operand 13318 states and 19062 transitions. Second operand 9 states. [2020-10-15 03:41:51,839 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-15 03:42:00,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:00,250 INFO L93 Difference]: Finished difference Result 31432 states and 45556 transitions. [2020-10-15 03:42:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:42:00,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-15 03:42:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:00,282 INFO L225 Difference]: With dead ends: 31432 [2020-10-15 03:42:00,282 INFO L226 Difference]: Without dead ends: 25735 [2020-10-15 03:42:00,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:42:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25735 states. [2020-10-15 03:42:02,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25735 to 16169. [2020-10-15 03:42:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16169 states. [2020-10-15 03:42:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16169 states to 16169 states and 23176 transitions. [2020-10-15 03:42:02,256 INFO L78 Accepts]: Start accepts. Automaton has 16169 states and 23176 transitions. Word has length 73 [2020-10-15 03:42:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:02,256 INFO L479 AbstractCegarLoop]: Abstraction has 16169 states and 23176 transitions. [2020-10-15 03:42:02,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:42:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 16169 states and 23176 transitions. [2020-10-15 03:42:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:42:02,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:02,261 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] [2020-10-15 03:42:02,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:42:02,262 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:02,262 INFO L82 PathProgramCache]: Analyzing trace with hash 490193673, now seen corresponding path program 1 times [2020-10-15 03:42:02,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:02,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680961474] [2020-10-15 03:42:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:02,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:03,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:03,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:42:03,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:42:03,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1359 [2020-10-15 03:42:03,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:03,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:42:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:03,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:42:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:04,845 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 499 [2020-10-15 03:42:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:04,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 03:42:04,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:04,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:04,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:42:04,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680961474] [2020-10-15 03:42:04,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:04,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:42:04,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951960586] [2020-10-15 03:42:04,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:42:04,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:04,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:42:04,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:04,915 INFO L87 Difference]: Start difference. First operand 16169 states and 23176 transitions. Second operand 6 states.