/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:33:12,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:33:12,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:33:12,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:33:12,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:33:12,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:33:12,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:33:12,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:33:12,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:33:12,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:33:12,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:33:12,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:33:12,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:33:12,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:33:12,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:33:12,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:33:12,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:33:12,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:33:12,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:33:12,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:33:12,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:33:12,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:33:12,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:33:12,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:33:12,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:33:12,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:33:12,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:33:12,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:33:12,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:33:12,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:33:12,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:33:12,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:33:12,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:33:12,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:33:12,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:33:12,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:33:12,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:33:12,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:33:12,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:33:12,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:33:12,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:33:12,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:33:12,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:33:12,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:33:12,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:33:12,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:33:12,986 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:33:12,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:33:12,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:33:12,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:33:12,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:33:12,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:33:12,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:33:12,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:33:12,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:33:12,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:33:12,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:33:12,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:33:12,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:33:12,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:33:12,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:33:12,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:33:12,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:33:12,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:33:12,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:33:12,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:33:12,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:33:12,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:33:12,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:33:12,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:33:12,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:33:12,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:33:13,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:33:13,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:33:13,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:33:13,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:33:13,338 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:33:13,339 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 08:33:13,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dcc032e/16a9954d41d34130ac82de5b6830ec8d/FLAG718cd9bdf [2020-10-14 08:33:14,034 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:33:14,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 08:33:14,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dcc032e/16a9954d41d34130ac82de5b6830ec8d/FLAG718cd9bdf [2020-10-14 08:33:14,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1dcc032e/16a9954d41d34130ac82de5b6830ec8d [2020-10-14 08:33:14,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:33:14,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:33:14,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:33:14,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:33:14,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:33:14,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:33:14" (1/1) ... [2020-10-14 08:33:14,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:14, skipping insertion in model container [2020-10-14 08:33:14,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:33:14" (1/1) ... [2020-10-14 08:33:14,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:33:14,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:33:15,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:33:15,028 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:33:15,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:33:15,456 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:33:15,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15 WrapperNode [2020-10-14 08:33:15,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:33:15,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:33:15,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:33:15,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:33:15,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (1/1) ... [2020-10-14 08:33:15,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (1/1) ... [2020-10-14 08:33:15,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (1/1) ... [2020-10-14 08:33:15,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (1/1) ... [2020-10-14 08:33:15,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (1/1) ... [2020-10-14 08:33:15,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (1/1) ... [2020-10-14 08:33:15,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (1/1) ... [2020-10-14 08:33:15,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:33:15,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:33:15,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:33:15,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:33:15,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:33:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:33:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:33:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:33:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:33:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:33:15,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:33:15,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:33:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:33:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:33:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:33:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:33:15,717 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:33:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:33:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:33:15,718 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:33:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:33:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:33:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:33:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:33:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:33:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:33:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:33:18,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:33:18,088 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:33:18,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:33:18 BoogieIcfgContainer [2020-10-14 08:33:18,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:33:18,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:33:18,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:33:18,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:33:18,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:33:14" (1/3) ... [2020-10-14 08:33:18,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a6e8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:33:18, skipping insertion in model container [2020-10-14 08:33:18,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:33:15" (2/3) ... [2020-10-14 08:33:18,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a6e8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:33:18, skipping insertion in model container [2020-10-14 08:33:18,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:33:18" (3/3) ... [2020-10-14 08:33:18,105 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 08:33:18,116 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:33:18,125 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:33:18,139 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:33:18,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:33:18,167 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:33:18,167 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:33:18,167 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:33:18,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:33:18,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:33:18,168 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:33:18,168 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:33:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states. [2020-10-14 08:33:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-14 08:33:18,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:18,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:18,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:18,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1588752774, now seen corresponding path program 1 times [2020-10-14 08:33:18,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:18,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470691188] [2020-10-14 08:33:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:23,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:23,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 08:33:23,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:33:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-14 08:33:23,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:23,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:33:23,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 08:33:23,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 08:33:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 08:33:25,087 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:33:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:25,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:25,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:25,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:25,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 08:33:25,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:25,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:25,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:25,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:33:25,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470691188] [2020-10-14 08:33:25,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:25,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:33:25,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216658709] [2020-10-14 08:33:25,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:33:25,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:25,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:33:25,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:25,266 INFO L87 Difference]: Start difference. First operand 721 states. Second operand 4 states. [2020-10-14 08:33:26,013 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-14 08:33:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:33:31,095 INFO L93 Difference]: Finished difference Result 1098 states and 1954 transitions. [2020-10-14 08:33:31,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:33:31,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 188 [2020-10-14 08:33:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:33:31,121 INFO L225 Difference]: With dead ends: 1098 [2020-10-14 08:33:31,121 INFO L226 Difference]: Without dead ends: 896 [2020-10-14 08:33:31,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:33:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-14 08:33:31,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 894. [2020-10-14 08:33:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-10-14 08:33:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1572 transitions. [2020-10-14 08:33:31,238 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1572 transitions. Word has length 188 [2020-10-14 08:33:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:33:31,239 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1572 transitions. [2020-10-14 08:33:31,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:33:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1572 transitions. [2020-10-14 08:33:31,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 08:33:31,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:31,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:31,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:33:31,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:31,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1553139805, now seen corresponding path program 1 times [2020-10-14 08:33:31,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:31,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607474080] [2020-10-14 08:33:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:32,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:32,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:34,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:36,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:36,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-14 08:33:36,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:33:36,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 08:33:36,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:36,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:33:36,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 08:33:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 08:33:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 08:33:37,320 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:33:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:37,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:37,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:37,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:37,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:33:37,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:37,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:37,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:37,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:33:37,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607474080] [2020-10-14 08:33:37,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:37,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:33:37,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484503353] [2020-10-14 08:33:37,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:33:37,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:37,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:33:37,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:37,430 INFO L87 Difference]: Start difference. First operand 894 states and 1572 transitions. Second operand 4 states. [2020-10-14 08:33:38,072 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-14 08:33:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:33:42,855 INFO L93 Difference]: Finished difference Result 1606 states and 2780 transitions. [2020-10-14 08:33:42,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:33:42,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2020-10-14 08:33:42,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:33:42,867 INFO L225 Difference]: With dead ends: 1606 [2020-10-14 08:33:42,867 INFO L226 Difference]: Without dead ends: 1239 [2020-10-14 08:33:42,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:33:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-10-14 08:33:42,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2020-10-14 08:33:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2020-10-14 08:33:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2152 transitions. [2020-10-14 08:33:42,921 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2152 transitions. Word has length 192 [2020-10-14 08:33:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:33:42,922 INFO L479 AbstractCegarLoop]: Abstraction has 1237 states and 2152 transitions. [2020-10-14 08:33:42,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:33:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2152 transitions. [2020-10-14 08:33:42,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 08:33:42,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:42,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:42,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:33:42,927 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:42,929 INFO L82 PathProgramCache]: Analyzing trace with hash 436785329, now seen corresponding path program 1 times [2020-10-14 08:33:42,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:42,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120163818] [2020-10-14 08:33:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:43,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:45,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:45,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:46,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:48,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:48,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 08:33:48,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:33:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-14 08:33:48,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:48,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:48,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:33:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-14 08:33:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:33:48,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:49,126 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:33:49,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:33:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:49,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:33:49,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:33:49,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:33:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 08:33:49,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:33:49,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:33:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:33:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:33:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:33:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:33:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:33:49,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120163818] [2020-10-14 08:33:49,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:33:49,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:33:49,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690962317] [2020-10-14 08:33:49,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:33:49,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:33:49,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:33:49,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:33:49,306 INFO L87 Difference]: Start difference. First operand 1237 states and 2152 transitions. Second operand 4 states. [2020-10-14 08:33:50,143 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-14 08:33:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:33:55,224 INFO L93 Difference]: Finished difference Result 2613 states and 4478 transitions. [2020-10-14 08:33:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:33:55,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 196 [2020-10-14 08:33:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:33:55,239 INFO L225 Difference]: With dead ends: 2613 [2020-10-14 08:33:55,239 INFO L226 Difference]: Without dead ends: 1903 [2020-10-14 08:33:55,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:33:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-14 08:33:55,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1901. [2020-10-14 08:33:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1901 states. [2020-10-14 08:33:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 3268 transitions. [2020-10-14 08:33:55,318 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 3268 transitions. Word has length 196 [2020-10-14 08:33:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:33:55,318 INFO L479 AbstractCegarLoop]: Abstraction has 1901 states and 3268 transitions. [2020-10-14 08:33:55,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:33:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 3268 transitions. [2020-10-14 08:33:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-14 08:33:55,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:33:55,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:33:55,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:33:55,323 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:33:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:33:55,324 INFO L82 PathProgramCache]: Analyzing trace with hash -2039403893, now seen corresponding path program 1 times [2020-10-14 08:33:55,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:33:55,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565786501] [2020-10-14 08:33:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:33:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:33:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:55,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:56,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:33:57,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:00,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:00,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 08:34:00,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:34:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 08:34:00,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:00,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:34:00,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-14 08:34:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:34:00,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:01,202 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:34:01,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:34:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:01,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:01,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:01,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:34:01,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:34:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:34:01,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:01,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:34:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:34:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:34:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:34:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:34:01,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565786501] [2020-10-14 08:34:01,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:34:01,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:34:01,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660203139] [2020-10-14 08:34:01,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:34:01,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:34:01,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:34:01,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:34:01,307 INFO L87 Difference]: Start difference. First operand 1901 states and 3268 transitions. Second operand 4 states. [2020-10-14 08:34:01,995 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-14 08:34:07,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:34:07,546 INFO L93 Difference]: Finished difference Result 4561 states and 7742 transitions. [2020-10-14 08:34:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:34:07,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2020-10-14 08:34:07,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:34:07,564 INFO L225 Difference]: With dead ends: 4561 [2020-10-14 08:34:07,564 INFO L226 Difference]: Without dead ends: 3187 [2020-10-14 08:34:07,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:34:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2020-10-14 08:34:07,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3185. [2020-10-14 08:34:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3185 states. [2020-10-14 08:34:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 5412 transitions. [2020-10-14 08:34:07,687 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 5412 transitions. Word has length 200 [2020-10-14 08:34:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:34:07,688 INFO L479 AbstractCegarLoop]: Abstraction has 3185 states and 5412 transitions. [2020-10-14 08:34:07,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:34:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 5412 transitions. [2020-10-14 08:34:07,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 08:34:07,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:34:07,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:34:07,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:34:07,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:34:07,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:34:07,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1123134450, now seen corresponding path program 1 times [2020-10-14 08:34:07,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:34:07,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945637009] [2020-10-14 08:34:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:34:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:07,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:08,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:09,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:12,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:12,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-14 08:34:12,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:34:12,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:34:12,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:12,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:34:12,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 08:34:12,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 08:34:12,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:13,479 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:34:13,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:34:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:13,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:34:13,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:34:13,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:34:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:13,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:34:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:34:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:34:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:34:13,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945637009] [2020-10-14 08:34:13,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:34:13,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:34:13,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447013684] [2020-10-14 08:34:13,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:34:13,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:34:13,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:34:13,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:34:13,568 INFO L87 Difference]: Start difference. First operand 3185 states and 5412 transitions. Second operand 4 states. [2020-10-14 08:34:14,276 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 369 [2020-10-14 08:34:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:34:18,782 INFO L93 Difference]: Finished difference Result 8293 states and 13942 transitions. [2020-10-14 08:34:18,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:34:18,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2020-10-14 08:34:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:34:18,814 INFO L225 Difference]: With dead ends: 8293 [2020-10-14 08:34:18,815 INFO L226 Difference]: Without dead ends: 5635 [2020-10-14 08:34:18,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:34:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5635 states. [2020-10-14 08:34:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5635 to 5633. [2020-10-14 08:34:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5633 states. [2020-10-14 08:34:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 9396 transitions. [2020-10-14 08:34:19,217 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 9396 transitions. Word has length 204 [2020-10-14 08:34:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:34:19,219 INFO L479 AbstractCegarLoop]: Abstraction has 5633 states and 9396 transitions. [2020-10-14 08:34:19,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:34:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 9396 transitions. [2020-10-14 08:34:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 08:34:19,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:34:19,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:34:19,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:34:19,227 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:34:19,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:34:19,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1985651541, now seen corresponding path program 1 times [2020-10-14 08:34:19,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:34:19,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643892356] [2020-10-14 08:34:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:34:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:20,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:20,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:21,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:21,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:24,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 08:34:24,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:34:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 08:34:24,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:24,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:34:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-14 08:34:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:34:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:25,025 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:34:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:34:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:25,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:25,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:34:25,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:34:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 08:34:25,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:25,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:34:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:34:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:34:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:34:25,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643892356] [2020-10-14 08:34:25,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:34:25,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:34:25,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388925164] [2020-10-14 08:34:25,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:34:25,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:34:25,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:34:25,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:34:25,117 INFO L87 Difference]: Start difference. First operand 5633 states and 9396 transitions. Second operand 4 states. [2020-10-14 08:34:25,779 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 371 [2020-10-14 08:34:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:34:30,940 INFO L93 Difference]: Finished difference Result 10496 states and 17482 transitions. [2020-10-14 08:34:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:34:30,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-10-14 08:34:30,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:34:30,975 INFO L225 Difference]: With dead ends: 10496 [2020-10-14 08:34:30,976 INFO L226 Difference]: Without dead ends: 7854 [2020-10-14 08:34:30,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:34:30,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7854 states. [2020-10-14 08:34:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7854 to 7852. [2020-10-14 08:34:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7852 states. [2020-10-14 08:34:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7852 states to 7852 states and 13060 transitions. [2020-10-14 08:34:31,251 INFO L78 Accepts]: Start accepts. Automaton has 7852 states and 13060 transitions. Word has length 208 [2020-10-14 08:34:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:34:31,252 INFO L479 AbstractCegarLoop]: Abstraction has 7852 states and 13060 transitions. [2020-10-14 08:34:31,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:34:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 7852 states and 13060 transitions. [2020-10-14 08:34:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 08:34:31,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:34:31,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:34:31,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:34:31,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:34:31,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:34:31,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1701289426, now seen corresponding path program 1 times [2020-10-14 08:34:31,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:34:31,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039832466] [2020-10-14 08:34:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:34:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:31,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:32,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:32,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:32,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:36,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:36,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 08:34:36,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:34:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 08:34:36,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:36,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:34:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 08:34:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 08:34:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:37,089 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:34:37,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:34:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:37,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:37,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:37,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:34:37,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:34:37,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:34:37,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:37,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:37,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:34:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:34:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:34:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:34:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:34:37,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039832466] [2020-10-14 08:34:37,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:34:37,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:34:37,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426526668] [2020-10-14 08:34:37,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:34:37,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:34:37,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:34:37,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:34:37,169 INFO L87 Difference]: Start difference. First operand 7852 states and 13060 transitions. Second operand 4 states. [2020-10-14 08:34:37,850 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 371 [2020-10-14 08:34:42,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:34:42,741 INFO L93 Difference]: Finished difference Result 14636 states and 24326 transitions. [2020-10-14 08:34:42,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:34:42,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2020-10-14 08:34:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:34:42,779 INFO L225 Difference]: With dead ends: 14636 [2020-10-14 08:34:42,779 INFO L226 Difference]: Without dead ends: 10894 [2020-10-14 08:34:42,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:34:42,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10894 states. [2020-10-14 08:34:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10894 to 10892. [2020-10-14 08:34:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10892 states. [2020-10-14 08:34:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10892 states to 10892 states and 18064 transitions. [2020-10-14 08:34:43,205 INFO L78 Accepts]: Start accepts. Automaton has 10892 states and 18064 transitions. Word has length 208 [2020-10-14 08:34:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:34:43,206 INFO L479 AbstractCegarLoop]: Abstraction has 10892 states and 18064 transitions. [2020-10-14 08:34:43,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:34:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 10892 states and 18064 transitions. [2020-10-14 08:34:43,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 08:34:43,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:34:43,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:34:43,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:34:43,211 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:34:43,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:34:43,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2055670813, now seen corresponding path program 1 times [2020-10-14 08:34:43,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:34:43,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301984147] [2020-10-14 08:34:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:34:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:43,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:43,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:44,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:48,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:48,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 08:34:48,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:34:48,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 08:34:48,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:48,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:34:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:34:48,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 08:34:48,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:49,050 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:34:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:34:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:49,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:49,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:34:49,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:34:49,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:34:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:34:49,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:34:49,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:34:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:34:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:34:49,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:34:49,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:34:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:34:49,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301984147] [2020-10-14 08:34:49,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:34:49,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:34:49,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625618917] [2020-10-14 08:34:49,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:34:49,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:34:49,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:34:49,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:34:49,151 INFO L87 Difference]: Start difference. First operand 10892 states and 18064 transitions. Second operand 5 states. [2020-10-14 08:34:55,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:34:55,491 INFO L93 Difference]: Finished difference Result 32335 states and 53634 transitions. [2020-10-14 08:34:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:34:55,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-14 08:34:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:34:55,540 INFO L225 Difference]: With dead ends: 32335 [2020-10-14 08:34:55,540 INFO L226 Difference]: Without dead ends: 21516 [2020-10-14 08:34:55,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:34:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21516 states. [2020-10-14 08:34:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21516 to 21514. [2020-10-14 08:34:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21514 states. [2020-10-14 08:34:56,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21514 states to 21514 states and 35599 transitions. [2020-10-14 08:34:56,225 INFO L78 Accepts]: Start accepts. Automaton has 21514 states and 35599 transitions. Word has length 208 [2020-10-14 08:34:56,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:34:56,226 INFO L479 AbstractCegarLoop]: Abstraction has 21514 states and 35599 transitions. [2020-10-14 08:34:56,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:34:56,226 INFO L276 IsEmpty]: Start isEmpty. Operand 21514 states and 35599 transitions. [2020-10-14 08:34:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 08:34:56,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:34:56,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:34:56,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:34:56,233 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:34:56,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:34:56,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1431734765, now seen corresponding path program 1 times [2020-10-14 08:34:56,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:34:56,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490045074] [2020-10-14 08:34:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:34:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:34:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:56,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:57,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:34:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:01,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:01,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 08:35:01,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:35:01,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:35:01,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:01,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:35:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 08:35:01,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 08:35:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:35:02,031 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:35:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:02,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:02,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:02,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:02,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:35:02,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:02,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:02,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:02,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:02,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:35:02,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490045074] [2020-10-14 08:35:02,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:35:02,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:35:02,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122524575] [2020-10-14 08:35:02,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:35:02,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:35:02,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:35:02,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:35:02,128 INFO L87 Difference]: Start difference. First operand 21514 states and 35599 transitions. Second operand 4 states. [2020-10-14 08:35:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:35:10,862 INFO L93 Difference]: Finished difference Result 63523 states and 105115 transitions. [2020-10-14 08:35:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:35:10,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2020-10-14 08:35:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:35:10,976 INFO L225 Difference]: With dead ends: 63523 [2020-10-14 08:35:10,976 INFO L226 Difference]: Without dead ends: 42213 [2020-10-14 08:35:11,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:35:11,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42213 states. [2020-10-14 08:35:12,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42213 to 42211. [2020-10-14 08:35:12,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42211 states. [2020-10-14 08:35:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42211 states to 42211 states and 69649 transitions. [2020-10-14 08:35:12,178 INFO L78 Accepts]: Start accepts. Automaton has 42211 states and 69649 transitions. Word has length 210 [2020-10-14 08:35:12,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:35:12,178 INFO L479 AbstractCegarLoop]: Abstraction has 42211 states and 69649 transitions. [2020-10-14 08:35:12,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:35:12,178 INFO L276 IsEmpty]: Start isEmpty. Operand 42211 states and 69649 transitions. [2020-10-14 08:35:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-14 08:35:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:35:12,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:35:12,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:35:12,190 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:35:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:35:12,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1108369414, now seen corresponding path program 1 times [2020-10-14 08:35:12,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:35:12,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953202760] [2020-10-14 08:35:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:35:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:12,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:17,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:17,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 08:35:17,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:35:17,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-14 08:35:17,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:17,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:35:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 169 [2020-10-14 08:35:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 08:35:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:18,058 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:35:18,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:18,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:18,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:18,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:35:18,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:18,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:35:18,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953202760] [2020-10-14 08:35:18,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:35:18,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:35:18,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204552147] [2020-10-14 08:35:18,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:35:18,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:35:18,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:35:18,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:35:18,124 INFO L87 Difference]: Start difference. First operand 42211 states and 69649 transitions. Second operand 4 states. [2020-10-14 08:35:18,829 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 371 [2020-10-14 08:35:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:35:25,557 INFO L93 Difference]: Finished difference Result 79175 states and 131499 transitions. [2020-10-14 08:35:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:35:25,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 210 [2020-10-14 08:35:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:35:25,654 INFO L225 Difference]: With dead ends: 79175 [2020-10-14 08:35:25,654 INFO L226 Difference]: Without dead ends: 58109 [2020-10-14 08:35:25,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:35:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58109 states. [2020-10-14 08:35:27,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58109 to 58107. [2020-10-14 08:35:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58107 states. [2020-10-14 08:35:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58107 states to 58107 states and 96085 transitions. [2020-10-14 08:35:27,301 INFO L78 Accepts]: Start accepts. Automaton has 58107 states and 96085 transitions. Word has length 210 [2020-10-14 08:35:27,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:35:27,301 INFO L479 AbstractCegarLoop]: Abstraction has 58107 states and 96085 transitions. [2020-10-14 08:35:27,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:35:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 58107 states and 96085 transitions. [2020-10-14 08:35:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 08:35:27,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:35:27,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:35:27,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:35:27,308 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:35:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:35:27,309 INFO L82 PathProgramCache]: Analyzing trace with hash -910634319, now seen corresponding path program 1 times [2020-10-14 08:35:27,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:35:27,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390783179] [2020-10-14 08:35:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:35:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:27,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:27,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:28,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:28,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:28,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:29,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:29,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:32,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:32,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 08:35:32,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:35:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:35:32,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:32,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:35:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:35:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 08:35:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:33,145 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:35:33,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:33,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:33,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:33,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:35:33,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:33,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:33,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:33,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:35:33,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390783179] [2020-10-14 08:35:33,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:35:33,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:35:33,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866312040] [2020-10-14 08:35:33,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:35:33,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:35:33,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:35:33,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:35:33,248 INFO L87 Difference]: Start difference. First operand 58107 states and 96085 transitions. Second operand 5 states. [2020-10-14 08:35:42,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:35:42,007 INFO L93 Difference]: Finished difference Result 172714 states and 285681 transitions. [2020-10-14 08:35:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:35:42,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-14 08:35:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:35:42,218 INFO L225 Difference]: With dead ends: 172714 [2020-10-14 08:35:42,218 INFO L226 Difference]: Without dead ends: 114736 [2020-10-14 08:35:42,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:35:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114736 states. [2020-10-14 08:35:47,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114736 to 114734. [2020-10-14 08:35:47,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114734 states. [2020-10-14 08:35:48,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114734 states to 114734 states and 189349 transitions. [2020-10-14 08:35:48,031 INFO L78 Accepts]: Start accepts. Automaton has 114734 states and 189349 transitions. Word has length 211 [2020-10-14 08:35:48,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:35:48,032 INFO L479 AbstractCegarLoop]: Abstraction has 114734 states and 189349 transitions. [2020-10-14 08:35:48,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:35:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 114734 states and 189349 transitions. [2020-10-14 08:35:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 08:35:48,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:35:48,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:35:48,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:35:48,045 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:35:48,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:35:48,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1914528209, now seen corresponding path program 1 times [2020-10-14 08:35:48,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:35:48,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969268195] [2020-10-14 08:35:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:35:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:48,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:48,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:53,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:53,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 08:35:53,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:35:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:35:53,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:53,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:35:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:35:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 08:35:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:35:53,825 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:35:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:53,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:53,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:53,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:53,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:35:53,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:53,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:53,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:53,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:53,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:35:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:35:53,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969268195] [2020-10-14 08:35:53,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:35:53,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:35:53,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010952352] [2020-10-14 08:35:53,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:35:53,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:35:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:35:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:35:53,923 INFO L87 Difference]: Start difference. First operand 114734 states and 189349 transitions. Second operand 4 states. [2020-10-14 08:36:12,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:36:12,876 INFO L93 Difference]: Finished difference Result 339687 states and 560912 transitions. [2020-10-14 08:36:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:36:12,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-10-14 08:36:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:36:13,257 INFO L225 Difference]: With dead ends: 339687 [2020-10-14 08:36:13,258 INFO L226 Difference]: Without dead ends: 225397 [2020-10-14 08:36:13,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:36:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225397 states. [2020-10-14 08:36:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225397 to 225395. [2020-10-14 08:36:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225395 states. [2020-10-14 08:36:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225395 states to 225395 states and 371141 transitions. [2020-10-14 08:36:23,775 INFO L78 Accepts]: Start accepts. Automaton has 225395 states and 371141 transitions. Word has length 213 [2020-10-14 08:36:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:36:23,776 INFO L479 AbstractCegarLoop]: Abstraction has 225395 states and 371141 transitions. [2020-10-14 08:36:23,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:36:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 225395 states and 371141 transitions. [2020-10-14 08:36:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-14 08:36:23,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:36:23,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:36:23,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:36:23,790 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:36:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:36:23,790 INFO L82 PathProgramCache]: Analyzing trace with hash 233101397, now seen corresponding path program 1 times [2020-10-14 08:36:23,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:36:23,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949134094] [2020-10-14 08:36:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:36:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:36:23,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:24,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:26,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:30,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:36:30,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 08:36:30,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:36:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6304 [2020-10-14 08:36:30,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:36:30,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:36:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:36:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:36:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 08:36:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:36:30,969 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 367 [2020-10-14 08:36:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:36:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:36:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:30,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:36:30,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:36:30,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:36:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:36:30,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:36:30,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:36:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:36:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:36:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:36:30,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:36:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:36:31,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949134094] [2020-10-14 08:36:31,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:36:31,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:36:31,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878698546] [2020-10-14 08:36:31,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:36:31,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:36:31,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:36:31,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:36:31,114 INFO L87 Difference]: Start difference. First operand 225395 states and 371141 transitions. Second operand 5 states.