/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=NARROWEST --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/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:38:34,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:38:34,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:38:34,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:38:34,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:38:34,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:38:34,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:38:34,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:38:34,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:38:34,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:38:34,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:38:34,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:38:34,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:38:34,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:38:34,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:38:34,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:38:34,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:38:34,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:38:34,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:38:34,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:38:34,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:38:34,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:38:34,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:38:34,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:38:34,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:38:34,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:38:34,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:38:34,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:38:34,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:38:34,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:38:34,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:38:34,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:38:34,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:38:34,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:38:34,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:38:34,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:38:34,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:38:34,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:38:34,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:38:34,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:38:34,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:38:34,381 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 [2020-10-13 13:38:34,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:38:34,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:38:34,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:38:34,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:38:34,428 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:38:34,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:38:34,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:38:34,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:38:34,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:38:34,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:38:34,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:38:34,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:38:34,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:38:34,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:38:34,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:38:34,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:38:34,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:38:34,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:38:34,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:38:34,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:38:34,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:38:34,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:38:34,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:38:34,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:38:34,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:38:34,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:38:34,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:38:34,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:38:34,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:38:34,435 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:38:34,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:38:34,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:38:34,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:38:34,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:38:34,806 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:38:34,806 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:38:34,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1622f375/aaa9dd3bfdb74991b3a8815738d75c4b/FLAG2b4546ba6 [2020-10-13 13:38:35,476 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:38:35,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:38:35,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1622f375/aaa9dd3bfdb74991b3a8815738d75c4b/FLAG2b4546ba6 [2020-10-13 13:38:35,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1622f375/aaa9dd3bfdb74991b3a8815738d75c4b [2020-10-13 13:38:35,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:38:35,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:38:35,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:38:35,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:38:35,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:38:35,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:38:35" (1/1) ... [2020-10-13 13:38:35,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d733b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:35, skipping insertion in model container [2020-10-13 13:38:35,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:38:35" (1/1) ... [2020-10-13 13:38:35,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:38:35,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:38:36,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:38:36,227 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:38:36,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:38:36,316 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:38:36,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36 WrapperNode [2020-10-13 13:38:36,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:38:36,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:38:36,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:38:36,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:38:36,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (1/1) ... [2020-10-13 13:38:36,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (1/1) ... [2020-10-13 13:38:36,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (1/1) ... [2020-10-13 13:38:36,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (1/1) ... [2020-10-13 13:38:36,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (1/1) ... [2020-10-13 13:38:36,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (1/1) ... [2020-10-13 13:38:36,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (1/1) ... [2020-10-13 13:38:36,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:38:36,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:38:36,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:38:36,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:38:36,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (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 [2020-10-13 13:38:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:38:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:38:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:38:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:38:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:38:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:38:36,457 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:38:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:38:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:38:36,458 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:38:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:38:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:38:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:38:36,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:38:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:38:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:38:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:38:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:38:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:38:36,459 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:38:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:38:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:38:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:38:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:38:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:38:36,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:38:36,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:38:37,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:38:37,293 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:38:37,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:38:37 BoogieIcfgContainer [2020-10-13 13:38:37,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:38:37,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:38:37,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:38:37,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:38:37,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:38:35" (1/3) ... [2020-10-13 13:38:37,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6680796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:38:37, skipping insertion in model container [2020-10-13 13:38:37,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:38:36" (2/3) ... [2020-10-13 13:38:37,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6680796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:38:37, skipping insertion in model container [2020-10-13 13:38:37,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:38:37" (3/3) ... [2020-10-13 13:38:37,308 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c [2020-10-13 13:38:37,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:38:37,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:38:37,344 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:38:37,374 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:38:37,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:38:37,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:38:37,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:38:37,375 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:38:37,375 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:38:37,375 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:38:37,376 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:38:37,403 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-10-13 13:38:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:38:37,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:37,417 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] [2020-10-13 13:38:37,417 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1583782225, now seen corresponding path program 1 times [2020-10-13 13:38:37,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:37,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164266004] [2020-10-13 13:38:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:38,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:38:38,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-13 13:38:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:38:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:38,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:38:38,501 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:38,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:38,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:38,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:38,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:38:38,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:38,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:38:38,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:38:38,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:38,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:38,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:38,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:38,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:38:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:38,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:38,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:38,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:38:38,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:38,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:38,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:38:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:38,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:38,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:38,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:38:38,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:38,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:38,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:38,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:38:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:38:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:38,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:38,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:38:38,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:38,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:38,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:38:38,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:38:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:38,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:38:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:38,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-13 13:38:38,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:38,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:38,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:38,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:38,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:38,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:38,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:38,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:38,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 29 [2020-10-13 13:38:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:38:38,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164266004] [2020-10-13 13:38:38,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:38,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:38:38,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8135348] [2020-10-13 13:38:38,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:38:38,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:38,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:38:38,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:38:38,975 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 6 states. [2020-10-13 13:38:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:40,264 INFO L93 Difference]: Finished difference Result 302 states and 480 transitions. [2020-10-13 13:38:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:38:40,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 13:38:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:40,287 INFO L225 Difference]: With dead ends: 302 [2020-10-13 13:38:40,287 INFO L226 Difference]: Without dead ends: 192 [2020-10-13 13:38:40,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-13 13:38:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2020-10-13 13:38:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 13:38:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 279 transitions. [2020-10-13 13:38:40,356 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 279 transitions. Word has length 65 [2020-10-13 13:38:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:40,357 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 279 transitions. [2020-10-13 13:38:40,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:38:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 279 transitions. [2020-10-13 13:38:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:38:40,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:40,361 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] [2020-10-13 13:38:40,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:38:40,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:40,362 INFO L82 PathProgramCache]: Analyzing trace with hash 554422927, now seen corresponding path program 1 times [2020-10-13 13:38:40,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:40,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277720606] [2020-10-13 13:38:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:40,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:38:41,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-13 13:38:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:38:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:38:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:41,223 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:41,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:41,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:41,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:41,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:38:41,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:41,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:41,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:38:41,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:41,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:38:41,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:38:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:38:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:41,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:41,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:38:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:38:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:38:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:41,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:41,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:41,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:38:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:41,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:41,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:41,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:38:41,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:38:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:41,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:41,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:41,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:38:41,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:41,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:41,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:41,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:41,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:41,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:41,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:38:41,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277720606] [2020-10-13 13:38:41,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:41,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:38:41,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061029065] [2020-10-13 13:38:41,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:38:41,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:41,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:38:41,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:38:41,748 INFO L87 Difference]: Start difference. First operand 174 states and 279 transitions. Second operand 12 states. [2020-10-13 13:38:42,241 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:42,470 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:38:42,754 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:42,933 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:38:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:44,560 INFO L93 Difference]: Finished difference Result 300 states and 472 transitions. [2020-10-13 13:38:44,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:38:44,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-13 13:38:44,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:44,564 INFO L225 Difference]: With dead ends: 300 [2020-10-13 13:38:44,564 INFO L226 Difference]: Without dead ends: 192 [2020-10-13 13:38:44,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:38:44,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-13 13:38:44,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2020-10-13 13:38:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 13:38:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions. [2020-10-13 13:38:44,592 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 65 [2020-10-13 13:38:44,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:44,592 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 249 transitions. [2020-10-13 13:38:44,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:38:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions. [2020-10-13 13:38:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:38:44,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:44,600 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] [2020-10-13 13:38:44,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:38:44,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:44,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash 551989973, now seen corresponding path program 1 times [2020-10-13 13:38:44,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:44,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590606413] [2020-10-13 13:38:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:44,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:45,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:38:49,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:38:49,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:38:49,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:49,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:38:49,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:38:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:49,930 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:49,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:38:49,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:49,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:38:50,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:38:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:50,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:50,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:50,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:50,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:50,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:50,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:50,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:38:50,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:38:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:50,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:38:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:50,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:50,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:50,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:50,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:50,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:50,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:50,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:50,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:38:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:50,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:50,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:50,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:50,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:50,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:50,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:50,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:50,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:38:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:50,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:50,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:50,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:50,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:50,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:50,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:38:50,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590606413] [2020-10-13 13:38:50,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:50,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:50,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528880203] [2020-10-13 13:38:50,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:50,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:50,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:50,247 INFO L87 Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 9 states. [2020-10-13 13:38:50,503 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:52,329 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:38:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:52,918 INFO L93 Difference]: Finished difference Result 424 states and 636 transitions. [2020-10-13 13:38:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:38:52,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:38:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:52,924 INFO L225 Difference]: With dead ends: 424 [2020-10-13 13:38:52,924 INFO L226 Difference]: Without dead ends: 322 [2020-10-13 13:38:52,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:38:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-13 13:38:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 277. [2020-10-13 13:38:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-13 13:38:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 403 transitions. [2020-10-13 13:38:52,964 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 403 transitions. Word has length 94 [2020-10-13 13:38:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:52,964 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 403 transitions. [2020-10-13 13:38:52,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:38:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 403 transitions. [2020-10-13 13:38:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:38:52,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:52,968 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] [2020-10-13 13:38:52,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:38:52,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:52,969 INFO L82 PathProgramCache]: Analyzing trace with hash 829961930, now seen corresponding path program 1 times [2020-10-13 13:38:52,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:52,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033511260] [2020-10-13 13:38:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:53,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:53,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:58,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:58,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:38:58,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:38:58,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:38:58,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:58,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:38:58,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:38:58,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:38:58,242 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:58,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:58,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:58,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:58,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:38:58,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:58,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:58,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:58,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:58,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:58,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:38:58,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:38:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:58,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:58,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:58,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:38:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:58,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:58,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:58,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:58,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:58,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:58,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:58,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:38:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:58,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:58,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:58,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:38:58,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:38:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:38:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:58,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:58,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:58,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:58,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:58,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:38:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:58,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:58,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:58,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:58,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:58,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:38:58,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033511260] [2020-10-13 13:38:58,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:58,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:58,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170294254] [2020-10-13 13:38:58,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:58,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:58,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:58,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:58,574 INFO L87 Difference]: Start difference. First operand 277 states and 403 transitions. Second operand 9 states. [2020-10-13 13:38:58,755 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:00,989 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:39:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:01,363 INFO L93 Difference]: Finished difference Result 767 states and 1149 transitions. [2020-10-13 13:39:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:39:01,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 13:39:01,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:01,372 INFO L225 Difference]: With dead ends: 767 [2020-10-13 13:39:01,372 INFO L226 Difference]: Without dead ends: 562 [2020-10-13 13:39:01,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:39:01,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-13 13:39:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 484. [2020-10-13 13:39:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-13 13:39:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 717 transitions. [2020-10-13 13:39:01,456 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 717 transitions. Word has length 96 [2020-10-13 13:39:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:01,457 INFO L479 AbstractCegarLoop]: Abstraction has 484 states and 717 transitions. [2020-10-13 13:39:01,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 717 transitions. [2020-10-13 13:39:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:39:01,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:01,461 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] [2020-10-13 13:39:01,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:39:01,461 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2005021003, now seen corresponding path program 1 times [2020-10-13 13:39:01,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:01,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923876879] [2020-10-13 13:39:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:01,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:01,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:06,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:39:06,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:39:06,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:39:06,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:39:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:39:06,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:39:06,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:06,690 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:06,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:06,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:06,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:39:06,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:06,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:06,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:39:06,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:39:06,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:39:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:06,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:39:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:06,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:06,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:06,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:06,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:06,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:39:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:06,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:06,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:06,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:39:06,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:39:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:39:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:07,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:07,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:39:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:39:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:07,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:39:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:07,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:07,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:07,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:39:07,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:07,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:07,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:39:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:39:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:07,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:39:07,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:07,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:39:07,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:39:07,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:39:07,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:39:07,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923876879] [2020-10-13 13:39:07,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:07,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:39:07,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318700032] [2020-10-13 13:39:07,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:39:07,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:07,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:39:07,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:39:07,168 INFO L87 Difference]: Start difference. First operand 484 states and 717 transitions. Second operand 13 states. [2020-10-13 13:39:07,374 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:07,804 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:39:07,990 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:39:08,729 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 13:39:09,118 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-13 13:39:09,843 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 162 [2020-10-13 13:39:10,237 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 13:39:11,446 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-13 13:39:12,370 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 13:39:12,648 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 13:39:13,451 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-13 13:39:13,730 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 13:39:14,485 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 13:39:15,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:15,097 INFO L93 Difference]: Finished difference Result 2948 states and 4544 transitions. [2020-10-13 13:39:15,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-13 13:39:15,099 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-10-13 13:39:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:15,123 INFO L225 Difference]: With dead ends: 2948 [2020-10-13 13:39:15,123 INFO L226 Difference]: Without dead ends: 2536 [2020-10-13 13:39:15,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=520, Invalid=1736, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 13:39:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2020-10-13 13:39:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 1719. [2020-10-13 13:39:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1719 states. [2020-10-13 13:39:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2635 transitions. [2020-10-13 13:39:15,305 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2635 transitions. Word has length 98 [2020-10-13 13:39:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:15,306 INFO L479 AbstractCegarLoop]: Abstraction has 1719 states and 2635 transitions. [2020-10-13 13:39:15,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:39:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2635 transitions. [2020-10-13 13:39:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:39:15,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:15,309 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] [2020-10-13 13:39:15,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:39:15,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:15,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:15,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1494122404, now seen corresponding path program 1 times [2020-10-13 13:39:15,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:15,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540362709] [2020-10-13 13:39:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:15,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:15,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:20,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:20,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:39:20,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:39:20,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:39:20,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:20,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:39:20,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:39:20,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:20,536 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:20,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:20,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:20,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:20,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:39:20,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:20,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:20,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:20,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:20,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:20,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:20,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:20,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:39:20,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 13:39:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:39:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:20,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:39:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:20,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:20,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:20,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:20,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:20,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:39:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:20,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:20,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:20,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:39:20,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:39:20,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:20,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:39:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:20,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:20,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:20,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:20,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:20,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:39:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:20,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:20,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:20,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:20,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:39:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:39:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:20,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:39:20,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:39:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:20,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:39:21,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540362709] [2020-10-13 13:39:21,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:21,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:21,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932271311] [2020-10-13 13:39:21,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:21,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:21,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:21,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:21,012 INFO L87 Difference]: Start difference. First operand 1719 states and 2635 transitions. Second operand 9 states. [2020-10-13 13:39:21,297 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:21,579 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:39:21,782 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 13:39:22,490 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2020-10-13 13:39:23,056 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:39:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:25,925 INFO L93 Difference]: Finished difference Result 5977 states and 9266 transitions. [2020-10-13 13:39:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:39:25,928 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2020-10-13 13:39:25,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:25,953 INFO L225 Difference]: With dead ends: 5977 [2020-10-13 13:39:25,954 INFO L226 Difference]: Without dead ends: 4289 [2020-10-13 13:39:25,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:39:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2020-10-13 13:39:26,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 3787. [2020-10-13 13:39:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3787 states. [2020-10-13 13:39:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3787 states to 3787 states and 5725 transitions. [2020-10-13 13:39:26,275 INFO L78 Accepts]: Start accepts. Automaton has 3787 states and 5725 transitions. Word has length 99 [2020-10-13 13:39:26,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:26,276 INFO L479 AbstractCegarLoop]: Abstraction has 3787 states and 5725 transitions. [2020-10-13 13:39:26,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3787 states and 5725 transitions. [2020-10-13 13:39:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:39:26,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:26,281 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] [2020-10-13 13:39:26,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:39:26,281 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:26,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:26,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1661857224, now seen corresponding path program 1 times [2020-10-13 13:39:26,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:26,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092731380] [2020-10-13 13:39:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:26,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:26,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:26,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:31,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:31,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:39:31,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:39:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:39:31,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:39:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:39:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:31,542 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:31,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:31,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:31,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:31,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:39:31,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:31,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:31,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:31,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:31,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:31,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:31,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:31,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:39:31,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:31,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:39:31,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:31,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:31,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:39:31,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:31,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:39:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:31,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:31,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:31,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:31,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:39:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:31,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:31,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:39:31,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:31,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:39:31,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:31,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:39:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:39:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:31,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:31,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:31,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:31,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:31,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:31,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:31,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:39:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:31,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:31,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:31,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:31,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:31,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:31,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:39:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:31,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:39:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:31,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:31,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:31,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:31,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:39:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:31,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:39:31,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092731380] [2020-10-13 13:39:31,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:31,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:31,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314365930] [2020-10-13 13:39:31,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:31,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:31,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:31,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:31,897 INFO L87 Difference]: Start difference. First operand 3787 states and 5725 transitions. Second operand 9 states. [2020-10-13 13:39:32,421 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:34,405 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:34,784 INFO L93 Difference]: Finished difference Result 9535 states and 14577 transitions. [2020-10-13 13:39:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:39:34,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-13 13:39:34,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:34,822 INFO L225 Difference]: With dead ends: 9535 [2020-10-13 13:39:34,822 INFO L226 Difference]: Without dead ends: 6309 [2020-10-13 13:39:34,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:39:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2020-10-13 13:39:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5398. [2020-10-13 13:39:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5398 states. [2020-10-13 13:39:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 8164 transitions. [2020-10-13 13:39:35,321 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 8164 transitions. Word has length 100 [2020-10-13 13:39:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:35,322 INFO L479 AbstractCegarLoop]: Abstraction has 5398 states and 8164 transitions. [2020-10-13 13:39:35,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 8164 transitions. [2020-10-13 13:39:35,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:39:35,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:35,327 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] [2020-10-13 13:39:35,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:39:35,327 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:35,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:35,328 INFO L82 PathProgramCache]: Analyzing trace with hash 41801968, now seen corresponding path program 1 times [2020-10-13 13:39:35,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:35,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128464097] [2020-10-13 13:39:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:35,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:40,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:39:40,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:39:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:39:40,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:39:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:39:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:40,571 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:40,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:40,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:40,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:39:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:40,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:40,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:39:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:39:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 13:39:40,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:39:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:39:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:39:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:40,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:40,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:40,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:40,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:39:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:40,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:39:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:40,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:40,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:40,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:40,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:40,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:39:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:40,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:40,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:40,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:39:40,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:40,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:40,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:40,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:39:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:40,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:40,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:40,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:40,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:40,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:39:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:40,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:40,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 13:39:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:40,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:40,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:39:40,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:39:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:40,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:39:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:39:40,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128464097] [2020-10-13 13:39:40,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:40,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:39:40,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876102618] [2020-10-13 13:39:40,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:39:40,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:40,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:39:40,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:39:40,935 INFO L87 Difference]: Start difference. First operand 5398 states and 8164 transitions. Second operand 7 states. [2020-10-13 13:39:41,142 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:39:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:42,611 INFO L93 Difference]: Finished difference Result 11517 states and 17378 transitions. [2020-10-13 13:39:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:39:42,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-13 13:39:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:42,645 INFO L225 Difference]: With dead ends: 11517 [2020-10-13 13:39:42,646 INFO L226 Difference]: Without dead ends: 6153 [2020-10-13 13:39:42,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:39:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6153 states. [2020-10-13 13:39:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6153 to 5400. [2020-10-13 13:39:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5400 states. [2020-10-13 13:39:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 8166 transitions. [2020-10-13 13:39:43,022 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 8166 transitions. Word has length 100 [2020-10-13 13:39:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:43,022 INFO L479 AbstractCegarLoop]: Abstraction has 5400 states and 8166 transitions. [2020-10-13 13:39:43,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:39:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 8166 transitions. [2020-10-13 13:39:43,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:39:43,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:43,029 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] [2020-10-13 13:39:43,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:39:43,029 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:43,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:43,032 INFO L82 PathProgramCache]: Analyzing trace with hash 35316880, now seen corresponding path program 1 times [2020-10-13 13:39:43,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:43,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207688318] [2020-10-13 13:39:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:43,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:43,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:48,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:39:48,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:39:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:39:48,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:39:48,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:39:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:48,254 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:48,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:39:48,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:39:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:48,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:48,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:39:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 13:39:48,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:39:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:39:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:48,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:48,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:48,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:48,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:39:48,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:48,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:39:48,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:48,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:48,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:48,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:48,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:48,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:48,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:48,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:48,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:48,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:39:48,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:39:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:39:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:48,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:48,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:48,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:39:48,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:48,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:39:48,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207688318] [2020-10-13 13:39:48,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:48,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:39:48,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143404168] [2020-10-13 13:39:48,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:39:48,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:48,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:39:48,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:39:48,651 INFO L87 Difference]: Start difference. First operand 5400 states and 8166 transitions. Second operand 8 states. [2020-10-13 13:39:48,877 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:39:49,072 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-13 13:39:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:50,552 INFO L93 Difference]: Finished difference Result 11399 states and 17247 transitions. [2020-10-13 13:39:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:39:50,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-13 13:39:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:50,668 INFO L225 Difference]: With dead ends: 11399 [2020-10-13 13:39:50,669 INFO L226 Difference]: Without dead ends: 6019 [2020-10-13 13:39:50,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:39:50,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6019 states. [2020-10-13 13:39:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6019 to 5399. [2020-10-13 13:39:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5399 states. [2020-10-13 13:39:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5399 states to 5399 states and 8162 transitions. [2020-10-13 13:39:51,055 INFO L78 Accepts]: Start accepts. Automaton has 5399 states and 8162 transitions. Word has length 101 [2020-10-13 13:39:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:51,056 INFO L479 AbstractCegarLoop]: Abstraction has 5399 states and 8162 transitions. [2020-10-13 13:39:51,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:39:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5399 states and 8162 transitions. [2020-10-13 13:39:51,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 13:39:51,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:51,063 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] [2020-10-13 13:39:51,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:39:51,063 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:51,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:51,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1331469399, now seen corresponding path program 1 times [2020-10-13 13:39:51,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:51,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531245742] [2020-10-13 13:39:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:51,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:55,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:39:56,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:39:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:39:56,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:39:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:39:56,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:39:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:56,276 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:56,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:56,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:56,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:56,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:56,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:56,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:56,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:56,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:39:56,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:39:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:56,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:56,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:56,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:39:56,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:56,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:56,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:56,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:56,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:39:56,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:56,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:39:56,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:56,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:56,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:39:56,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:39:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:56,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:56,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:56,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:39:56,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:56,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:56,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:39:56,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:39:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:56,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:39:56,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:56,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:39:56,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:39:56,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531245742] [2020-10-13 13:39:56,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:56,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:39:56,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153629102] [2020-10-13 13:39:56,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:39:56,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:56,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:39:56,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:39:56,644 INFO L87 Difference]: Start difference. First operand 5399 states and 8162 transitions. Second operand 14 states. [2020-10-13 13:39:56,869 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:39:57,415 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:39:57,599 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:57,789 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:58,040 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-13 13:39:58,592 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:40:00,675 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 13:40:01,005 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:40:01,223 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:40:01,474 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:40:01,738 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:40:05,548 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:40:06,141 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:40:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:40:08,915 INFO L93 Difference]: Finished difference Result 25659 states and 39502 transitions. [2020-10-13 13:40:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-13 13:40:08,919 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-10-13 13:40:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:40:09,020 INFO L225 Difference]: With dead ends: 25659 [2020-10-13 13:40:09,020 INFO L226 Difference]: Without dead ends: 20441 [2020-10-13 13:40:09,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1125, Invalid=4727, Unknown=0, NotChecked=0, Total=5852 [2020-10-13 13:40:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20441 states. [2020-10-13 13:40:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20441 to 17628. [2020-10-13 13:40:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17628 states. [2020-10-13 13:40:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17628 states to 17628 states and 27055 transitions. [2020-10-13 13:40:10,199 INFO L78 Accepts]: Start accepts. Automaton has 17628 states and 27055 transitions. Word has length 101 [2020-10-13 13:40:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:40:10,199 INFO L479 AbstractCegarLoop]: Abstraction has 17628 states and 27055 transitions. [2020-10-13 13:40:10,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:40:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 17628 states and 27055 transitions. [2020-10-13 13:40:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:40:10,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:40:10,205 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] [2020-10-13 13:40:10,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:40:10,205 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:40:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:40:10,206 INFO L82 PathProgramCache]: Analyzing trace with hash 847700711, now seen corresponding path program 1 times [2020-10-13 13:40:10,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:40:10,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870216220] [2020-10-13 13:40:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:40:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:10,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:10,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:15,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:40:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:40:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:40:15,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:40:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:40:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:40:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:15,514 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:40:15,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:40:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:15,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:15,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:15,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:40:15,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:40:15,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:40:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:15,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:15,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:40:15,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:15,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:40:15,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:40:15,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:40:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:40:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:15,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:15,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:40:15,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:15,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:40:15,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:15,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:40:15,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:15,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:40:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:15,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:15,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:15,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:15,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:40:15,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:40:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:15,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:40:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:15,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:15,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:15,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:15,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:40:15,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:15,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:40:15,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:40:15,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:40:15,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:15,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:40:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:15,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:15,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:15,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:40:15,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:15,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:40:15,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:15,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:40:15,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:15,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:40:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:15,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:15,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:40:15,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:40:15,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:40:15,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:40:15,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:40:15,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870216220] [2020-10-13 13:40:15,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:40:15,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:40:15,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412203802] [2020-10-13 13:40:15,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:40:15,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:40:15,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:40:15,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:40:15,745 INFO L87 Difference]: Start difference. First operand 17628 states and 27055 transitions. Second operand 10 states. [2020-10-13 13:40:15,945 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:40:16,401 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:40:18,724 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:40:18,970 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:40:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:40:23,151 INFO L93 Difference]: Finished difference Result 55731 states and 85973 transitions. [2020-10-13 13:40:23,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:40:23,152 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-10-13 13:40:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:40:23,337 INFO L225 Difference]: With dead ends: 55731 [2020-10-13 13:40:23,337 INFO L226 Difference]: Without dead ends: 38552 [2020-10-13 13:40:23,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:40:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38552 states. [2020-10-13 13:40:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38552 to 34005. [2020-10-13 13:40:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34005 states. [2020-10-13 13:40:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34005 states to 34005 states and 52250 transitions. [2020-10-13 13:40:26,529 INFO L78 Accepts]: Start accepts. Automaton has 34005 states and 52250 transitions. Word has length 102 [2020-10-13 13:40:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:40:26,529 INFO L479 AbstractCegarLoop]: Abstraction has 34005 states and 52250 transitions. [2020-10-13 13:40:26,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:40:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 34005 states and 52250 transitions. [2020-10-13 13:40:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:40:26,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:40:26,536 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] [2020-10-13 13:40:26,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:40:26,537 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:40:26,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:40:26,537 INFO L82 PathProgramCache]: Analyzing trace with hash 600646612, now seen corresponding path program 1 times [2020-10-13 13:40:26,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:40:26,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970536522] [2020-10-13 13:40:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:40:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:26,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:26,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:27,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:27,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:31,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:40:31,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:40:31,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:40:31,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:40:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:40:31,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:40:31,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:31,763 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:40:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:40:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:31,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:40:31,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:40:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:31,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:40:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:31,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:31,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:40:31,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:31,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:40:31,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:40:31,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:31,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:40:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:31,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:40:31,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:31,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:40:31,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:40:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:40:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:31,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:40:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:40:31,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:40:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:40:31,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:40:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:31,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:40:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:31,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:31,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:40:31,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:40:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:31,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:40:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:31,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:40:31,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:40:31,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:40:31,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:31,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:40:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:31,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:31,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:31,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:40:31,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:31,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:40:31,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:31,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:31,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:40:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:31,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:40:31,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970536522] [2020-10-13 13:40:31,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:40:31,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:40:31,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46234996] [2020-10-13 13:40:31,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:40:31,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:40:31,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:40:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:40:31,988 INFO L87 Difference]: Start difference. First operand 34005 states and 52250 transitions. Second operand 9 states. [2020-10-13 13:40:32,188 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:40:33,779 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:40:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:40:36,135 INFO L93 Difference]: Finished difference Result 76801 states and 118915 transitions. [2020-10-13 13:40:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:40:36,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-13 13:40:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:40:36,323 INFO L225 Difference]: With dead ends: 76801 [2020-10-13 13:40:36,323 INFO L226 Difference]: Without dead ends: 48488 [2020-10-13 13:40:36,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:40:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48488 states. [2020-10-13 13:40:38,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48488 to 43250. [2020-10-13 13:40:38,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43250 states. [2020-10-13 13:40:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43250 states to 43250 states and 66380 transitions. [2020-10-13 13:40:38,908 INFO L78 Accepts]: Start accepts. Automaton has 43250 states and 66380 transitions. Word has length 103 [2020-10-13 13:40:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:40:38,908 INFO L479 AbstractCegarLoop]: Abstraction has 43250 states and 66380 transitions. [2020-10-13 13:40:38,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:40:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 43250 states and 66380 transitions. [2020-10-13 13:40:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:40:38,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:40:38,911 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] [2020-10-13 13:40:38,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:40:38,911 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:40:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:40:38,912 INFO L82 PathProgramCache]: Analyzing trace with hash -369187552, now seen corresponding path program 1 times [2020-10-13 13:40:38,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:40:38,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825691502] [2020-10-13 13:40:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:40:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:39,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:39,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:44,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:44,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:40:44,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:40:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5192 [2020-10-13 13:40:44,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:40:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:40:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:40:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:44,308 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:40:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:40:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:44,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:44,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:40:44,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:40:44,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:40:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:44,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:44,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:40:44,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:40:44,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:40:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:40:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:40:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:44,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:44,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:44,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:40:44,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:40:44,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:40:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:44,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:40:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:44,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:44,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:44,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:44,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:40:44,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:44,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:40:44,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:40:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:44,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:44,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:44,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:40:44,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:40:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:40:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:44,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:44,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:40:44,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:40:44,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:40:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:40:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:40:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:40:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:44,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:44,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:44,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:44,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:40:44,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:40:44,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:40:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:40:44,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825691502] [2020-10-13 13:40:44,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:40:44,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:40:44,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897918926] [2020-10-13 13:40:44,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:40:44,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:40:44,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:40:44,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:40:44,574 INFO L87 Difference]: Start difference. First operand 43250 states and 66380 transitions. Second operand 10 states. [2020-10-13 13:40:44,773 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:40:45,241 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:40:46,499 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:40:46,680 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:40:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:40:55,686 INFO L93 Difference]: Finished difference Result 180221 states and 277308 transitions. [2020-10-13 13:40:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:40:55,687 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2020-10-13 13:40:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:40:56,248 INFO L225 Difference]: With dead ends: 180221 [2020-10-13 13:40:56,248 INFO L226 Difference]: Without dead ends: 137239 [2020-10-13 13:40:56,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:40:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137239 states. [2020-10-13 13:41:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137239 to 121838. [2020-10-13 13:41:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121838 states. [2020-10-13 13:41:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121838 states to 121838 states and 186542 transitions. [2020-10-13 13:41:02,157 INFO L78 Accepts]: Start accepts. Automaton has 121838 states and 186542 transitions. Word has length 103 [2020-10-13 13:41:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:41:02,158 INFO L479 AbstractCegarLoop]: Abstraction has 121838 states and 186542 transitions. [2020-10-13 13:41:02,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:41:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 121838 states and 186542 transitions. [2020-10-13 13:41:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:41:02,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:41:02,161 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] [2020-10-13 13:41:02,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:41:02,161 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:41:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:41:02,162 INFO L82 PathProgramCache]: Analyzing trace with hash 726627006, now seen corresponding path program 1 times [2020-10-13 13:41:02,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:41:02,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033435823] [2020-10-13 13:41:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:41:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:02,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:02,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:02,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:02,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:03,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:07,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:41:07,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:41:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:41:07,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:41:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:41:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:41:07,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:07,375 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:41:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:41:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:07,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:07,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:41:07,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:07,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:41:07,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:07,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:07,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:07,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:41:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:07,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:07,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:07,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:41:07,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:41:07,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:41:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:41:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:07,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:07,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:41:07,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:41:07,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:41:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:41:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:07,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:07,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:41:07,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:07,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:41:07,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:07,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:41:07,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:41:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:07,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:07,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 13:41:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:41:07,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:07,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:41:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:41:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:41:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:41:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:07,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:07,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:07,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:41:07,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:41:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:07,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:41:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:07,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:07,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:07,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:41:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:41:07,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:41:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:41:07,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033435823] [2020-10-13 13:41:07,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:41:07,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:41:07,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377231156] [2020-10-13 13:41:07,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:41:07,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:41:07,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:41:07,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:41:07,597 INFO L87 Difference]: Start difference. First operand 121838 states and 186542 transitions. Second operand 9 states. [2020-10-13 13:41:07,791 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:41:09,399 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 13:41:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:41:20,416 INFO L93 Difference]: Finished difference Result 321794 states and 495140 transitions. [2020-10-13 13:41:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:41:20,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-13 13:41:20,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:41:21,277 INFO L225 Difference]: With dead ends: 321794 [2020-10-13 13:41:21,277 INFO L226 Difference]: Without dead ends: 216726 [2020-10-13 13:41:21,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:41:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216726 states. [2020-10-13 13:41:35,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216726 to 194888. [2020-10-13 13:41:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194888 states. [2020-10-13 13:41:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194888 states to 194888 states and 294976 transitions. [2020-10-13 13:41:36,080 INFO L78 Accepts]: Start accepts. Automaton has 194888 states and 294976 transitions. Word has length 104 [2020-10-13 13:41:36,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:41:36,080 INFO L479 AbstractCegarLoop]: Abstraction has 194888 states and 294976 transitions. [2020-10-13 13:41:36,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:41:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 194888 states and 294976 transitions. [2020-10-13 13:41:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:41:36,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:41:36,082 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] [2020-10-13 13:41:36,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:41:36,082 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:41:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:41:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 432407000, now seen corresponding path program 1 times [2020-10-13 13:41:36,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:41:36,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779452030] [2020-10-13 13:41:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:41:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:36,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:36,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:36,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:41,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:41,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:41:41,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:41:41,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:41:41,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:41:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 13:41:41,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:41:41,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:41,298 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:41:41,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:41:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:41,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:41,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:41,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:41:41,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:41:41,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:41,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:41,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:41:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:41,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:41,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:41:41,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:41:41,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 13:41:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:41,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:41:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:41,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:41,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:41:41,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:41,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:41:41,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:41,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:41:41,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:41,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:41:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:41,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:41,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:41:41,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:41:41,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:41:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:41:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:41,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:41,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:41:41,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:41:41,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:41:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:41:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:41:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:41:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:41,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:41,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:41:41,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:41:41,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:41:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:41:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:41:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:41,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:41:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:41:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:41:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:41:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:41:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:41:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:41:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:41:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:41:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:41:41,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:41:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:41:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:41:41,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779452030] [2020-10-13 13:41:41,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:41:41,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:41:41,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583625081] [2020-10-13 13:41:41,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:41:41,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:41:41,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:41:41,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:41:41,531 INFO L87 Difference]: Start difference. First operand 194888 states and 294976 transitions. Second operand 9 states. [2020-10-13 13:41:41,728 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:41:43,917 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:41:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:41:58,137 INFO L93 Difference]: Finished difference Result 481275 states and 726539 transitions. [2020-10-13 13:41:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:41:58,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-13 13:41:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:41:58,898 INFO L225 Difference]: With dead ends: 481275 [2020-10-13 13:41:58,899 INFO L226 Difference]: Without dead ends: 286626 [2020-10-13 13:41:59,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:41:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286626 states.