/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/systemc/toy1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:55:19,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:55:19,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:55:19,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:55:19,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:55:19,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:55:19,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:55:19,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:55:19,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:55:19,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:55:19,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:55:19,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:55:19,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:55:19,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:55:19,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:55:19,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:55:19,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:55:19,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:55:19,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:55:19,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:55:19,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:55:19,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:55:19,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:55:19,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:55:19,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:55:19,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:55:19,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:55:19,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:55:19,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:55:19,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:55:19,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:55:19,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:55:19,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:55:19,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:55:19,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:55:19,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:55:19,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:55:19,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:55:19,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:55:19,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:55:19,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:55:19,885 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 04:55:19,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:55:19,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:55:19,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:55:19,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:55:19,909 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:55:19,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:55:19,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:55:19,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:55:19,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:55:19,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:55:19,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:55:19,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:55:19,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:55:19,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:55:19,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:55:19,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:55:19,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:55:19,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:55:19,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:55:19,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:55:19,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:55:19,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:55:19,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:55:19,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:55:19,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:55:19,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:55:19,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:55:19,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:55:19,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:55:19,914 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 04:55:20,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:55:20,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:55:20,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:55:20,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:55:20,274 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:55:20,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-15 04:55:20,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/819b3ff28/7736fffec1304b01b16066eb1bc08f2a/FLAG3a7427140 [2020-10-15 04:55:20,843 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:55:20,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-15 04:55:20,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/819b3ff28/7736fffec1304b01b16066eb1bc08f2a/FLAG3a7427140 [2020-10-15 04:55:21,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/819b3ff28/7736fffec1304b01b16066eb1bc08f2a [2020-10-15 04:55:21,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:55:21,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:55:21,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:55:21,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:55:21,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:55:21,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21, skipping insertion in model container [2020-10-15 04:55:21,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:55:21,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:55:21,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:55:21,478 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:55:21,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:55:21,657 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:55:21,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21 WrapperNode [2020-10-15 04:55:21,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:55:21,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:55:21,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:55:21,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:55:21,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (1/1) ... [2020-10-15 04:55:21,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:55:21,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:55:21,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:55:21,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:55:21,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:55:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:55:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:55:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-15 04:55:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-15 04:55:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-15 04:55:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-15 04:55:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-15 04:55:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-15 04:55:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-15 04:55:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-15 04:55:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:55:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:55:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 04:55:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-15 04:55:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-15 04:55:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-15 04:55:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-15 04:55:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-15 04:55:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:55:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-15 04:55:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-15 04:55:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:55:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:55:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:55:22,510 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:55:22,510 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-15 04:55:22,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:55:22 BoogieIcfgContainer [2020-10-15 04:55:22,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:55:22,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:55:22,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:55:22,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:55:22,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:55:21" (1/3) ... [2020-10-15 04:55:22,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec77754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:55:22, skipping insertion in model container [2020-10-15 04:55:22,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:55:21" (2/3) ... [2020-10-15 04:55:22,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec77754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:55:22, skipping insertion in model container [2020-10-15 04:55:22,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:55:22" (3/3) ... [2020-10-15 04:55:22,525 INFO L109 eAbstractionObserver]: Analyzing ICFG toy1.cil.c [2020-10-15 04:55:22,535 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:55:22,544 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:55:22,558 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:55:22,584 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:55:22,584 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:55:22,584 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:55:22,585 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:55:22,585 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:55:22,585 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:55:22,585 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:55:22,586 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:55:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-15 04:55:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-15 04:55:22,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:55:22,621 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] [2020-10-15 04:55:22,621 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:55:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:55:22,627 INFO L82 PathProgramCache]: Analyzing trace with hash -854031758, now seen corresponding path program 1 times [2020-10-15 04:55:22,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:55:22,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367011182] [2020-10-15 04:55:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:55:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:22,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:23,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:23,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:27,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:27,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 04:55:27,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:55:27,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4366 [2020-10-15 04:55:27,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:27,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:27,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 04:55:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:55:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 04:55:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 04:55:27,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:55:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:27,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:27,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:55:27,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:55:27,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:27,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:55:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:55:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:27,427 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 04:55:27,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367011182] [2020-10-15 04:55:27,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:55:27,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:55:27,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721343268] [2020-10-15 04:55:27,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:55:27,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:55:27,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:55:27,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:55:27,455 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2020-10-15 04:55:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:55:28,578 INFO L93 Difference]: Finished difference Result 445 states and 774 transitions. [2020-10-15 04:55:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:55:28,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-15 04:55:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:55:28,596 INFO L225 Difference]: With dead ends: 445 [2020-10-15 04:55:28,596 INFO L226 Difference]: Without dead ends: 292 [2020-10-15 04:55:28,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:55:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-15 04:55:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 259. [2020-10-15 04:55:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 04:55:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 417 transitions. [2020-10-15 04:55:28,680 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 417 transitions. Word has length 47 [2020-10-15 04:55:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:55:28,681 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 417 transitions. [2020-10-15 04:55:28,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:55:28,682 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 417 transitions. [2020-10-15 04:55:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:55:28,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:55:28,687 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:55:28,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:55:28,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:55:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:55:28,688 INFO L82 PathProgramCache]: Analyzing trace with hash -123056560, now seen corresponding path program 1 times [2020-10-15 04:55:28,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:55:28,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935769484] [2020-10-15 04:55:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:55:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:28,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:28,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:29,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:29,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:29,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:30,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:33,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:33,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:55:33,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:55:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:55:33,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:33,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:55:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-15 04:55:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:55:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:33,901 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-15 04:55:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:55:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:33,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:33,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:55:33,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:33,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:55:33,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:33,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:55:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:55:33,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:33,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 04:55:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:33,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:33,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:55:33,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:33,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:55:33,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:33,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:55:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:55:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:55:33,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935769484] [2020-10-15 04:55:33,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:55:33,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:55:33,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782802322] [2020-10-15 04:55:33,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:55:33,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:55:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:55:33,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:55:33,980 INFO L87 Difference]: Start difference. First operand 259 states and 417 transitions. Second operand 5 states. [2020-10-15 04:55:34,118 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-15 04:55:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:55:35,304 INFO L93 Difference]: Finished difference Result 793 states and 1308 transitions. [2020-10-15 04:55:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:55:35,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-15 04:55:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:55:35,311 INFO L225 Difference]: With dead ends: 793 [2020-10-15 04:55:35,311 INFO L226 Difference]: Without dead ends: 569 [2020-10-15 04:55:35,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:55:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-10-15 04:55:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 478. [2020-10-15 04:55:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-15 04:55:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 782 transitions. [2020-10-15 04:55:35,387 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 782 transitions. Word has length 61 [2020-10-15 04:55:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:55:35,389 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 782 transitions. [2020-10-15 04:55:35,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:55:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 782 transitions. [2020-10-15 04:55:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:55:35,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:55:35,406 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:55:35,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:55:35,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:55:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:55:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash -138575278, now seen corresponding path program 1 times [2020-10-15 04:55:35,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:55:35,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967123695] [2020-10-15 04:55:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:55:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:35,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:36,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:36,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:39,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:40,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:40,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:55:40,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:55:40,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:55:40,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:40,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:40,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 04:55:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:55:40,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 04:55:40,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:55:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:40,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:40,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:55:40,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:40,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 04:55:40,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:40,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:55:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:55:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 04:55:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:40,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:55:40,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:55:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:40,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:55:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:55:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:55:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-15 04:55:40,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967123695] [2020-10-15 04:55:40,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:55:40,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:55:40,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407438153] [2020-10-15 04:55:40,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:55:40,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:55:40,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:55:40,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:55:40,674 INFO L87 Difference]: Start difference. First operand 478 states and 782 transitions. Second operand 8 states. [2020-10-15 04:55:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:55:42,879 INFO L93 Difference]: Finished difference Result 1625 states and 2721 transitions. [2020-10-15 04:55:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 04:55:42,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-15 04:55:42,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:55:42,893 INFO L225 Difference]: With dead ends: 1625 [2020-10-15 04:55:42,893 INFO L226 Difference]: Without dead ends: 1370 [2020-10-15 04:55:42,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2020-10-15 04:55:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2020-10-15 04:55:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1066. [2020-10-15 04:55:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-15 04:55:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1781 transitions. [2020-10-15 04:55:43,037 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1781 transitions. Word has length 61 [2020-10-15 04:55:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:55:43,038 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1781 transitions. [2020-10-15 04:55:43,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:55:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1781 transitions. [2020-10-15 04:55:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:55:43,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:55:43,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:55:43,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:55:43,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:55:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:55:43,044 INFO L82 PathProgramCache]: Analyzing trace with hash -138522485, now seen corresponding path program 1 times [2020-10-15 04:55:43,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:55:43,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531465304] [2020-10-15 04:55:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:55:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:48,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:48,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:55:48,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:55:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:55:48,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:48,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:55:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 04:55:48,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 04:55:48,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:55:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:48,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:48,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:48,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:55:48,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:55:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:48,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:55:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:48,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:55:48,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:48,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 04:55:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:48,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:48,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:55:48,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:55:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:48,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:55:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:55:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:55:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:55:48,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531465304] [2020-10-15 04:55:48,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:55:48,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:55:48,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179183037] [2020-10-15 04:55:48,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:55:48,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:55:48,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:55:48,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:55:48,280 INFO L87 Difference]: Start difference. First operand 1066 states and 1781 transitions. Second operand 6 states. [2020-10-15 04:55:49,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:55:49,847 INFO L93 Difference]: Finished difference Result 3445 states and 5962 transitions. [2020-10-15 04:55:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 04:55:49,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-15 04:55:49,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:55:49,875 INFO L225 Difference]: With dead ends: 3445 [2020-10-15 04:55:49,875 INFO L226 Difference]: Without dead ends: 2434 [2020-10-15 04:55:49,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:55:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2020-10-15 04:55:50,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1886. [2020-10-15 04:55:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2020-10-15 04:55:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 3215 transitions. [2020-10-15 04:55:50,152 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 3215 transitions. Word has length 61 [2020-10-15 04:55:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:55:50,154 INFO L479 AbstractCegarLoop]: Abstraction has 1886 states and 3215 transitions. [2020-10-15 04:55:50,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:55:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 3215 transitions. [2020-10-15 04:55:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:55:50,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:55:50,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:55:50,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:55:50,164 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:55:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:55:50,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2127858701, now seen corresponding path program 1 times [2020-10-15 04:55:50,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:55:50,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647812433] [2020-10-15 04:55:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:55:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:50,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:53,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:53,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:55:53,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:55:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2859 [2020-10-15 04:55:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:53,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:55:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 04:55:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 04:55:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:55:53,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:55:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:53,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:53,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:53,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:55:53,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:53,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 04:55:53,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:53,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:55:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:55:53,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:53,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 04:55:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:53,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:53,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:53,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:55:53,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:53,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:55:53,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:53,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:53,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:55:53,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:55:53,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:55:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:55:53,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647812433] [2020-10-15 04:55:53,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:55:53,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:55:53,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213430814] [2020-10-15 04:55:53,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:55:53,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:55:53,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:55:53,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:55:53,215 INFO L87 Difference]: Start difference. First operand 1886 states and 3215 transitions. Second operand 5 states. [2020-10-15 04:55:54,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:55:54,566 INFO L93 Difference]: Finished difference Result 6214 states and 10756 transitions. [2020-10-15 04:55:54,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:55:54,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-15 04:55:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:55:54,600 INFO L225 Difference]: With dead ends: 6214 [2020-10-15 04:55:54,600 INFO L226 Difference]: Without dead ends: 4425 [2020-10-15 04:55:54,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:55:54,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2020-10-15 04:55:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 3329. [2020-10-15 04:55:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3329 states. [2020-10-15 04:55:55,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 5638 transitions. [2020-10-15 04:55:55,028 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 5638 transitions. Word has length 61 [2020-10-15 04:55:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:55:55,030 INFO L479 AbstractCegarLoop]: Abstraction has 3329 states and 5638 transitions. [2020-10-15 04:55:55,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:55:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 5638 transitions. [2020-10-15 04:55:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 04:55:55,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:55:55,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:55:55,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:55:55,043 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:55:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:55:55,044 INFO L82 PathProgramCache]: Analyzing trace with hash 431584973, now seen corresponding path program 1 times [2020-10-15 04:55:55,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:55:55,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116110925] [2020-10-15 04:55:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:55:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:55,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:57,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:57,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 04:55:57,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:55:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2436 [2020-10-15 04:55:57,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:57,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:55:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:55:57,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 04:55:57,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:55:57,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:55:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:57,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:57,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:55:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:55:57,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:57,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:55:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:55:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:55:57,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 04:55:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:57,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:57,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:55:57,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:55:57,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:55:57,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:55:57,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:55:57,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:55:57,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:55:57,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:55:57,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 04:55:57,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:55:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:55:57,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116110925] [2020-10-15 04:55:57,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:55:57,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 04:55:57,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975411348] [2020-10-15 04:55:57,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:55:57,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:55:57,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:55:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:55:57,633 INFO L87 Difference]: Start difference. First operand 3329 states and 5638 transitions. Second operand 5 states. [2020-10-15 04:55:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:55:59,310 INFO L93 Difference]: Finished difference Result 7589 states and 13211 transitions. [2020-10-15 04:55:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 04:55:59,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-15 04:55:59,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:55:59,355 INFO L225 Difference]: With dead ends: 7589 [2020-10-15 04:55:59,355 INFO L226 Difference]: Without dead ends: 5455 [2020-10-15 04:55:59,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:55:59,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2020-10-15 04:55:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 3474. [2020-10-15 04:55:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3474 states. [2020-10-15 04:55:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 5910 transitions. [2020-10-15 04:55:59,911 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 5910 transitions. Word has length 61 [2020-10-15 04:55:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:55:59,912 INFO L479 AbstractCegarLoop]: Abstraction has 3474 states and 5910 transitions. [2020-10-15 04:55:59,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:55:59,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 5910 transitions. [2020-10-15 04:55:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 04:55:59,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:55:59,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:55:59,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:55:59,934 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:55:59,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:55:59,934 INFO L82 PathProgramCache]: Analyzing trace with hash -132502218, now seen corresponding path program 1 times [2020-10-15 04:55:59,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:55:59,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789680182] [2020-10-15 04:55:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:55:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:55:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:55:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:01,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:03,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:03,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 04:56:03,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:56:03,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3397 [2020-10-15 04:56:03,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:03,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:56:03,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 04:56:03,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:56:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:56:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:56:03,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:56:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:03,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 04:56:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:03,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:03,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:03,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:56:03,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:56:03,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:03,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 04:56:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:03,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 04:56:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:03,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:03,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:56:03,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:03,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:03,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:56:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-15 04:56:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:03,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-15 04:56:03,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:56:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:03,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-15 04:56:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 04:56:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:03,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-15 04:56:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:03,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:03,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:03,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:56:03,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:56:03,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:03,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:56:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:03,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 04:56:03,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789680182] [2020-10-15 04:56:03,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:56:03,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 04:56:03,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064733170] [2020-10-15 04:56:03,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:56:03,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:56:03,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:56:03,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:56:03,557 INFO L87 Difference]: Start difference. First operand 3474 states and 5910 transitions. Second operand 8 states. [2020-10-15 04:56:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:56:07,065 INFO L93 Difference]: Finished difference Result 17249 states and 30659 transitions. [2020-10-15 04:56:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 04:56:07,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-15 04:56:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:56:07,224 INFO L225 Difference]: With dead ends: 17249 [2020-10-15 04:56:07,224 INFO L226 Difference]: Without dead ends: 13836 [2020-10-15 04:56:07,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-10-15 04:56:07,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13836 states. [2020-10-15 04:56:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13836 to 8147. [2020-10-15 04:56:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8147 states. [2020-10-15 04:56:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8147 states to 8147 states and 14341 transitions. [2020-10-15 04:56:08,285 INFO L78 Accepts]: Start accepts. Automaton has 8147 states and 14341 transitions. Word has length 96 [2020-10-15 04:56:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:56:08,286 INFO L479 AbstractCegarLoop]: Abstraction has 8147 states and 14341 transitions. [2020-10-15 04:56:08,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:56:08,287 INFO L276 IsEmpty]: Start isEmpty. Operand 8147 states and 14341 transitions. [2020-10-15 04:56:08,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 04:56:08,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:56:08,312 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:08,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:56:08,312 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:56:08,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:56:08,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1710225, now seen corresponding path program 1 times [2020-10-15 04:56:08,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:56:08,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441755688] [2020-10-15 04:56:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:56:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:09,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:12,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:12,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 04:56:12,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:56:12,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4283 [2020-10-15 04:56:12,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:12,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:56:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:56:12,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:56:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:56:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:12,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:12,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:56:12,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:12,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:56:12,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:12,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:12,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:12,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:56:12,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 04:56:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:12,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:12,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:56:12,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:12,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:56:12,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:12,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 04:56:12,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:12,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:12,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 04:56:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:12,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:12,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:56:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:56:12,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:12,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:12,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 04:56:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:12,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:12,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 04:56:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:12,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:12,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:56:12,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:12,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:12,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:56:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-15 04:56:12,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441755688] [2020-10-15 04:56:12,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:56:12,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 04:56:12,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551689796] [2020-10-15 04:56:12,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 04:56:12,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:56:12,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 04:56:12,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:56:12,772 INFO L87 Difference]: Start difference. First operand 8147 states and 14341 transitions. Second operand 6 states. [2020-10-15 04:56:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:56:15,129 INFO L93 Difference]: Finished difference Result 25113 states and 44587 transitions. [2020-10-15 04:56:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:56:15,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-15 04:56:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:56:15,221 INFO L225 Difference]: With dead ends: 25113 [2020-10-15 04:56:15,221 INFO L226 Difference]: Without dead ends: 17139 [2020-10-15 04:56:15,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-15 04:56:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17139 states. [2020-10-15 04:56:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17139 to 11259. [2020-10-15 04:56:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11259 states. [2020-10-15 04:56:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11259 states to 11259 states and 19831 transitions. [2020-10-15 04:56:16,481 INFO L78 Accepts]: Start accepts. Automaton has 11259 states and 19831 transitions. Word has length 88 [2020-10-15 04:56:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:56:16,482 INFO L479 AbstractCegarLoop]: Abstraction has 11259 states and 19831 transitions. [2020-10-15 04:56:16,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 04:56:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 11259 states and 19831 transitions. [2020-10-15 04:56:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-15 04:56:16,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:56:16,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:16,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:56:16,501 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:56:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:56:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1090676861, now seen corresponding path program 1 times [2020-10-15 04:56:16,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:56:16,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221991202] [2020-10-15 04:56:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:56:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:16,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:16,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:16,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:16,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:16,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:16,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:18,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:21,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:21,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-15 04:56:21,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:56:21,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:56:21,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:21,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:56:21,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 04:56:21,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 04:56:21,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:56:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:21,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:21,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:56:21,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:56:21,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:21,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:21,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 04:56:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:21,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:21,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:21,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:56:21,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:21,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:21,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:21,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 04:56:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:21,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-15 04:56:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:21,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:21,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:56:21,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 04:56:21,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:21,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:56:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:56:21,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 04:56:21,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:21,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-15 04:56:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:21,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:21,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:21,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:56:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:21,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:21,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:56:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 04:56:21,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221991202] [2020-10-15 04:56:21,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:56:21,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:56:21,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051213039] [2020-10-15 04:56:21,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:56:21,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:56:21,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:56:21,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:56:21,682 INFO L87 Difference]: Start difference. First operand 11259 states and 19831 transitions. Second operand 7 states. [2020-10-15 04:56:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:56:24,664 INFO L93 Difference]: Finished difference Result 38762 states and 69803 transitions. [2020-10-15 04:56:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 04:56:24,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-15 04:56:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:56:24,775 INFO L225 Difference]: With dead ends: 38762 [2020-10-15 04:56:24,776 INFO L226 Difference]: Without dead ends: 22828 [2020-10-15 04:56:24,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:56:24,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22828 states. [2020-10-15 04:56:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22828 to 15242. [2020-10-15 04:56:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15242 states. [2020-10-15 04:56:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15242 states to 15242 states and 26693 transitions. [2020-10-15 04:56:27,706 INFO L78 Accepts]: Start accepts. Automaton has 15242 states and 26693 transitions. Word has length 90 [2020-10-15 04:56:27,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:56:27,707 INFO L479 AbstractCegarLoop]: Abstraction has 15242 states and 26693 transitions. [2020-10-15 04:56:27,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:56:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 15242 states and 26693 transitions. [2020-10-15 04:56:27,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 04:56:27,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:56:27,817 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:27,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:56:27,818 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:56:27,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:56:27,819 INFO L82 PathProgramCache]: Analyzing trace with hash -460295377, now seen corresponding path program 1 times [2020-10-15 04:56:27,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:56:27,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623341595] [2020-10-15 04:56:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:56:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:27,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:56:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:56:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:32,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:56:32,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:32,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:32,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:32,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:32,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:32,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 04:56:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:32,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:32,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:32,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 04:56:32,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:32,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:56:32,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:32,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 04:56:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:56:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:33,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:33,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:56:33,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:33,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:56:33,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:33,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:33,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:33,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:33,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:33,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 04:56:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:33,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:33,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:56:33,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:56:33,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:33,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:33,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-15 04:56:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:33,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:33,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:56:33,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:56:33,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:33,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:56:33,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-15 04:56:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:33,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:33,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:33,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:56:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:33,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:33,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:56:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-15 04:56:33,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623341595] [2020-10-15 04:56:33,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:56:33,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 04:56:33,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956393964] [2020-10-15 04:56:33,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:56:33,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:56:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:56:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:56:33,082 INFO L87 Difference]: Start difference. First operand 15242 states and 26693 transitions. Second operand 7 states. [2020-10-15 04:56:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:56:36,717 INFO L93 Difference]: Finished difference Result 60624 states and 105288 transitions. [2020-10-15 04:56:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 04:56:36,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-15 04:56:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:56:36,962 INFO L225 Difference]: With dead ends: 60624 [2020-10-15 04:56:36,962 INFO L226 Difference]: Without dead ends: 45435 [2020-10-15 04:56:37,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:56:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45435 states. [2020-10-15 04:56:39,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45435 to 30260. [2020-10-15 04:56:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30260 states. [2020-10-15 04:56:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30260 states to 30260 states and 52766 transitions. [2020-10-15 04:56:39,845 INFO L78 Accepts]: Start accepts. Automaton has 30260 states and 52766 transitions. Word has length 131 [2020-10-15 04:56:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:56:39,845 INFO L479 AbstractCegarLoop]: Abstraction has 30260 states and 52766 transitions. [2020-10-15 04:56:39,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:56:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 30260 states and 52766 transitions. [2020-10-15 04:56:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-15 04:56:40,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:56:40,096 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:56:40,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:56:40,096 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:56:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:56:40,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1841862360, now seen corresponding path program 1 times [2020-10-15 04:56:40,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:56:40,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180090063] [2020-10-15 04:56:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:56:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:40,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:40,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:43,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:43,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:43,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:45,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:45,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 04:56:45,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:56:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:56:45,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:45,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 04:56:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:56:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 04:56:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:45,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:56:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:45,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:45,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:56:45,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:45,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:56:45,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:45,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:45,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 04:56:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:45,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:45,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 04:56:45,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 04:56:45,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:45,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:56:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:56:45,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 04:56:45,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:45,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:56:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:45,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:45,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:56:45,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:45,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:45,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:45,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:56:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 04:56:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:45,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:45,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:56:45,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:45,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:45,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:56:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:56:45,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 04:56:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-15 04:56:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:45,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:56:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-15 04:56:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:45,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:45,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:56:45,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:56:45,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:45,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-15 04:56:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:45,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-15 04:56:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:45,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:56:45,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:56:45,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:56:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:56:45,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:56:45,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:56:45,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:56:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:56:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:56:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:56:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-15 04:56:45,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180090063] [2020-10-15 04:56:45,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:56:45,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:56:45,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748640827] [2020-10-15 04:56:45,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:56:45,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:56:45,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:56:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:56:45,423 INFO L87 Difference]: Start difference. First operand 30260 states and 52766 transitions. Second operand 9 states. [2020-10-15 04:56:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:56:52,210 INFO L93 Difference]: Finished difference Result 123704 states and 222885 transitions. [2020-10-15 04:56:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 04:56:52,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 139 [2020-10-15 04:56:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:56:52,651 INFO L225 Difference]: With dead ends: 123704 [2020-10-15 04:56:52,651 INFO L226 Difference]: Without dead ends: 93668 [2020-10-15 04:56:53,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2020-10-15 04:56:53,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93668 states. [2020-10-15 04:56:58,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93668 to 53538. [2020-10-15 04:56:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53538 states. [2020-10-15 04:56:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53538 states to 53538 states and 93782 transitions. [2020-10-15 04:56:58,766 INFO L78 Accepts]: Start accepts. Automaton has 53538 states and 93782 transitions. Word has length 139 [2020-10-15 04:56:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:56:58,767 INFO L479 AbstractCegarLoop]: Abstraction has 53538 states and 93782 transitions. [2020-10-15 04:56:58,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:56:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 53538 states and 93782 transitions. [2020-10-15 04:56:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-15 04:56:59,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:56:59,007 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:56:59,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:56:59,007 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:56:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:56:59,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1847608881, now seen corresponding path program 1 times [2020-10-15 04:56:59,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:56:59,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468735753] [2020-10-15 04:56:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:56:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:56:59,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:59,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:59,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:59,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:56:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:02,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:02,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:04,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:04,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-15 04:57:04,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:57:04,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:57:04,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:04,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:57:04,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-15 04:57:04,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 04:57:04,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:57:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:04,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:04,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:57:04,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:57:04,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:04,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:04,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:04,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 04:57:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:04,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:04,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:04,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:04,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 04:57:04,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 04:57:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:57:04,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:04,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:57:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 04:57:04,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:57:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:04,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:04,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:57:04,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:57:04,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:04,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:04,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-15 04:57:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:04,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:04,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:57:04,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:57:04,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:04,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:04,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:04,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-15 04:57:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:04,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:57:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 04:57:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-15 04:57:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:04,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:04,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:57:04,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:57:04,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:04,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-15 04:57:04,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468735753] [2020-10-15 04:57:04,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:57:04,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 04:57:04,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042047304] [2020-10-15 04:57:04,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:57:04,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:57:04,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:57:04,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:57:04,269 INFO L87 Difference]: Start difference. First operand 53538 states and 93782 transitions. Second operand 7 states. [2020-10-15 04:57:09,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:57:09,506 INFO L93 Difference]: Finished difference Result 109661 states and 192193 transitions. [2020-10-15 04:57:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 04:57:09,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-15 04:57:09,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:57:09,832 INFO L225 Difference]: With dead ends: 109661 [2020-10-15 04:57:09,833 INFO L226 Difference]: Without dead ends: 61913 [2020-10-15 04:57:10,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:57:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61913 states. [2020-10-15 04:57:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61913 to 47256. [2020-10-15 04:57:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47256 states. [2020-10-15 04:57:13,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47256 states to 47256 states and 76202 transitions. [2020-10-15 04:57:13,848 INFO L78 Accepts]: Start accepts. Automaton has 47256 states and 76202 transitions. Word has length 131 [2020-10-15 04:57:13,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:57:13,848 INFO L479 AbstractCegarLoop]: Abstraction has 47256 states and 76202 transitions. [2020-10-15 04:57:13,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:57:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 47256 states and 76202 transitions. [2020-10-15 04:57:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 04:57:13,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:57:13,980 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:13,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 04:57:13,980 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:57:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:57:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1168634708, now seen corresponding path program 1 times [2020-10-15 04:57:13,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:57:13,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826896270] [2020-10-15 04:57:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:57:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:14,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:18,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:18,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 04:57:18,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:57:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 04:57:18,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:18,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:19,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:57:19,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 04:57:19,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:57:19,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:57:19,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:57:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:19,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:19,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:19,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:57:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:57:19,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:19,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:19,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 04:57:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:19,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:57:19,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:57:19,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:19,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:57:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:57:19,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:57:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:19,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:19,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:19,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:57:19,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:19,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:57:19,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:19,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:19,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:19,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:19,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-15 04:57:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:19,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:19,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:57:19,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:57:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:19,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:57:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-15 04:57:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:19,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:19,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:19,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:57:19,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:19,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:57:19,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:19,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:57:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:57:19,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826896270] [2020-10-15 04:57:19,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:57:19,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 04:57:19,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144314193] [2020-10-15 04:57:19,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:57:19,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:57:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:57:19,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:57:19,226 INFO L87 Difference]: Start difference. First operand 47256 states and 76202 transitions. Second operand 7 states. [2020-10-15 04:57:24,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:57:24,734 INFO L93 Difference]: Finished difference Result 123879 states and 198334 transitions. [2020-10-15 04:57:24,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 04:57:24,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-15 04:57:24,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:57:25,116 INFO L225 Difference]: With dead ends: 123879 [2020-10-15 04:57:25,117 INFO L226 Difference]: Without dead ends: 76959 [2020-10-15 04:57:25,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:57:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76959 states. [2020-10-15 04:57:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76959 to 58904. [2020-10-15 04:57:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58904 states. [2020-10-15 04:57:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58904 states to 58904 states and 94262 transitions. [2020-10-15 04:57:31,773 INFO L78 Accepts]: Start accepts. Automaton has 58904 states and 94262 transitions. Word has length 124 [2020-10-15 04:57:31,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:57:31,773 INFO L479 AbstractCegarLoop]: Abstraction has 58904 states and 94262 transitions. [2020-10-15 04:57:31,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:57:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 58904 states and 94262 transitions. [2020-10-15 04:57:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 04:57:31,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:57:31,884 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:31,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 04:57:31,884 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:57:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:57:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash -966810774, now seen corresponding path program 1 times [2020-10-15 04:57:31,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:57:31,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943635653] [2020-10-15 04:57:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:57:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:31,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:31,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:32,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:32,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:36,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:36,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 04:57:36,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:57:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:57:36,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:36,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:57:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 04:57:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 04:57:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:57:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:36,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:36,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:57:36,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:57:36,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:36,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:36,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:36,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 04:57:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:37,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:57:37,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:57:37,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:37,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:57:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:57:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:57:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:37,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:37,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:37,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:57:37,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:37,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:57:37,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:37,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:37,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-15 04:57:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:37,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:37,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:57:37,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:37,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:57:37,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:37,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:57:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:37,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-15 04:57:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:37,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:37,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:57:37,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:57:37,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:37,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:57:37,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:37,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:57:37,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943635653] [2020-10-15 04:57:37,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:57:37,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 04:57:37,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612560082] [2020-10-15 04:57:37,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:57:37,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:57:37,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:57:37,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:57:37,114 INFO L87 Difference]: Start difference. First operand 58904 states and 94262 transitions. Second operand 7 states. [2020-10-15 04:57:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:57:42,906 INFO L93 Difference]: Finished difference Result 134995 states and 215735 transitions. [2020-10-15 04:57:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 04:57:42,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-15 04:57:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:57:43,204 INFO L225 Difference]: With dead ends: 134995 [2020-10-15 04:57:43,204 INFO L226 Difference]: Without dead ends: 77541 [2020-10-15 04:57:43,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:57:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77541 states. [2020-10-15 04:57:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77541 to 36143. [2020-10-15 04:57:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36143 states. [2020-10-15 04:57:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36143 states to 36143 states and 57384 transitions. [2020-10-15 04:57:46,468 INFO L78 Accepts]: Start accepts. Automaton has 36143 states and 57384 transitions. Word has length 124 [2020-10-15 04:57:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:57:46,469 INFO L479 AbstractCegarLoop]: Abstraction has 36143 states and 57384 transitions. [2020-10-15 04:57:46,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:57:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 36143 states and 57384 transitions. [2020-10-15 04:57:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 04:57:46,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:57:46,536 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:57:46,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 04:57:46,536 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:57:46,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:57:46,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1050193234, now seen corresponding path program 1 times [2020-10-15 04:57:46,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:57:46,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285612616] [2020-10-15 04:57:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:57:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:46,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:46,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:46,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:46,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:46,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:51,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:51,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 04:57:51,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:57:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:57:51,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:51,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:57:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 04:57:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 04:57:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:51,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:57:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:51,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:51,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:51,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:57:51,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:57:51,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:51,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:51,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:51,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 04:57:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:51,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:51,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:57:51,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 04:57:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:51,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:57:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 04:57:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:51,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:57:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:51,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:57:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:57:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:51,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:57:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-15 04:57:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:51,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:51,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:51,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:57:51,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:57:51,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:51,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:57:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:51,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-15 04:57:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:57:51,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:57:51,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:57:51,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:57:51,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:57:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:57:51,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:57:51,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:57:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:57:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:57:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:57:51,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:57:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:57:51,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285612616] [2020-10-15 04:57:51,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:57:51,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 04:57:51,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061218767] [2020-10-15 04:57:51,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 04:57:51,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:57:51,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 04:57:51,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-15 04:57:51,773 INFO L87 Difference]: Start difference. First operand 36143 states and 57384 transitions. Second operand 7 states. [2020-10-15 04:57:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:57:57,173 INFO L93 Difference]: Finished difference Result 81786 states and 129743 transitions. [2020-10-15 04:57:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 04:57:57,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-15 04:57:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:57:57,348 INFO L225 Difference]: With dead ends: 81786 [2020-10-15 04:57:57,349 INFO L226 Difference]: Without dead ends: 47101 [2020-10-15 04:57:57,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-15 04:57:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47101 states. [2020-10-15 04:57:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47101 to 36359. [2020-10-15 04:57:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36359 states. [2020-10-15 04:57:59,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36359 states to 36359 states and 57708 transitions. [2020-10-15 04:57:59,955 INFO L78 Accepts]: Start accepts. Automaton has 36359 states and 57708 transitions. Word has length 124 [2020-10-15 04:57:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:57:59,956 INFO L479 AbstractCegarLoop]: Abstraction has 36359 states and 57708 transitions. [2020-10-15 04:57:59,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 04:57:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 36359 states and 57708 transitions. [2020-10-15 04:58:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-15 04:58:00,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:58:00,016 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:00,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 04:58:00,017 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:58:00,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:58:00,017 INFO L82 PathProgramCache]: Analyzing trace with hash 502462564, now seen corresponding path program 1 times [2020-10-15 04:58:00,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:58:00,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154963874] [2020-10-15 04:58:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:58:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:00,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:00,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:00,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:00,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:01,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:01,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:06,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:06,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 04:58:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 04:58:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6162 [2020-10-15 04:58:06,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:06,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:58:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 04:58:06,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 04:58:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:58:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:06,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:06,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:58:06,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:06,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:06,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 04:58:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:06,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:06,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:06,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 04:58:06,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:06,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:58:06,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:06,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:58:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:58:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 04:58:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:06,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 04:58:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:06,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:06,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:58:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:06,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:06,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:58:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-15 04:58:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:06,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:06,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:58:06,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:06,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:06,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:06,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:58:06,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:06,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-15 04:58:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:06,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:06,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:58:06,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:06,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:06,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:58:06,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:06,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-15 04:58:06,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154963874] [2020-10-15 04:58:06,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:58:06,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 04:58:06,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805396262] [2020-10-15 04:58:06,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 04:58:06,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:58:06,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 04:58:06,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-15 04:58:06,416 INFO L87 Difference]: Start difference. First operand 36359 states and 57708 transitions. Second operand 8 states. [2020-10-15 04:58:10,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:58:10,906 INFO L93 Difference]: Finished difference Result 84873 states and 135104 transitions. [2020-10-15 04:58:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 04:58:10,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 124 [2020-10-15 04:58:10,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:58:11,088 INFO L225 Difference]: With dead ends: 84873 [2020-10-15 04:58:11,088 INFO L226 Difference]: Without dead ends: 48523 [2020-10-15 04:58:11,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-10-15 04:58:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48523 states. [2020-10-15 04:58:14,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48523 to 38706. [2020-10-15 04:58:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38706 states. [2020-10-15 04:58:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38706 states to 38706 states and 61946 transitions. [2020-10-15 04:58:14,197 INFO L78 Accepts]: Start accepts. Automaton has 38706 states and 61946 transitions. Word has length 124 [2020-10-15 04:58:14,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:58:14,198 INFO L479 AbstractCegarLoop]: Abstraction has 38706 states and 61946 transitions. [2020-10-15 04:58:14,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 04:58:14,198 INFO L276 IsEmpty]: Start isEmpty. Operand 38706 states and 61946 transitions. [2020-10-15 04:58:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-15 04:58:14,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:58:14,266 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:14,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 04:58:14,266 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:58:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:58:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1800702022, now seen corresponding path program 1 times [2020-10-15 04:58:14,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:58:14,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496023543] [2020-10-15 04:58:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:58:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:14,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:14,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:14,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:14,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:15,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:19,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 04:58:19,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 04:58:19,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 04:58:19,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:19,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:58:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 04:58:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 04:58:19,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:19,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:58:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:19,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:58:19,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:19,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:19,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:19,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:19,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:19,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:19,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:19,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 04:58:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:19,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 04:58:19,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:58:19,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-15 04:58:19,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:19,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:58:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:58:19,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 04:58:19,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:19,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 04:58:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:19,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:19,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:58:19,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:19,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:19,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:19,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:19,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:58:19,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:58:19,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 04:58:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:19,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:58:19,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:19,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:19,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:19,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:58:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:58:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 04:58:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:19,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:58:19,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:19,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:19,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:19,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:19,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 04:58:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:19,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-15 04:58:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:19,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:58:19,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:19,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:58:19,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:19,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:58:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-15 04:58:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:19,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:19,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:58:19,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:58:19,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:19,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:58:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:19,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-15 04:58:19,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496023543] [2020-10-15 04:58:19,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:58:19,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:58:19,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018898460] [2020-10-15 04:58:19,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:58:19,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:58:19,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:58:19,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:58:19,629 INFO L87 Difference]: Start difference. First operand 38706 states and 61946 transitions. Second operand 9 states. [2020-10-15 04:58:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:58:24,818 INFO L93 Difference]: Finished difference Result 88409 states and 141323 transitions. [2020-10-15 04:58:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 04:58:24,819 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-10-15 04:58:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:58:24,995 INFO L225 Difference]: With dead ends: 88409 [2020-10-15 04:58:24,995 INFO L226 Difference]: Without dead ends: 49746 [2020-10-15 04:58:25,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-15 04:58:25,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49746 states. [2020-10-15 04:58:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49746 to 37963. [2020-10-15 04:58:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37963 states. [2020-10-15 04:58:28,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37963 states to 37963 states and 60411 transitions. [2020-10-15 04:58:28,241 INFO L78 Accepts]: Start accepts. Automaton has 37963 states and 60411 transitions. Word has length 147 [2020-10-15 04:58:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:58:28,241 INFO L479 AbstractCegarLoop]: Abstraction has 37963 states and 60411 transitions. [2020-10-15 04:58:28,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:58:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 37963 states and 60411 transitions. [2020-10-15 04:58:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-15 04:58:28,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:58:28,310 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:28,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 04:58:28,310 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:58:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:58:28,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1589632058, now seen corresponding path program 1 times [2020-10-15 04:58:28,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:58:28,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787795145] [2020-10-15 04:58:28,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:58:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:33,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 04:58:33,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:58:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 04:58:33,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:33,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:58:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-15 04:58:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-15 04:58:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:58:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:33,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:33,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:58:33,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:33,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:58:33,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:33,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:33,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:33,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:33,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:58:33,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 04:58:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:33,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 04:58:33,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:58:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-15 04:58:33,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:33,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:58:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:58:33,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 04:58:33,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:33,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 04:58:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:33,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:33,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:58:33,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:58:33,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:33,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:58:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 04:58:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:33,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:33,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:58:33,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:33,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:33,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:33,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:58:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:33,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 04:58:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:33,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:58:33,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:33,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:33,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 04:58:33,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-15 04:58:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:58:33,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 04:58:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:33,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:58:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:33,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-15 04:58:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:33,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:33,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:58:33,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:33,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:33,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:33,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:33,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:58:33,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:33,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-15 04:58:33,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787795145] [2020-10-15 04:58:33,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:58:33,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:58:33,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784724640] [2020-10-15 04:58:33,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:58:33,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:58:33,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:58:33,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:58:33,657 INFO L87 Difference]: Start difference. First operand 37963 states and 60411 transitions. Second operand 9 states. [2020-10-15 04:58:39,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:58:39,467 INFO L93 Difference]: Finished difference Result 88002 states and 140613 transitions. [2020-10-15 04:58:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 04:58:39,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2020-10-15 04:58:39,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:58:39,663 INFO L225 Difference]: With dead ends: 88002 [2020-10-15 04:58:39,663 INFO L226 Difference]: Without dead ends: 50074 [2020-10-15 04:58:39,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-15 04:58:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50074 states. [2020-10-15 04:58:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50074 to 36911. [2020-10-15 04:58:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36911 states. [2020-10-15 04:58:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36911 states to 36911 states and 58362 transitions. [2020-10-15 04:58:43,059 INFO L78 Accepts]: Start accepts. Automaton has 36911 states and 58362 transitions. Word has length 147 [2020-10-15 04:58:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:58:43,059 INFO L479 AbstractCegarLoop]: Abstraction has 36911 states and 58362 transitions. [2020-10-15 04:58:43,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:58:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 36911 states and 58362 transitions. [2020-10-15 04:58:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-15 04:58:43,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:58:43,125 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:43,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 04:58:43,125 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:58:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:58:43,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1420439168, now seen corresponding path program 1 times [2020-10-15 04:58:43,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:58:43,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199791252] [2020-10-15 04:58:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:58:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:43,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:43,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:43,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:46,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:48,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 04:58:48,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 04:58:48,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 04:58:48,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:48,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 04:58:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 04:58:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 04:58:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:48,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:58:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:48,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:58:48,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:48,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:58:48,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:48,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:48,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 04:58:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 04:58:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:48,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:48,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 04:58:48,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 04:58:48,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-15 04:58:48,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:48,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:58:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:58:48,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 04:58:48,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:48,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 04:58:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:48,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:48,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:58:48,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:48,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 04:58:48,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:48,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:48,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:58:48,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:48,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 04:58:48,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-15 04:58:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:48,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:48,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 04:58:48,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:58:48,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:48,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 04:58:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 04:58:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 04:58:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 04:58:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:48,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:58:48,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:48,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:48,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:58:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:58:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 04:58:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:48,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-15 04:58:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:48,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:48,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 04:58:48,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:48,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 04:58:48,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:48,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-15 04:58:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:58:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:58:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:58:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 04:58:48,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:58:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 04:58:48,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:58:48,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:58:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:58:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-15 04:58:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:58:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:58:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-15 04:58:48,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199791252] [2020-10-15 04:58:48,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 04:58:48,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 04:58:48,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302766804] [2020-10-15 04:58:48,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 04:58:48,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:58:48,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 04:58:48,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-15 04:58:48,551 INFO L87 Difference]: Start difference. First operand 36911 states and 58362 transitions. Second operand 13 states. [2020-10-15 04:58:48,733 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-10-15 04:58:49,322 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-15 04:58:51,459 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89