/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_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:39:54,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:39:54,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:39:54,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:39:54,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:39:54,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:39:54,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:39:54,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:39:54,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:39:54,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:39:54,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:39:54,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:39:54,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:39:54,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:39:54,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:39:54,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:39:54,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:39:54,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:39:54,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:39:54,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:39:54,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:39:54,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:39:54,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:39:54,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:39:54,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:39:54,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:39:54,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:39:54,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:39:54,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:39:54,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:39:54,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:39:54,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:39:54,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:39:54,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:39:54,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:39:54,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:39:54,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:39:54,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:39:54,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:39:54,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:39:54,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:39:54,300 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 09:39:54,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:39:54,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:39:54,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:39:54,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:39:54,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:39:54,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:39:54,343 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:39:54,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:39:54,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:39:54,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:39:54,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:39:54,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:39:54,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:39:54,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:39:54,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:39:54,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:39:54,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:39:54,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:39:54,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:39:54,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:39:54,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:39:54,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:39:54,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:39:54,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:39:54,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:39:54,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:39:54,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:39:54,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:39:54,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:39:54,349 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 09:39:54,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:39:54,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:39:54,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:39:54,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:39:54,671 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:39:54,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:39:54,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92be9c457/1b07ccc48bb9431c80ae2f13cfa148bb/FLAGfacd9caaa [2020-10-14 09:39:55,368 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:39:55,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:39:55,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92be9c457/1b07ccc48bb9431c80ae2f13cfa148bb/FLAGfacd9caaa [2020-10-14 09:39:55,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92be9c457/1b07ccc48bb9431c80ae2f13cfa148bb [2020-10-14 09:39:55,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:39:55,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:39:55,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:39:55,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:39:55,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:39:55,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:39:55" (1/1) ... [2020-10-14 09:39:55,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485dcc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:55, skipping insertion in model container [2020-10-14 09:39:55,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:39:55" (1/1) ... [2020-10-14 09:39:55,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:39:55,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:39:56,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:39:56,371 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:39:56,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:39:56,663 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:39:56,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56 WrapperNode [2020-10-14 09:39:56,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:39:56,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:39:56,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:39:56,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:39:56,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (1/1) ... [2020-10-14 09:39:56,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (1/1) ... [2020-10-14 09:39:56,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (1/1) ... [2020-10-14 09:39:56,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (1/1) ... [2020-10-14 09:39:56,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (1/1) ... [2020-10-14 09:39:56,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (1/1) ... [2020-10-14 09:39:56,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (1/1) ... [2020-10-14 09:39:56,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:39:56,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:39:56,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:39:56,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:39:56,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (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 09:39:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:39:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:39:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:39:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:39:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:39:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:39:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:39:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:39:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:39:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:39:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:39:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:39:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:39:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:39:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:39:56,929 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:39:56,929 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:39:56,929 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:39:56,929 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:39:56,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:39:56,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:39:56,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:39:59,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:39:59,090 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:39:59,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:39:59 BoogieIcfgContainer [2020-10-14 09:39:59,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:39:59,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:39:59,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:39:59,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:39:59,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:39:55" (1/3) ... [2020-10-14 09:39:59,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327331fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:39:59, skipping insertion in model container [2020-10-14 09:39:59,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:39:56" (2/3) ... [2020-10-14 09:39:59,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327331fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:39:59, skipping insertion in model container [2020-10-14 09:39:59,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:39:59" (3/3) ... [2020-10-14 09:39:59,109 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 09:39:59,119 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:39:59,127 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:39:59,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:39:59,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:39:59,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:39:59,172 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:39:59,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:39:59,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:39:59,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:39:59,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:39:59,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:39:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2020-10-14 09:39:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 09:39:59,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:39:59,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:39:59,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:39:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:39:59,243 INFO L82 PathProgramCache]: Analyzing trace with hash 558716282, now seen corresponding path program 1 times [2020-10-14 09:39:59,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:39:59,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987876348] [2020-10-14 09:39:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:39:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:01,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:02,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:03,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:05,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:05,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 09:40:05,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:40:05,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5261 [2020-10-14 09:40:05,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:05,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:05,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-14 09:40:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 09:40:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 09:40:06,402 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:06,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:06,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:06,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:06,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 09:40:06,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:06,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:06,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:06,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:06,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:06,594 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 09:40:06,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987876348] [2020-10-14 09:40:06,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:06,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:06,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748127676] [2020-10-14 09:40:06,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:06,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:06,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:06,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:06,623 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2020-10-14 09:40:07,422 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:40:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:12,959 INFO L93 Difference]: Finished difference Result 1209 states and 2150 transitions. [2020-10-14 09:40:12,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:12,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-14 09:40:12,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:12,992 INFO L225 Difference]: With dead ends: 1209 [2020-10-14 09:40:12,992 INFO L226 Difference]: Without dead ends: 978 [2020-10-14 09:40:12,998 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 09:40:13,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-14 09:40:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 976. [2020-10-14 09:40:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 976 states. [2020-10-14 09:40:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1694 transitions. [2020-10-14 09:40:13,135 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1694 transitions. Word has length 217 [2020-10-14 09:40:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:13,138 INFO L479 AbstractCegarLoop]: Abstraction has 976 states and 1694 transitions. [2020-10-14 09:40:13,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1694 transitions. [2020-10-14 09:40:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-14 09:40:13,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:13,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:13,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:40:13,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:13,153 INFO L82 PathProgramCache]: Analyzing trace with hash -103429761, now seen corresponding path program 1 times [2020-10-14 09:40:13,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:13,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127459238] [2020-10-14 09:40:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:13,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:15,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:16,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:18,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:18,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 09:40:18,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:40:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-14 09:40:18,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:18,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-14 09:40:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 09:40:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:19,551 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:19,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:19,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:19,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 09:40:19,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:19,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:19,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:19,687 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 09:40:19,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127459238] [2020-10-14 09:40:19,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:19,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:19,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97158280] [2020-10-14 09:40:19,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:19,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:19,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:19,694 INFO L87 Difference]: Start difference. First operand 976 states and 1694 transitions. Second operand 4 states. [2020-10-14 09:40:20,444 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:40:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:25,727 INFO L93 Difference]: Finished difference Result 1800 states and 3094 transitions. [2020-10-14 09:40:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:25,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2020-10-14 09:40:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:25,737 INFO L225 Difference]: With dead ends: 1800 [2020-10-14 09:40:25,737 INFO L226 Difference]: Without dead ends: 1376 [2020-10-14 09:40:25,741 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 09:40:25,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-14 09:40:25,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1374. [2020-10-14 09:40:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-14 09:40:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 2369 transitions. [2020-10-14 09:40:25,799 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 2369 transitions. Word has length 221 [2020-10-14 09:40:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:25,800 INFO L479 AbstractCegarLoop]: Abstraction has 1374 states and 2369 transitions. [2020-10-14 09:40:25,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 2369 transitions. [2020-10-14 09:40:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 09:40:25,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:25,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:25,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:40:25,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash 10460420, now seen corresponding path program 1 times [2020-10-14 09:40:25,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:25,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580192099] [2020-10-14 09:40:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:26,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:27,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:30,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:30,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-14 09:40:30,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:40:30,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 09:40:30,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:30,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-14 09:40:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 09:40:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:31,990 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:32,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:32,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:32,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:40:32,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:32,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:32,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:40:32,205 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 09:40:32,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580192099] [2020-10-14 09:40:32,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:32,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:32,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637434177] [2020-10-14 09:40:32,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:32,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:32,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:32,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:32,211 INFO L87 Difference]: Start difference. First operand 1374 states and 2369 transitions. Second operand 4 states. [2020-10-14 09:40:33,099 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:40:37,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:37,820 INFO L93 Difference]: Finished difference Result 2970 states and 5075 transitions. [2020-10-14 09:40:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:37,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-10-14 09:40:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:37,836 INFO L225 Difference]: With dead ends: 2970 [2020-10-14 09:40:37,836 INFO L226 Difference]: Without dead ends: 2148 [2020-10-14 09:40:37,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:40:37,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2020-10-14 09:40:37,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2146. [2020-10-14 09:40:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2146 states. [2020-10-14 09:40:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2146 states to 2146 states and 3673 transitions. [2020-10-14 09:40:37,928 INFO L78 Accepts]: Start accepts. Automaton has 2146 states and 3673 transitions. Word has length 225 [2020-10-14 09:40:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:37,934 INFO L479 AbstractCegarLoop]: Abstraction has 2146 states and 3673 transitions. [2020-10-14 09:40:37,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2146 states and 3673 transitions. [2020-10-14 09:40:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-14 09:40:37,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:37,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:37,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:40:37,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:37,940 INFO L82 PathProgramCache]: Analyzing trace with hash -756733175, now seen corresponding path program 1 times [2020-10-14 09:40:37,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:37,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972721411] [2020-10-14 09:40:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:38,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:38,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:43,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:43,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 09:40:43,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:40:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-14 09:40:43,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:43,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-14 09:40:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 09:40:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:43,985 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:43,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:43,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:44,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:44,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:44,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 09:40:44,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:44,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:44,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:44,099 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 09:40:44,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972721411] [2020-10-14 09:40:44,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:44,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:44,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114776893] [2020-10-14 09:40:44,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:44,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:44,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:44,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:44,102 INFO L87 Difference]: Start difference. First operand 2146 states and 3673 transitions. Second operand 4 states. [2020-10-14 09:40:44,846 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:40:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:40:49,735 INFO L93 Difference]: Finished difference Result 5238 states and 8899 transitions. [2020-10-14 09:40:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:40:49,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2020-10-14 09:40:49,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:40:49,757 INFO L225 Difference]: With dead ends: 5238 [2020-10-14 09:40:49,757 INFO L226 Difference]: Without dead ends: 3644 [2020-10-14 09:40:49,763 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 09:40:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2020-10-14 09:40:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3642. [2020-10-14 09:40:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3642 states. [2020-10-14 09:40:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 6189 transitions. [2020-10-14 09:40:49,933 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 6189 transitions. Word has length 229 [2020-10-14 09:40:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:40:49,934 INFO L479 AbstractCegarLoop]: Abstraction has 3642 states and 6189 transitions. [2020-10-14 09:40:49,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:40:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 6189 transitions. [2020-10-14 09:40:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 09:40:49,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:40:49,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:40:49,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:40:49,941 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:40:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:40:49,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2091208334, now seen corresponding path program 1 times [2020-10-14 09:40:49,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:40:49,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558974902] [2020-10-14 09:40:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:40:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:50,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:51,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:51,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:55,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:55,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 09:40:55,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:40:55,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 09:40:55,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:55,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:55,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:40:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-14 09:40:55,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 09:40:55,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:55,789 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:40:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:40:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:40:55,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:40:55,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:40:55,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:40:55,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:40:55,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:40:55,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:40:55,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:40:55,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:40:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:40:55,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:40:55,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:40:55,952 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 09:40:55,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558974902] [2020-10-14 09:40:55,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:40:55,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:40:55,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183063074] [2020-10-14 09:40:55,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:40:55,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:40:55,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:40:55,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:40:55,954 INFO L87 Difference]: Start difference. First operand 3642 states and 6189 transitions. Second operand 4 states. [2020-10-14 09:40:56,632 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-14 09:41:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:01,615 INFO L93 Difference]: Finished difference Result 9598 states and 16207 transitions. [2020-10-14 09:41:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:01,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 233 [2020-10-14 09:41:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:01,653 INFO L225 Difference]: With dead ends: 9598 [2020-10-14 09:41:01,654 INFO L226 Difference]: Without dead ends: 6508 [2020-10-14 09:41:01,671 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 09:41:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2020-10-14 09:41:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6506. [2020-10-14 09:41:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6506 states. [2020-10-14 09:41:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6506 states to 6506 states and 10909 transitions. [2020-10-14 09:41:01,976 INFO L78 Accepts]: Start accepts. Automaton has 6506 states and 10909 transitions. Word has length 233 [2020-10-14 09:41:01,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:01,977 INFO L479 AbstractCegarLoop]: Abstraction has 6506 states and 10909 transitions. [2020-10-14 09:41:01,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 6506 states and 10909 transitions. [2020-10-14 09:41:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 09:41:01,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:01,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:01,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:41:01,993 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:01,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:01,993 INFO L82 PathProgramCache]: Analyzing trace with hash -211590509, now seen corresponding path program 1 times [2020-10-14 09:41:01,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:01,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101596070] [2020-10-14 09:41:01,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:03,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:03,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:03,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:07,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:07,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 09:41:07,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:41:07,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 09:41:07,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:07,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:41:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:41:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 09:41:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:08,250 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:08,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:08,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 09:41:08,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:08,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:08,402 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 09:41:08,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101596070] [2020-10-14 09:41:08,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:08,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:41:08,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994115638] [2020-10-14 09:41:08,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:41:08,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:41:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:41:08,405 INFO L87 Difference]: Start difference. First operand 6506 states and 10909 transitions. Second operand 5 states. [2020-10-14 09:41:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:14,096 INFO L93 Difference]: Finished difference Result 19217 states and 32213 transitions. [2020-10-14 09:41:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:14,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2020-10-14 09:41:14,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:14,188 INFO L225 Difference]: With dead ends: 19217 [2020-10-14 09:41:14,189 INFO L226 Difference]: Without dead ends: 12782 [2020-10-14 09:41:14,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:41:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12782 states. [2020-10-14 09:41:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12782 to 12780. [2020-10-14 09:41:14,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12780 states. [2020-10-14 09:41:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12780 states to 12780 states and 21371 transitions. [2020-10-14 09:41:14,737 INFO L78 Accepts]: Start accepts. Automaton has 12780 states and 21371 transitions. Word has length 237 [2020-10-14 09:41:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:14,738 INFO L479 AbstractCegarLoop]: Abstraction has 12780 states and 21371 transitions. [2020-10-14 09:41:14,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:41:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 12780 states and 21371 transitions. [2020-10-14 09:41:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 09:41:14,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:14,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:14,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:41:14,754 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:14,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:14,755 INFO L82 PathProgramCache]: Analyzing trace with hash 694908309, now seen corresponding path program 1 times [2020-10-14 09:41:14,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:14,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553372976] [2020-10-14 09:41:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:15,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:15,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 09:41:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:41:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 09:41:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:19,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-14 09:41:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:41:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:20,683 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:20,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:20,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:20,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:20,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 09:41:20,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:20,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:20,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:20,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:41:20,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553372976] [2020-10-14 09:41:20,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:20,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:20,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947475168] [2020-10-14 09:41:20,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:20,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:20,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:20,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:20,770 INFO L87 Difference]: Start difference. First operand 12780 states and 21371 transitions. Second operand 4 states. [2020-10-14 09:41:21,465 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-14 09:41:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:27,056 INFO L93 Difference]: Finished difference Result 24015 states and 40132 transitions. [2020-10-14 09:41:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:41:27,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 09:41:27,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:27,104 INFO L225 Difference]: With dead ends: 24015 [2020-10-14 09:41:27,104 INFO L226 Difference]: Without dead ends: 17957 [2020-10-14 09:41:27,124 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 09:41:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17957 states. [2020-10-14 09:41:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17957 to 17955. [2020-10-14 09:41:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17955 states. [2020-10-14 09:41:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 29954 transitions. [2020-10-14 09:41:27,643 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 29954 transitions. Word has length 238 [2020-10-14 09:41:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:27,643 INFO L479 AbstractCegarLoop]: Abstraction has 17955 states and 29954 transitions. [2020-10-14 09:41:27,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 29954 transitions. [2020-10-14 09:41:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 09:41:27,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:27,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:27,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:41:27,653 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:27,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:27,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1440068704, now seen corresponding path program 1 times [2020-10-14 09:41:27,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:27,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283824638] [2020-10-14 09:41:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:28,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:28,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:29,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:32,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:32,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 09:41:32,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:41:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 09:41:32,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:32,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:32,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:32,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-14 09:41:32,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:41:32,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:33,483 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:33,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:33,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:33,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:41:33,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:33,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:33,553 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 09:41:33,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283824638] [2020-10-14 09:41:33,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:33,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:33,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576106867] [2020-10-14 09:41:33,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:33,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:33,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:33,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:33,556 INFO L87 Difference]: Start difference. First operand 17955 states and 29954 transitions. Second operand 4 states. [2020-10-14 09:41:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:38,634 INFO L93 Difference]: Finished difference Result 40119 states and 66964 transitions. [2020-10-14 09:41:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:41:38,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2020-10-14 09:41:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:38,688 INFO L225 Difference]: With dead ends: 40119 [2020-10-14 09:41:38,689 INFO L226 Difference]: Without dead ends: 23469 [2020-10-14 09:41:38,722 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 09:41:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23469 states. [2020-10-14 09:41:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23469 to 23179. [2020-10-14 09:41:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23179 states. [2020-10-14 09:41:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23179 states to 23179 states and 38490 transitions. [2020-10-14 09:41:39,303 INFO L78 Accepts]: Start accepts. Automaton has 23179 states and 38490 transitions. Word has length 238 [2020-10-14 09:41:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:39,303 INFO L479 AbstractCegarLoop]: Abstraction has 23179 states and 38490 transitions. [2020-10-14 09:41:39,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 23179 states and 38490 transitions. [2020-10-14 09:41:39,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 09:41:39,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:39,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:39,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:41:39,312 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:39,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:39,313 INFO L82 PathProgramCache]: Analyzing trace with hash -182676414, now seen corresponding path program 1 times [2020-10-14 09:41:39,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:39,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513793317] [2020-10-14 09:41:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:40,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:40,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:40,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:44,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:44,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 09:41:44,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:41:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 09:41:44,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:44,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:41:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 09:41:44,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 09:41:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:45,161 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:41:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:41:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:45,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:41:45,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:41:45,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:41:45,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:41:45,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:41:45,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:41:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:41:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:41:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:41:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:41:45,276 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 09:41:45,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513793317] [2020-10-14 09:41:45,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:41:45,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:41:45,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206046474] [2020-10-14 09:41:45,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:41:45,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:41:45,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:41:45,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:41:45,279 INFO L87 Difference]: Start difference. First operand 23179 states and 38490 transitions. Second operand 4 states. [2020-10-14 09:41:55,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:41:55,138 INFO L93 Difference]: Finished difference Result 68549 states and 113809 transitions. [2020-10-14 09:41:55,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:41:55,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 239 [2020-10-14 09:41:55,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:41:55,227 INFO L225 Difference]: With dead ends: 68549 [2020-10-14 09:41:55,227 INFO L226 Difference]: Without dead ends: 45526 [2020-10-14 09:41:55,282 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 09:41:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45526 states. [2020-10-14 09:41:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45526 to 45524. [2020-10-14 09:41:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45524 states. [2020-10-14 09:41:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45524 states to 45524 states and 75386 transitions. [2020-10-14 09:41:57,651 INFO L78 Accepts]: Start accepts. Automaton has 45524 states and 75386 transitions. Word has length 239 [2020-10-14 09:41:57,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:41:57,651 INFO L479 AbstractCegarLoop]: Abstraction has 45524 states and 75386 transitions. [2020-10-14 09:41:57,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:41:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 45524 states and 75386 transitions. [2020-10-14 09:41:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:41:57,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:41:57,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:41:57,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:41:57,660 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:41:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:41:57,660 INFO L82 PathProgramCache]: Analyzing trace with hash -271335086, now seen corresponding path program 1 times [2020-10-14 09:41:57,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:41:57,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873428533] [2020-10-14 09:41:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:41:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:41:57,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:57,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:58,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:58,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:59,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:41:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:02,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:02,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:42:02,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:42:02,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 09:42:02,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:02,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:42:02,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:42:02,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:03,410 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:42:03,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:03,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:42:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:03,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:03,479 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 09:42:03,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873428533] [2020-10-14 09:42:03,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:03,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:03,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182101895] [2020-10-14 09:42:03,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:03,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:03,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:03,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:03,482 INFO L87 Difference]: Start difference. First operand 45524 states and 75386 transitions. Second operand 4 states. [2020-10-14 09:42:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:14,725 INFO L93 Difference]: Finished difference Result 136295 states and 225656 transitions. [2020-10-14 09:42:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:14,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:42:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:14,912 INFO L225 Difference]: With dead ends: 136295 [2020-10-14 09:42:14,912 INFO L226 Difference]: Without dead ends: 90913 [2020-10-14 09:42:15,006 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 09:42:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90913 states. [2020-10-14 09:42:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90913 to 45571. [2020-10-14 09:42:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45571 states. [2020-10-14 09:42:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45571 states to 45571 states and 75460 transitions. [2020-10-14 09:42:17,168 INFO L78 Accepts]: Start accepts. Automaton has 45571 states and 75460 transitions. Word has length 240 [2020-10-14 09:42:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:17,168 INFO L479 AbstractCegarLoop]: Abstraction has 45571 states and 75460 transitions. [2020-10-14 09:42:17,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 45571 states and 75460 transitions. [2020-10-14 09:42:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:42:17,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:17,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:17,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:42:17,180 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:17,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:17,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2137652443, now seen corresponding path program 1 times [2020-10-14 09:42:17,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:17,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191407261] [2020-10-14 09:42:17,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:17,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:17,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:17,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:18,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:18,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:22,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:22,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:42:22,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:42:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-14 09:42:22,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:22,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-14 09:42:22,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 09:42:22,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:23,018 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:42:23,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:23,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:23,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:23,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:42:23,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:23,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:23,089 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 09:42:23,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191407261] [2020-10-14 09:42:23,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:23,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:23,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050214167] [2020-10-14 09:42:23,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:23,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:23,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:23,091 INFO L87 Difference]: Start difference. First operand 45571 states and 75460 transitions. Second operand 4 states. [2020-10-14 09:42:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:30,563 INFO L93 Difference]: Finished difference Result 108871 states and 180534 transitions. [2020-10-14 09:42:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:42:30,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:42:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:30,691 INFO L225 Difference]: With dead ends: 108871 [2020-10-14 09:42:30,691 INFO L226 Difference]: Without dead ends: 65685 [2020-10-14 09:42:30,758 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 09:42:30,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65685 states. [2020-10-14 09:42:32,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65685 to 64531. [2020-10-14 09:42:32,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64531 states. [2020-10-14 09:42:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64531 states to 64531 states and 106072 transitions. [2020-10-14 09:42:32,894 INFO L78 Accepts]: Start accepts. Automaton has 64531 states and 106072 transitions. Word has length 240 [2020-10-14 09:42:32,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:32,894 INFO L479 AbstractCegarLoop]: Abstraction has 64531 states and 106072 transitions. [2020-10-14 09:42:32,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:32,895 INFO L276 IsEmpty]: Start isEmpty. Operand 64531 states and 106072 transitions. [2020-10-14 09:42:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 09:42:32,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:32,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:32,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:42:32,902 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:32,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:32,903 INFO L82 PathProgramCache]: Analyzing trace with hash 435524292, now seen corresponding path program 1 times [2020-10-14 09:42:32,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:32,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203064235] [2020-10-14 09:42:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:33,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:33,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:38,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:38,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-14 09:42:38,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:42:38,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 09:42:38,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:38,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:42:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-14 09:42:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:42:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:42:38,734 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:42:38,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:38,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:38,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:38,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 09:42:38,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:38,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:38,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:38,817 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 09:42:38,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [203064235] [2020-10-14 09:42:38,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:38,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:42:38,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497031662] [2020-10-14 09:42:38,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:42:38,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:38,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:42:38,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:42:38,819 INFO L87 Difference]: Start difference. First operand 64531 states and 106072 transitions. Second operand 4 states. [2020-10-14 09:42:39,552 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-14 09:42:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:42:47,673 INFO L93 Difference]: Finished difference Result 123527 states and 203498 transitions. [2020-10-14 09:42:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:42:47,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-10-14 09:42:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:42:47,783 INFO L225 Difference]: With dead ends: 123527 [2020-10-14 09:42:47,783 INFO L226 Difference]: Without dead ends: 82165 [2020-10-14 09:42:47,826 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 09:42:47,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82165 states. [2020-10-14 09:42:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82165 to 82163. [2020-10-14 09:42:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82163 states. [2020-10-14 09:42:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82163 states to 82163 states and 135040 transitions. [2020-10-14 09:42:50,621 INFO L78 Accepts]: Start accepts. Automaton has 82163 states and 135040 transitions. Word has length 240 [2020-10-14 09:42:50,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:42:50,622 INFO L479 AbstractCegarLoop]: Abstraction has 82163 states and 135040 transitions. [2020-10-14 09:42:50,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:42:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 82163 states and 135040 transitions. [2020-10-14 09:42:50,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 09:42:50,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:42:50,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:42:50,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:42:50,628 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:42:50,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:42:50,629 INFO L82 PathProgramCache]: Analyzing trace with hash 281448016, now seen corresponding path program 1 times [2020-10-14 09:42:50,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:42:50,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772176489] [2020-10-14 09:42:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:42:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:50,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:51,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:54,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:54,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:55,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:55,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-14 09:42:55,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:42:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:42:55,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:55,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:42:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:42:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-14 09:42:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:56,689 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:42:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:42:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:42:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:42:56,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:42:56,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:42:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:42:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:42:56,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:42:56,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:42:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:42:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:42:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:42:56,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:42:56,836 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 09:42:56,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772176489] [2020-10-14 09:42:56,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:42:56,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:42:56,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852349338] [2020-10-14 09:42:56,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:42:56,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:42:56,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:42:56,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:42:56,839 INFO L87 Difference]: Start difference. First operand 82163 states and 135040 transitions. Second operand 5 states. [2020-10-14 09:43:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:43:10,237 INFO L93 Difference]: Finished difference Result 244514 states and 402026 transitions. [2020-10-14 09:43:10,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:43:10,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-14 09:43:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:43:10,467 INFO L225 Difference]: With dead ends: 244514 [2020-10-14 09:43:10,468 INFO L226 Difference]: Without dead ends: 162580 [2020-10-14 09:43:10,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:43:10,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162580 states. [2020-10-14 09:43:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162580 to 162578. [2020-10-14 09:43:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162578 states. [2020-10-14 09:43:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162578 states to 162578 states and 266708 transitions. [2020-10-14 09:43:19,913 INFO L78 Accepts]: Start accepts. Automaton has 162578 states and 266708 transitions. Word has length 241 [2020-10-14 09:43:19,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:43:19,913 INFO L479 AbstractCegarLoop]: Abstraction has 162578 states and 266708 transitions. [2020-10-14 09:43:19,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:43:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 162578 states and 266708 transitions. [2020-10-14 09:43:19,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 09:43:19,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:43:19,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:43:19,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:43:19,928 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:43:19,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:43:19,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1557464071, now seen corresponding path program 1 times [2020-10-14 09:43:19,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:43:19,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128588781] [2020-10-14 09:43:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:43:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:43:20,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:20,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:21,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:21,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:22,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:22,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:43:27,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 09:43:27,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:43:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7086 [2020-10-14 09:43:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:43:27,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:43:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:43:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:43:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-14 09:43:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:43:27,887 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 09:43:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:43:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:43:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:43:27,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:43:27,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:43:27,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:43:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:43:27,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:43:27,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:43:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:43:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:43:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:43:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:43:28,020 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 09:43:28,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128588781] [2020-10-14 09:43:28,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:43:28,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:43:28,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863192301] [2020-10-14 09:43:28,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:43:28,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:43:28,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:43:28,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:43:28,023 INFO L87 Difference]: Start difference. First operand 162578 states and 266708 transitions. Second operand 4 states.