/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:49:15,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:49:15,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:49:15,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:49:15,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:49:15,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:49:15,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:49:15,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:49:15,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:49:15,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:49:15,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:49:15,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:49:15,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:49:15,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:49:15,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:49:15,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:49:15,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:49:15,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:49:15,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:49:15,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:49:15,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:49:15,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:49:15,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:49:15,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:49:15,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:49:15,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:49:15,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:49:15,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:49:15,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:49:15,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:49:15,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:49:15,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:49:15,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:49:15,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:49:15,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:49:15,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:49:15,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:49:15,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:49:15,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:49:15,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:49:15,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:49:15,309 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 [2020-10-12 19:49:15,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:49:15,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:49:15,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:49:15,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:49:15,334 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:49:15,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:49:15,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:49:15,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:49:15,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:49:15,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:49:15,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:49:15,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:49:15,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:49:15,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:49:15,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:49:15,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:49:15,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:49:15,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:49:15,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:49:15,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:49:15,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:49:15,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:49:15,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:49:15,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:49:15,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:49:15,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:49:15,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:49:15,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:49:15,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:49:15,339 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:49:15,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:49:15,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:49:15,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:49:15,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:49:15,662 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:49:15,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-12 19:49:15,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1efc95d5c/fbcd7404b56742498e12d2fd0e25ce40/FLAG1738971f3 [2020-10-12 19:49:16,287 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:49:16,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-12 19:49:16,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1efc95d5c/fbcd7404b56742498e12d2fd0e25ce40/FLAG1738971f3 [2020-10-12 19:49:16,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1efc95d5c/fbcd7404b56742498e12d2fd0e25ce40 [2020-10-12 19:49:16,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:49:16,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:49:16,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:49:16,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:49:16,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:49:16,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:49:16" (1/1) ... [2020-10-12 19:49:16,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243026c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:16, skipping insertion in model container [2020-10-12 19:49:16,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:49:16" (1/1) ... [2020-10-12 19:49:16,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:49:16,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:49:17,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:49:17,144 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:49:17,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:49:17,270 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:49:17,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17 WrapperNode [2020-10-12 19:49:17,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:49:17,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:49:17,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:49:17,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:49:17,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (1/1) ... [2020-10-12 19:49:17,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (1/1) ... [2020-10-12 19:49:17,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (1/1) ... [2020-10-12 19:49:17,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (1/1) ... [2020-10-12 19:49:17,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (1/1) ... [2020-10-12 19:49:17,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (1/1) ... [2020-10-12 19:49:17,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (1/1) ... [2020-10-12 19:49:17,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:49:17,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:49:17,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:49:17,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:49:17,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (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 [2020-10-12 19:49:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:49:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:49:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:49:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:49:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:49:17,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:49:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:49:17,417 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:49:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:49:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:49:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:49:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:49:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:49:17,418 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:49:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:49:17,419 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:49:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:49:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:49:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-12 19:49:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-12 19:49:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:49:17,420 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:49:17,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:49:17,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:49:17,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:49:18,265 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:49:18,265 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:49:18,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:49:18 BoogieIcfgContainer [2020-10-12 19:49:18,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:49:18,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:49:18,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:49:18,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:49:18,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:49:16" (1/3) ... [2020-10-12 19:49:18,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd5e01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:49:18, skipping insertion in model container [2020-10-12 19:49:18,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:17" (2/3) ... [2020-10-12 19:49:18,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd5e01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:49:18, skipping insertion in model container [2020-10-12 19:49:18,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:49:18" (3/3) ... [2020-10-12 19:49:18,281 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.BOUNDED-16.pals.c.v+cfa-reducer.c [2020-10-12 19:49:18,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:49:18,301 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:49:18,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:49:18,338 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:49:18,338 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:49:18,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:49:18,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:49:18,339 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:49:18,339 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:49:18,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:49:18,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:49:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-10-12 19:49:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 19:49:18,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:18,379 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] [2020-10-12 19:49:18,379 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:18,386 INFO L82 PathProgramCache]: Analyzing trace with hash 351638092, now seen corresponding path program 1 times [2020-10-12 19:49:18,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:18,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699589832] [2020-10-12 19:49:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:23,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:23,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 19:49:23,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:49:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:49:23,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:49:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 19:49:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:49:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:49:24,467 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:49:24,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:24,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:24,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:24,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:24,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:49:24,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:49:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:24,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699589832] [2020-10-12 19:49:24,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:24,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:49:24,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630406558] [2020-10-12 19:49:24,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:49:24,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:24,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:49:24,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:49:24,613 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-10-12 19:49:25,127 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 19:49:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:26,497 INFO L93 Difference]: Finished difference Result 342 states and 561 transitions. [2020-10-12 19:49:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:49:26,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-12 19:49:26,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:26,516 INFO L225 Difference]: With dead ends: 342 [2020-10-12 19:49:26,516 INFO L226 Difference]: Without dead ends: 240 [2020-10-12 19:49:26,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:49:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-12 19:49:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2020-10-12 19:49:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-12 19:49:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 339 transitions. [2020-10-12 19:49:26,629 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 339 transitions. Word has length 105 [2020-10-12 19:49:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:26,630 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 339 transitions. [2020-10-12 19:49:26,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:49:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 339 transitions. [2020-10-12 19:49:26,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 19:49:26,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:26,641 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] [2020-10-12 19:49:26,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:49:26,646 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:26,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:26,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1502344590, now seen corresponding path program 1 times [2020-10-12 19:49:26,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:26,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861011227] [2020-10-12 19:49:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:31,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:31,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 19:49:31,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:49:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:49:31,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:49:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:49:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 19:49:31,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 19:49:32,136 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:49:32,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:32,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:32,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:32,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:32,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 19:49:32,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:49:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:32,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:49:32,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:32,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861011227] [2020-10-12 19:49:32,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:32,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:49:32,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362533055] [2020-10-12 19:49:32,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:49:32,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:32,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:49:32,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:49:32,232 INFO L87 Difference]: Start difference. First operand 238 states and 339 transitions. Second operand 6 states. [2020-10-12 19:49:32,597 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 19:49:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:33,375 INFO L93 Difference]: Finished difference Result 577 states and 879 transitions. [2020-10-12 19:49:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:49:33,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-12 19:49:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:33,379 INFO L225 Difference]: With dead ends: 577 [2020-10-12 19:49:33,379 INFO L226 Difference]: Without dead ends: 407 [2020-10-12 19:49:33,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:49:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-12 19:49:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2020-10-12 19:49:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-12 19:49:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 606 transitions. [2020-10-12 19:49:33,420 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 606 transitions. Word has length 106 [2020-10-12 19:49:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:33,421 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 606 transitions. [2020-10-12 19:49:33,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:49:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 606 transitions. [2020-10-12 19:49:33,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 19:49:33,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:33,423 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] [2020-10-12 19:49:33,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:49:33,423 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:33,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1051205591, now seen corresponding path program 1 times [2020-10-12 19:49:33,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:33,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156905410] [2020-10-12 19:49:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:33,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:33,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:33,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:33,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:38,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:38,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 19:49:38,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:49:38,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:49:38,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:38,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:49:38,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:49:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 19:49:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:38,854 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:49:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:38,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:38,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:38,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:49:38,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:38,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:38,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156905410] [2020-10-12 19:49:38,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:38,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:49:38,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846572516] [2020-10-12 19:49:38,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:49:38,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:38,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:49:38,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:49:38,930 INFO L87 Difference]: Start difference. First operand 405 states and 606 transitions. Second operand 11 states. [2020-10-12 19:49:39,252 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-12 19:49:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:41,121 INFO L93 Difference]: Finished difference Result 5797 states and 9214 transitions. [2020-10-12 19:49:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:49:41,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-12 19:49:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:41,157 INFO L225 Difference]: With dead ends: 5797 [2020-10-12 19:49:41,157 INFO L226 Difference]: Without dead ends: 5460 [2020-10-12 19:49:41,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:49:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2020-10-12 19:49:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 740. [2020-10-12 19:49:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2020-10-12 19:49:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1135 transitions. [2020-10-12 19:49:41,293 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1135 transitions. Word has length 106 [2020-10-12 19:49:41,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:41,297 INFO L479 AbstractCegarLoop]: Abstraction has 740 states and 1135 transitions. [2020-10-12 19:49:41,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:49:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1135 transitions. [2020-10-12 19:49:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:49:41,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:41,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:41,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:49:41,309 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:41,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1105670916, now seen corresponding path program 1 times [2020-10-12 19:49:41,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:41,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881923906] [2020-10-12 19:49:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:41,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:49:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:49:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:49:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:49:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:49:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 19:49:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:46,720 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:49:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:46,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:46,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:46,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:49:46,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:49:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:49:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:46,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881923906] [2020-10-12 19:49:46,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:46,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:49:46,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101578389] [2020-10-12 19:49:46,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:49:46,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:46,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:49:46,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:49:46,807 INFO L87 Difference]: Start difference. First operand 740 states and 1135 transitions. Second operand 7 states. [2020-10-12 19:49:47,142 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-12 19:49:48,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:48,124 INFO L93 Difference]: Finished difference Result 2521 states and 3951 transitions. [2020-10-12 19:49:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:49:48,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-12 19:49:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:48,135 INFO L225 Difference]: With dead ends: 2521 [2020-10-12 19:49:48,136 INFO L226 Difference]: Without dead ends: 1849 [2020-10-12 19:49:48,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:49:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-10-12 19:49:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 749. [2020-10-12 19:49:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-12 19:49:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1146 transitions. [2020-10-12 19:49:48,231 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1146 transitions. Word has length 108 [2020-10-12 19:49:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:48,233 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 1146 transitions. [2020-10-12 19:49:48,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:49:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1146 transitions. [2020-10-12 19:49:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:49:48,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:48,235 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] [2020-10-12 19:49:48,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:49:48,236 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:48,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1343266742, now seen corresponding path program 1 times [2020-10-12 19:49:48,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:48,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615470919] [2020-10-12 19:49:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:48,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:48,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:53,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:53,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:49:53,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:49:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:49:53,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:49:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:49:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 19:49:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:53,707 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:49:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:53,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:53,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:53,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:53,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 19:49:53,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:49:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:49:53,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:49:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:53,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615470919] [2020-10-12 19:49:53,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:53,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:49:53,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294975195] [2020-10-12 19:49:53,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:49:53,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:53,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:49:53,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:49:53,837 INFO L87 Difference]: Start difference. First operand 749 states and 1146 transitions. Second operand 7 states. [2020-10-12 19:49:54,168 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-12 19:49:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:55,382 INFO L93 Difference]: Finished difference Result 2449 states and 3834 transitions. [2020-10-12 19:49:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:49:55,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-12 19:49:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:55,392 INFO L225 Difference]: With dead ends: 2449 [2020-10-12 19:49:55,392 INFO L226 Difference]: Without dead ends: 1777 [2020-10-12 19:49:55,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:49:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2020-10-12 19:49:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 757. [2020-10-12 19:49:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2020-10-12 19:49:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1157 transitions. [2020-10-12 19:49:55,491 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1157 transitions. Word has length 108 [2020-10-12 19:49:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:55,492 INFO L479 AbstractCegarLoop]: Abstraction has 757 states and 1157 transitions. [2020-10-12 19:49:55,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:49:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1157 transitions. [2020-10-12 19:49:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:49:55,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:55,494 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] [2020-10-12 19:49:55,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:49:55,494 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:55,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:55,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1913285360, now seen corresponding path program 1 times [2020-10-12 19:49:55,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:55,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649816465] [2020-10-12 19:49:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:55,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:55,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:00,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:00,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:00,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:50:00,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:50:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:50:00,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:50:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:50:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:50:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:00,970 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:50:00,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:00,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:00,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:00,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:00,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:50:00,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:00,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:50:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:01,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649816465] [2020-10-12 19:50:01,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:01,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:50:01,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641207850] [2020-10-12 19:50:01,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:50:01,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:50:01,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:50:01,085 INFO L87 Difference]: Start difference. First operand 757 states and 1157 transitions. Second operand 11 states. [2020-10-12 19:50:01,542 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-12 19:50:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:03,893 INFO L93 Difference]: Finished difference Result 8437 states and 13324 transitions. [2020-10-12 19:50:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:50:03,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-12 19:50:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:03,933 INFO L225 Difference]: With dead ends: 8437 [2020-10-12 19:50:03,934 INFO L226 Difference]: Without dead ends: 7765 [2020-10-12 19:50:03,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:50:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7765 states. [2020-10-12 19:50:04,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7765 to 1746. [2020-10-12 19:50:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2020-10-12 19:50:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2720 transitions. [2020-10-12 19:50:04,190 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2720 transitions. Word has length 108 [2020-10-12 19:50:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:04,191 INFO L479 AbstractCegarLoop]: Abstraction has 1746 states and 2720 transitions. [2020-10-12 19:50:04,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:50:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2720 transitions. [2020-10-12 19:50:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:50:04,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:04,192 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] [2020-10-12 19:50:04,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:50:04,193 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash -224931498, now seen corresponding path program 1 times [2020-10-12 19:50:04,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:04,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144120496] [2020-10-12 19:50:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:04,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:08,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:09,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:09,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:50:09,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:50:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:50:09,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:50:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:50:09,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:50:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:09,552 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:50:09,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:09,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:09,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:09,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:09,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:50:09,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:09,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:09,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144120496] [2020-10-12 19:50:09,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:09,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:50:09,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215569548] [2020-10-12 19:50:09,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:50:09,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:09,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:50:09,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:50:09,613 INFO L87 Difference]: Start difference. First operand 1746 states and 2720 transitions. Second operand 11 states. [2020-10-12 19:50:09,941 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-12 19:50:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:12,244 INFO L93 Difference]: Finished difference Result 10065 states and 15860 transitions. [2020-10-12 19:50:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:50:12,244 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-12 19:50:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:12,285 INFO L225 Difference]: With dead ends: 10065 [2020-10-12 19:50:12,286 INFO L226 Difference]: Without dead ends: 9074 [2020-10-12 19:50:12,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:50:12,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2020-10-12 19:50:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 2751. [2020-10-12 19:50:12,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2020-10-12 19:50:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 4311 transitions. [2020-10-12 19:50:12,669 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 4311 transitions. Word has length 108 [2020-10-12 19:50:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:12,669 INFO L479 AbstractCegarLoop]: Abstraction has 2751 states and 4311 transitions. [2020-10-12 19:50:12,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:50:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 4311 transitions. [2020-10-12 19:50:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:50:12,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:12,671 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] [2020-10-12 19:50:12,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:50:12,671 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2083697448, now seen corresponding path program 1 times [2020-10-12 19:50:12,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:12,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862287574] [2020-10-12 19:50:12,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:12,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:13,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:17,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:17,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:50:17,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:50:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:50:17,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:50:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:50:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:50:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:18,022 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:50:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:18,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:18,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:18,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:18,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:50:18,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:18,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:18,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:18,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:18,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862287574] [2020-10-12 19:50:18,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:18,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:50:18,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078275775] [2020-10-12 19:50:18,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:50:18,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:18,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:50:18,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:50:18,068 INFO L87 Difference]: Start difference. First operand 2751 states and 4311 transitions. Second operand 11 states. [2020-10-12 19:50:18,391 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-12 19:50:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:20,362 INFO L93 Difference]: Finished difference Result 10690 states and 16845 transitions. [2020-10-12 19:50:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:50:20,363 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-12 19:50:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:20,383 INFO L225 Difference]: With dead ends: 10690 [2020-10-12 19:50:20,383 INFO L226 Difference]: Without dead ends: 9699 [2020-10-12 19:50:20,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:50:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9699 states. [2020-10-12 19:50:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9699 to 3421. [2020-10-12 19:50:20,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3421 states. [2020-10-12 19:50:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 5373 transitions. [2020-10-12 19:50:20,884 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 5373 transitions. Word has length 108 [2020-10-12 19:50:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:20,884 INFO L479 AbstractCegarLoop]: Abstraction has 3421 states and 5373 transitions. [2020-10-12 19:50:20,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:50:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 5373 transitions. [2020-10-12 19:50:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:50:20,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:20,886 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] [2020-10-12 19:50:20,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:50:20,887 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:20,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1929070, now seen corresponding path program 1 times [2020-10-12 19:50:20,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:20,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898349352] [2020-10-12 19:50:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:21,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:25,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:25,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:50:25,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:50:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:50:25,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:50:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 19:50:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:50:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:26,200 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:50:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:26,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:26,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:26,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:50:26,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:26,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:26,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:26,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898349352] [2020-10-12 19:50:26,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:26,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:50:26,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688841243] [2020-10-12 19:50:26,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:50:26,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:50:26,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:50:26,240 INFO L87 Difference]: Start difference. First operand 3421 states and 5373 transitions. Second operand 5 states. [2020-10-12 19:50:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:27,880 INFO L93 Difference]: Finished difference Result 6786 states and 10659 transitions. [2020-10-12 19:50:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:50:27,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-12 19:50:27,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:27,897 INFO L225 Difference]: With dead ends: 6786 [2020-10-12 19:50:27,897 INFO L226 Difference]: Without dead ends: 6784 [2020-10-12 19:50:27,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:50:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6784 states. [2020-10-12 19:50:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6784 to 3493. [2020-10-12 19:50:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3493 states. [2020-10-12 19:50:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5445 transitions. [2020-10-12 19:50:28,389 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5445 transitions. Word has length 108 [2020-10-12 19:50:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:28,390 INFO L479 AbstractCegarLoop]: Abstraction has 3493 states and 5445 transitions. [2020-10-12 19:50:28,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:50:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5445 transitions. [2020-10-12 19:50:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:50:28,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:28,391 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] [2020-10-12 19:50:28,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:50:28,392 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:28,392 INFO L82 PathProgramCache]: Analyzing trace with hash 18120273, now seen corresponding path program 1 times [2020-10-12 19:50:28,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:28,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692075597] [2020-10-12 19:50:28,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:28,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:33,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:33,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:50:33,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:50:33,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:50:33,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:50:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:50:33,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:50:33,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:33,808 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:50:33,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:33,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:33,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:33,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:50:33,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:33,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:33,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692075597] [2020-10-12 19:50:33,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:33,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:50:33,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627501058] [2020-10-12 19:50:33,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:50:33,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:33,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:50:33,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:50:33,877 INFO L87 Difference]: Start difference. First operand 3493 states and 5445 transitions. Second operand 11 states. [2020-10-12 19:50:34,283 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-12 19:50:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:36,634 INFO L93 Difference]: Finished difference Result 12961 states and 20313 transitions. [2020-10-12 19:50:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:50:36,635 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-12 19:50:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:36,652 INFO L225 Difference]: With dead ends: 12961 [2020-10-12 19:50:36,652 INFO L226 Difference]: Without dead ends: 9553 [2020-10-12 19:50:36,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:50:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9553 states. [2020-10-12 19:50:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9553 to 3493. [2020-10-12 19:50:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3493 states. [2020-10-12 19:50:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5425 transitions. [2020-10-12 19:50:37,267 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5425 transitions. Word has length 108 [2020-10-12 19:50:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:37,267 INFO L479 AbstractCegarLoop]: Abstraction has 3493 states and 5425 transitions. [2020-10-12 19:50:37,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:50:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5425 transitions. [2020-10-12 19:50:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:50:37,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:37,269 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] [2020-10-12 19:50:37,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:50:37,270 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:37,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2059952226, now seen corresponding path program 1 times [2020-10-12 19:50:37,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:37,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802915793] [2020-10-12 19:50:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:37,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:37,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:42,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:42,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:50:42,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:50:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:50:42,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:50:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:50:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:50:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:42,627 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:50:42,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:42,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:42,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:42,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:42,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:50:42,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:42,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:42,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:42,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:42,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802915793] [2020-10-12 19:50:42,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:42,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:50:42,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81533791] [2020-10-12 19:50:42,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:50:42,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:42,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:50:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:50:42,666 INFO L87 Difference]: Start difference. First operand 3493 states and 5425 transitions. Second operand 11 states. [2020-10-12 19:50:42,992 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-12 19:50:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:45,690 INFO L93 Difference]: Finished difference Result 11669 states and 18220 transitions. [2020-10-12 19:50:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:50:45,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-12 19:50:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:45,703 INFO L225 Difference]: With dead ends: 11669 [2020-10-12 19:50:45,703 INFO L226 Difference]: Without dead ends: 10662 [2020-10-12 19:50:45,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:50:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2020-10-12 19:50:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 4179. [2020-10-12 19:50:46,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4179 states. [2020-10-12 19:50:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6499 transitions. [2020-10-12 19:50:46,378 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6499 transitions. Word has length 108 [2020-10-12 19:50:46,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:46,378 INFO L479 AbstractCegarLoop]: Abstraction has 4179 states and 6499 transitions. [2020-10-12 19:50:46,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:50:46,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6499 transitions. [2020-10-12 19:50:46,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:50:46,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:46,380 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] [2020-10-12 19:50:46,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:50:46,380 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:46,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:46,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1687426332, now seen corresponding path program 1 times [2020-10-12 19:50:46,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:46,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382772937] [2020-10-12 19:50:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:50,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:50,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:51,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:51,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:50:51,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:50:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:50:51,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:50:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:50:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:50:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:51,734 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:50:51,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:51,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:51,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:51,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:51,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:51,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:50:51,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:51,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:51,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:51,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382772937] [2020-10-12 19:50:51,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:51,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:50:51,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632937250] [2020-10-12 19:50:51,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:50:51,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:51,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:50:51,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:50:51,775 INFO L87 Difference]: Start difference. First operand 4179 states and 6499 transitions. Second operand 11 states. [2020-10-12 19:50:52,115 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-12 19:50:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:55,123 INFO L93 Difference]: Finished difference Result 12447 states and 19434 transitions. [2020-10-12 19:50:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:50:55,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-12 19:50:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:55,137 INFO L225 Difference]: With dead ends: 12447 [2020-10-12 19:50:55,137 INFO L226 Difference]: Without dead ends: 11440 [2020-10-12 19:50:55,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:50:55,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11440 states. [2020-10-12 19:50:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11440 to 4865. [2020-10-12 19:50:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4865 states. [2020-10-12 19:50:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4865 states to 4865 states and 7573 transitions. [2020-10-12 19:50:56,252 INFO L78 Accepts]: Start accepts. Automaton has 4865 states and 7573 transitions. Word has length 108 [2020-10-12 19:50:56,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:56,253 INFO L479 AbstractCegarLoop]: Abstraction has 4865 states and 7573 transitions. [2020-10-12 19:50:56,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:50:56,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4865 states and 7573 transitions. [2020-10-12 19:50:56,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 19:50:56,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:56,255 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] [2020-10-12 19:50:56,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:50:56,255 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:56,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:56,256 INFO L82 PathProgramCache]: Analyzing trace with hash -50181273, now seen corresponding path program 1 times [2020-10-12 19:50:56,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:56,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379974706] [2020-10-12 19:50:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:56,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:56,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:56,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:57,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:01,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:01,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 19:51:01,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:51:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:51:01,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:01,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:51:01,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 19:51:01,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:51:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:01,515 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:51:01,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:01,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:01,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:01,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:01,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:51:01,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:51:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:01,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:51:01,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:01,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379974706] [2020-10-12 19:51:01,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:01,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:51:01,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967014476] [2020-10-12 19:51:01,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:51:01,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:01,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:51:01,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:51:01,548 INFO L87 Difference]: Start difference. First operand 4865 states and 7573 transitions. Second operand 4 states. [2020-10-12 19:51:01,796 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 19:51:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:51:03,935 INFO L93 Difference]: Finished difference Result 13977 states and 21811 transitions. [2020-10-12 19:51:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:51:03,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-10-12 19:51:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:51:03,945 INFO L225 Difference]: With dead ends: 13977 [2020-10-12 19:51:03,945 INFO L226 Difference]: Without dead ends: 9196 [2020-10-12 19:51:03,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:51:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2020-10-12 19:51:05,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 9187. [2020-10-12 19:51:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9187 states. [2020-10-12 19:51:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9187 states to 9187 states and 14260 transitions. [2020-10-12 19:51:05,210 INFO L78 Accepts]: Start accepts. Automaton has 9187 states and 14260 transitions. Word has length 109 [2020-10-12 19:51:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:51:05,211 INFO L479 AbstractCegarLoop]: Abstraction has 9187 states and 14260 transitions. [2020-10-12 19:51:05,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:51:05,211 INFO L276 IsEmpty]: Start isEmpty. Operand 9187 states and 14260 transitions. [2020-10-12 19:51:05,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:51:05,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:51:05,212 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] [2020-10-12 19:51:05,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:51:05,212 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:51:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:51:05,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1857385847, now seen corresponding path program 1 times [2020-10-12 19:51:05,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:51:05,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053485327] [2020-10-12 19:51:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:51:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:05,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:05,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:07,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:07,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:07,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:10,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:10,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:51:10,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:51:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:51:10,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:51:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:51:10,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 19:51:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:10,491 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:51:10,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:10,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:10,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:10,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:10,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:51:10,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:10,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:51:10,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:10,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:51:10,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:10,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053485327] [2020-10-12 19:51:10,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:10,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:51:10,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102732273] [2020-10-12 19:51:10,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:51:10,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:10,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:51:10,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:51:10,554 INFO L87 Difference]: Start difference. First operand 9187 states and 14260 transitions. Second operand 6 states. [2020-10-12 19:51:10,818 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:51:12,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:51:12,805 INFO L93 Difference]: Finished difference Result 18297 states and 28441 transitions. [2020-10-12 19:51:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:51:12,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-10-12 19:51:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:51:12,815 INFO L225 Difference]: With dead ends: 18297 [2020-10-12 19:51:12,816 INFO L226 Difference]: Without dead ends: 9187 [2020-10-12 19:51:12,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:51:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9187 states. [2020-10-12 19:51:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9187 to 9187. [2020-10-12 19:51:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9187 states. [2020-10-12 19:51:14,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9187 states to 9187 states and 14204 transitions. [2020-10-12 19:51:14,215 INFO L78 Accepts]: Start accepts. Automaton has 9187 states and 14204 transitions. Word has length 110 [2020-10-12 19:51:14,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:51:14,215 INFO L479 AbstractCegarLoop]: Abstraction has 9187 states and 14204 transitions. [2020-10-12 19:51:14,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:51:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 9187 states and 14204 transitions. [2020-10-12 19:51:14,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:51:14,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:51:14,217 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] [2020-10-12 19:51:14,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:51:14,217 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:51:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:51:14,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1489114620, now seen corresponding path program 1 times [2020-10-12 19:51:14,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:51:14,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528490476] [2020-10-12 19:51:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:51:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:14,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:17,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:17,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:51:17,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:51:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3027 [2020-10-12 19:51:17,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:51:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 19:51:17,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 19:51:17,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:17,521 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:51:17,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:17,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:17,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:17,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:17,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:17,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:51:17,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:17,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:51:17,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:17,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:51:17,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:17,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528490476] [2020-10-12 19:51:17,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:17,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:51:17,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987291485] [2020-10-12 19:51:17,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:51:17,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:17,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:51:17,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:51:17,555 INFO L87 Difference]: Start difference. First operand 9187 states and 14204 transitions. Second operand 4 states. [2020-10-12 19:51:17,834 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 19:51:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:51:21,039 INFO L93 Difference]: Finished difference Result 26511 states and 40998 transitions. [2020-10-12 19:51:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:51:21,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-12 19:51:21,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:51:21,066 INFO L225 Difference]: With dead ends: 26511 [2020-10-12 19:51:21,066 INFO L226 Difference]: Without dead ends: 17401 [2020-10-12 19:51:21,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:51:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17401 states. [2020-10-12 19:51:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17401 to 17399. [2020-10-12 19:51:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17399 states. [2020-10-12 19:51:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17399 states to 17399 states and 26760 transitions. [2020-10-12 19:51:23,606 INFO L78 Accepts]: Start accepts. Automaton has 17399 states and 26760 transitions. Word has length 110 [2020-10-12 19:51:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:51:23,606 INFO L479 AbstractCegarLoop]: Abstraction has 17399 states and 26760 transitions. [2020-10-12 19:51:23,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:51:23,607 INFO L276 IsEmpty]: Start isEmpty. Operand 17399 states and 26760 transitions. [2020-10-12 19:51:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 19:51:23,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:51:23,608 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] [2020-10-12 19:51:23,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:51:23,608 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:51:23,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:51:23,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1184001895, now seen corresponding path program 1 times [2020-10-12 19:51:23,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:51:23,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204466974] [2020-10-12 19:51:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:51:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:23,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:28,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 19:51:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:51:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:51:28,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:51:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:51:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:51:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:28,898 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:51:28,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:28,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:28,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:28,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:28,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:51:28,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:51:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:51:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:28,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204466974] [2020-10-12 19:51:28,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:28,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:51:28,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238748841] [2020-10-12 19:51:28,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:51:28,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:28,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:51:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:51:28,943 INFO L87 Difference]: Start difference. First operand 17399 states and 26760 transitions. Second operand 6 states. [2020-10-12 19:51:29,223 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:51:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:51:32,413 INFO L93 Difference]: Finished difference Result 34721 states and 53441 transitions. [2020-10-12 19:51:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:51:32,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-12 19:51:32,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:51:32,434 INFO L225 Difference]: With dead ends: 34721 [2020-10-12 19:51:32,434 INFO L226 Difference]: Without dead ends: 17399 [2020-10-12 19:51:32,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:51:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17399 states. [2020-10-12 19:51:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17399 to 17399. [2020-10-12 19:51:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17399 states. [2020-10-12 19:51:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17399 states to 17399 states and 26648 transitions. [2020-10-12 19:51:35,115 INFO L78 Accepts]: Start accepts. Automaton has 17399 states and 26648 transitions. Word has length 111 [2020-10-12 19:51:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:51:35,116 INFO L479 AbstractCegarLoop]: Abstraction has 17399 states and 26648 transitions. [2020-10-12 19:51:35,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:51:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 17399 states and 26648 transitions. [2020-10-12 19:51:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 19:51:35,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:51:35,117 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] [2020-10-12 19:51:35,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:51:35,117 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:51:35,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:51:35,118 INFO L82 PathProgramCache]: Analyzing trace with hash 654711394, now seen corresponding path program 1 times [2020-10-12 19:51:35,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:51:35,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077098481] [2020-10-12 19:51:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:51:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:35,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:35,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:35,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:37,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:37,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 19:51:37,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:51:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2724 [2020-10-12 19:51:37,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:51:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 19:51:37,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:51:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:38,114 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:51:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:38,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:38,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:38,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:38,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:38,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:51:38,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:51:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:38,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:51:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:38,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077098481] [2020-10-12 19:51:38,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:38,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:51:38,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888235536] [2020-10-12 19:51:38,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:51:38,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:51:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:51:38,149 INFO L87 Difference]: Start difference. First operand 17399 states and 26648 transitions. Second operand 4 states. [2020-10-12 19:51:38,414 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-12 19:51:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:51:44,045 INFO L93 Difference]: Finished difference Result 50251 states and 76874 transitions. [2020-10-12 19:51:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:51:44,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-12 19:51:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:51:44,081 INFO L225 Difference]: With dead ends: 50251 [2020-10-12 19:51:44,082 INFO L226 Difference]: Without dead ends: 32928 [2020-10-12 19:51:44,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:51:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32928 states. [2020-10-12 19:51:49,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32928 to 32918. [2020-10-12 19:51:49,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32918 states. [2020-10-12 19:51:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32918 states to 32918 states and 50069 transitions. [2020-10-12 19:51:49,074 INFO L78 Accepts]: Start accepts. Automaton has 32918 states and 50069 transitions. Word has length 111 [2020-10-12 19:51:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:51:49,074 INFO L479 AbstractCegarLoop]: Abstraction has 32918 states and 50069 transitions. [2020-10-12 19:51:49,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:51:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 32918 states and 50069 transitions. [2020-10-12 19:51:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:51:49,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:51:49,075 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] [2020-10-12 19:51:49,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:51:49,076 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:51:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:51:49,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1118855676, now seen corresponding path program 1 times [2020-10-12 19:51:49,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:51:49,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675837676] [2020-10-12 19:51:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:51:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:49,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:49,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:50,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:50,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:51:50,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:51:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-12 19:51:50,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:51:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:51:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 19:51:50,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:50,324 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:51:50,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:50,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:50,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:50,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:50,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:51:50,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:51:50,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:51:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:50,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675837676] [2020-10-12 19:51:50,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:50,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:51:50,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622276045] [2020-10-12 19:51:50,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:51:50,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:50,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:51:50,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:51:50,357 INFO L87 Difference]: Start difference. First operand 32918 states and 50069 transitions. Second operand 4 states. [2020-10-12 19:51:50,608 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-12 19:51:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:51:57,402 INFO L93 Difference]: Finished difference Result 73652 states and 112033 transitions. [2020-10-12 19:51:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:51:57,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-12 19:51:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:51:57,446 INFO L225 Difference]: With dead ends: 73652 [2020-10-12 19:51:57,446 INFO L226 Difference]: Without dead ends: 40802 [2020-10-12 19:51:57,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:51:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40802 states. [2020-10-12 19:52:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40802 to 40800. [2020-10-12 19:52:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40800 states. [2020-10-12 19:52:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40800 states to 40800 states and 61871 transitions. [2020-10-12 19:52:03,813 INFO L78 Accepts]: Start accepts. Automaton has 40800 states and 61871 transitions. Word has length 112 [2020-10-12 19:52:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:52:03,813 INFO L479 AbstractCegarLoop]: Abstraction has 40800 states and 61871 transitions. [2020-10-12 19:52:03,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:52:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 40800 states and 61871 transitions. [2020-10-12 19:52:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:52:03,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:52:03,815 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] [2020-10-12 19:52:03,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:52:03,815 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:52:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:52:03,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2030793322, now seen corresponding path program 1 times [2020-10-12 19:52:03,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:52:03,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753456196] [2020-10-12 19:52:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:52:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:09,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:09,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:52:09,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:52:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5900 [2020-10-12 19:52:09,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:52:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 19:52:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 19:52:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:10,023 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:52:10,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:52:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:10,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:10,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:52:10,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:52:10,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:52:10,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:10,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:52:10,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:52:10,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:52:10,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:52:10,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753456196] [2020-10-12 19:52:10,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:52:10,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:52:10,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386472254] [2020-10-12 19:52:10,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:52:10,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:52:10,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:52:10,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:52:10,054 INFO L87 Difference]: Start difference. First operand 40800 states and 61871 transitions. Second operand 8 states. [2020-10-12 19:52:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:52:23,191 INFO L93 Difference]: Finished difference Result 85827 states and 129174 transitions. [2020-10-12 19:52:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:52:23,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-10-12 19:52:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:52:23,273 INFO L225 Difference]: With dead ends: 85827 [2020-10-12 19:52:23,273 INFO L226 Difference]: Without dead ends: 77265 [2020-10-12 19:52:23,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:52:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77265 states. [2020-10-12 19:52:31,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77265 to 40827. [2020-10-12 19:52:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40827 states. [2020-10-12 19:52:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40827 states to 40827 states and 61909 transitions. [2020-10-12 19:52:31,208 INFO L78 Accepts]: Start accepts. Automaton has 40827 states and 61909 transitions. Word has length 113 [2020-10-12 19:52:31,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:52:31,208 INFO L479 AbstractCegarLoop]: Abstraction has 40827 states and 61909 transitions. [2020-10-12 19:52:31,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:52:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 40827 states and 61909 transitions. [2020-10-12 19:52:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:52:31,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:52:31,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:52:31,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 19:52:31,210 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:52:31,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:52:31,210 INFO L82 PathProgramCache]: Analyzing trace with hash 976957571, now seen corresponding path program 1 times [2020-10-12 19:52:31,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:52:31,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8350928] [2020-10-12 19:52:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:52:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:31,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:31,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:33,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:33,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:52:33,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:52:33,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-10-12 19:52:33,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:52:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:52:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 19:52:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:33,722 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:52:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:52:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:33,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:33,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:52:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:52:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:52:33,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:52:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:52:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:52:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:52:33,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8350928] [2020-10-12 19:52:33,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:52:33,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:52:33,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653307912] [2020-10-12 19:52:33,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:52:33,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:52:33,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:52:33,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:52:33,777 INFO L87 Difference]: Start difference. First operand 40827 states and 61909 transitions. Second operand 7 states. [2020-10-12 19:52:34,032 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-12 19:52:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:52:50,833 INFO L93 Difference]: Finished difference Result 138531 states and 209877 transitions. [2020-10-12 19:52:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:52:50,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-12 19:52:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:52:50,948 INFO L225 Difference]: With dead ends: 138531 [2020-10-12 19:52:50,948 INFO L226 Difference]: Without dead ends: 97793 [2020-10-12 19:52:50,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:52:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97793 states. [2020-10-12 19:52:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97793 to 40819. [2020-10-12 19:52:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40819 states. [2020-10-12 19:52:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40819 states to 40819 states and 61895 transitions. [2020-10-12 19:52:59,753 INFO L78 Accepts]: Start accepts. Automaton has 40819 states and 61895 transitions. Word has length 113 [2020-10-12 19:52:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:52:59,754 INFO L479 AbstractCegarLoop]: Abstraction has 40819 states and 61895 transitions. [2020-10-12 19:52:59,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:52:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 40819 states and 61895 transitions. [2020-10-12 19:52:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:52:59,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:52:59,755 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] [2020-10-12 19:52:59,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 19:52:59,755 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:52:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:52:59,756 INFO L82 PathProgramCache]: Analyzing trace with hash 364856957, now seen corresponding path program 1 times [2020-10-12 19:52:59,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:52:59,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471115335] [2020-10-12 19:52:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:52:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:00,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:02,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:53:02,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:53:02,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:53:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2566 [2020-10-12 19:53:02,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:53:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:53:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:53:02,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 19:53:02,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:53:02,673 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:53:02,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:53:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:53:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:53:02,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:53:02,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:53:02,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:53:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:53:02,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:53:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:53:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:53:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:53:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:53:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:53:02,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471115335] [2020-10-12 19:53:02,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:53:02,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:53:02,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393252342] [2020-10-12 19:53:02,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:53:02,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:53:02,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:53:02,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:53:02,727 INFO L87 Difference]: Start difference. First operand 40819 states and 61895 transitions. Second operand 7 states. [2020-10-12 19:53:02,979 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 200