/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:29:41,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:29:41,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:29:41,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:29:41,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:29:41,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:29:41,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:29:41,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:29:41,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:29:41,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:29:41,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:29:41,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:29:41,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:29:41,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:29:41,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:29:41,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:29:41,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:29:41,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:29:41,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:29:41,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:29:41,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:29:41,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:29:41,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:29:41,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:29:41,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:29:41,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:29:41,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:29:41,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:29:41,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:29:41,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:29:41,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:29:41,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:29:41,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:29:41,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:29:41,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:29:41,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:29:41,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:29:41,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:29:41,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:29:41,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:29:41,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:29:41,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:29:41,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:29:41,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:29:41,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:29:41,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:29:41,251 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:29:41,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:29:41,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:29:41,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:29:41,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:29:41,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:29:41,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:29:41,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:29:41,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:29:41,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:29:41,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:29:41,255 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:29:41,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:29:41,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:29:41,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:29:41,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:29:41,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:29:41,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:29:41,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:29:41,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:29:41,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:29:41,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:29:41,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:29:41,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:29:41,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:29:41,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:29:41,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:29:41,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:29:41,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:29:41,602 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:29:41,603 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:29:41,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-15 03:29:41,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39e6881f/91ce09c63455492b8eb0b37def1e49b1/FLAG99a9222de [2020-10-15 03:29:42,197 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:29:42,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-15 03:29:42,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39e6881f/91ce09c63455492b8eb0b37def1e49b1/FLAG99a9222de [2020-10-15 03:29:42,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39e6881f/91ce09c63455492b8eb0b37def1e49b1 [2020-10-15 03:29:42,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:29:42,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:29:42,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:29:42,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:29:42,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:29:42,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:29:42" (1/1) ... [2020-10-15 03:29:42,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17866592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:42, skipping insertion in model container [2020-10-15 03:29:42,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:29:42" (1/1) ... [2020-10-15 03:29:42,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:29:42,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:29:42,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:29:43,107 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:29:43,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:29:43,271 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:29:43,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43 WrapperNode [2020-10-15 03:29:43,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:29:43,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:29:43,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:29:43,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:29:43,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (1/1) ... [2020-10-15 03:29:43,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (1/1) ... [2020-10-15 03:29:43,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (1/1) ... [2020-10-15 03:29:43,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (1/1) ... [2020-10-15 03:29:43,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (1/1) ... [2020-10-15 03:29:43,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (1/1) ... [2020-10-15 03:29:43,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (1/1) ... [2020-10-15 03:29:43,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:29:43,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:29:43,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:29:43,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:29:43,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:29:43,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:29:43,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:29:43,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:29:43,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:29:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:29:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:29:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:29:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:29:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:29:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:29:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:29:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:29:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:29:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:29:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:29:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:29:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:29:44,559 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:29:44,560 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:29:44,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:29:44 BoogieIcfgContainer [2020-10-15 03:29:44,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:29:44,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:29:44,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:29:44,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:29:44,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:29:42" (1/3) ... [2020-10-15 03:29:44,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8bf28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:29:44, skipping insertion in model container [2020-10-15 03:29:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:29:43" (2/3) ... [2020-10-15 03:29:44,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8bf28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:29:44, skipping insertion in model container [2020-10-15 03:29:44,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:29:44" (3/3) ... [2020-10-15 03:29:44,579 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-15 03:29:44,591 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:29:44,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:29:44,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:29:44,649 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:29:44,649 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:29:44,649 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:29:44,650 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:29:44,650 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:29:44,650 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:29:44,650 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:29:44,650 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:29:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states. [2020-10-15 03:29:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-15 03:29:44,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:44,690 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] [2020-10-15 03:29:44,693 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:44,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:44,699 INFO L82 PathProgramCache]: Analyzing trace with hash 235220622, now seen corresponding path program 1 times [2020-10-15 03:29:44,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:44,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553105513] [2020-10-15 03:29:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:45,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:45,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:50,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:50,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-15 03:29:50,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:29:50,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-15 03:29:50,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:50,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 03:29:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:29:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 03:29:50,494 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:29:50,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:50,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:50,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:50,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:29:50,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:50,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:50,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:50,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:29:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:50,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553105513] [2020-10-15 03:29:50,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:50,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:29:50,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883634586] [2020-10-15 03:29:50,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:29:50,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:50,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:29:50,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:29:50,582 INFO L87 Difference]: Start difference. First operand 259 states. Second operand 4 states. [2020-10-15 03:29:50,859 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 03:29:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:52,200 INFO L93 Difference]: Finished difference Result 589 states and 954 transitions. [2020-10-15 03:29:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:29:52,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-15 03:29:52,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:52,220 INFO L225 Difference]: With dead ends: 589 [2020-10-15 03:29:52,220 INFO L226 Difference]: Without dead ends: 444 [2020-10-15 03:29:52,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:29:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-15 03:29:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 434. [2020-10-15 03:29:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-15 03:29:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 703 transitions. [2020-10-15 03:29:52,307 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 703 transitions. Word has length 95 [2020-10-15 03:29:52,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:52,308 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 703 transitions. [2020-10-15 03:29:52,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:29:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 703 transitions. [2020-10-15 03:29:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-15 03:29:52,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:52,315 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] [2020-10-15 03:29:52,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:29:52,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash -571699977, now seen corresponding path program 1 times [2020-10-15 03:29:52,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:52,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709184595] [2020-10-15 03:29:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:52,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:54,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:57,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:57,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-15 03:29:57,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:29:57,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-15 03:29:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:57,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:29:57,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-15 03:29:57,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:29:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:29:57,701 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:29:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:29:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:57,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:57,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:29:57,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:29:57,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:29:57,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:29:57,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:29:57,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:29:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:29:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:29:57,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:29:57,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:29:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:29:57,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709184595] [2020-10-15 03:29:57,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:29:57,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:29:57,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41621615] [2020-10-15 03:29:57,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:29:57,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:29:57,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:29:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:29:57,749 INFO L87 Difference]: Start difference. First operand 434 states and 703 transitions. Second operand 4 states. [2020-10-15 03:29:57,983 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:29:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:29:59,110 INFO L93 Difference]: Finished difference Result 850 states and 1363 transitions. [2020-10-15 03:29:59,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:29:59,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-15 03:29:59,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:29:59,116 INFO L225 Difference]: With dead ends: 850 [2020-10-15 03:29:59,117 INFO L226 Difference]: Without dead ends: 694 [2020-10-15 03:29:59,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:29:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-15 03:29:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 676. [2020-10-15 03:29:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-10-15 03:29:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1085 transitions. [2020-10-15 03:29:59,188 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1085 transitions. Word has length 96 [2020-10-15 03:29:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:29:59,191 INFO L479 AbstractCegarLoop]: Abstraction has 676 states and 1085 transitions. [2020-10-15 03:29:59,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:29:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1085 transitions. [2020-10-15 03:29:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 03:29:59,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:29:59,201 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] [2020-10-15 03:29:59,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:29:59,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:29:59,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:29:59,202 INFO L82 PathProgramCache]: Analyzing trace with hash 359514280, now seen corresponding path program 1 times [2020-10-15 03:29:59,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:29:59,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133759010] [2020-10-15 03:29:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:29:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:29:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:59,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:29:59,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:04,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:04,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 03:30:04,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:30:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:30:04,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:04,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:30:04,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:30:04,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:30:04,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:30:04,723 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:30:04,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:04,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:04,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:04,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:30:04,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:04,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:04,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:04,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:30:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:04,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133759010] [2020-10-15 03:30:04,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:04,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:30:04,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031449281] [2020-10-15 03:30:04,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:30:04,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:04,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:30:04,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:30:04,809 INFO L87 Difference]: Start difference. First operand 676 states and 1085 transitions. Second operand 9 states. [2020-10-15 03:30:05,062 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:30:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:10,213 INFO L93 Difference]: Finished difference Result 2929 states and 4611 transitions. [2020-10-15 03:30:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 03:30:10,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-10-15 03:30:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:10,230 INFO L225 Difference]: With dead ends: 2929 [2020-10-15 03:30:10,230 INFO L226 Difference]: Without dead ends: 2663 [2020-10-15 03:30:10,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-10-15 03:30:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2020-10-15 03:30:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 1493. [2020-10-15 03:30:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1493 states. [2020-10-15 03:30:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2372 transitions. [2020-10-15 03:30:10,375 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2372 transitions. Word has length 97 [2020-10-15 03:30:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:10,376 INFO L479 AbstractCegarLoop]: Abstraction has 1493 states and 2372 transitions. [2020-10-15 03:30:10,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:30:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2372 transitions. [2020-10-15 03:30:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-15 03:30:10,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:10,382 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] [2020-10-15 03:30:10,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:30:10,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:10,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:10,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1491130003, now seen corresponding path program 1 times [2020-10-15 03:30:10,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:10,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955073695] [2020-10-15 03:30:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:10,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:10,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:15,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:15,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-15 03:30:15,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:30:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:30:15,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:15,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:15,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:30:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-15 03:30:15,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:30:15,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:30:15,716 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:30:15,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:15,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:15,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:15,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:30:15,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:15,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:30:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:15,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955073695] [2020-10-15 03:30:15,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:15,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:30:15,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224839811] [2020-10-15 03:30:15,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:30:15,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:15,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:30:15,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:30:15,772 INFO L87 Difference]: Start difference. First operand 1493 states and 2372 transitions. Second operand 4 states. [2020-10-15 03:30:16,002 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 03:30:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:17,258 INFO L93 Difference]: Finished difference Result 3697 states and 5842 transitions. [2020-10-15 03:30:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:30:17,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-15 03:30:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:17,289 INFO L225 Difference]: With dead ends: 3697 [2020-10-15 03:30:17,289 INFO L226 Difference]: Without dead ends: 2768 [2020-10-15 03:30:17,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:30:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2020-10-15 03:30:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2686. [2020-10-15 03:30:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2686 states. [2020-10-15 03:30:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4231 transitions. [2020-10-15 03:30:17,528 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4231 transitions. Word has length 97 [2020-10-15 03:30:17,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:17,528 INFO L479 AbstractCegarLoop]: Abstraction has 2686 states and 4231 transitions. [2020-10-15 03:30:17,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:30:17,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4231 transitions. [2020-10-15 03:30:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 03:30:17,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:17,535 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] [2020-10-15 03:30:17,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:30:17,536 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:17,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:17,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1181515058, now seen corresponding path program 1 times [2020-10-15 03:30:17,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:17,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835213431] [2020-10-15 03:30:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:17,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:17,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:18,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:22,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:22,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 03:30:22,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:30:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:30:22,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:22,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:22,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:30:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:30:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:30:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:22,875 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:30:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:22,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:22,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:22,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:22,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:30:22,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:22,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:22,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:22,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:30:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:22,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835213431] [2020-10-15 03:30:22,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:22,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:30:22,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477068661] [2020-10-15 03:30:22,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:30:22,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:22,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:30:22,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:30:22,934 INFO L87 Difference]: Start difference. First operand 2686 states and 4231 transitions. Second operand 4 states. [2020-10-15 03:30:23,229 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 03:30:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:24,791 INFO L93 Difference]: Finished difference Result 7310 states and 11473 transitions. [2020-10-15 03:30:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:30:24,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-15 03:30:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:24,820 INFO L225 Difference]: With dead ends: 7310 [2020-10-15 03:30:24,821 INFO L226 Difference]: Without dead ends: 5134 [2020-10-15 03:30:24,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:30:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5134 states. [2020-10-15 03:30:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5134 to 4972. [2020-10-15 03:30:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4972 states. [2020-10-15 03:30:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 7765 transitions. [2020-10-15 03:30:25,167 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 7765 transitions. Word has length 98 [2020-10-15 03:30:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:25,167 INFO L479 AbstractCegarLoop]: Abstraction has 4972 states and 7765 transitions. [2020-10-15 03:30:25,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:30:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 7765 transitions. [2020-10-15 03:30:25,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:30:25,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:25,183 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] [2020-10-15 03:30:25,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:30:25,184 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:25,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:25,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1043864180, now seen corresponding path program 1 times [2020-10-15 03:30:25,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:25,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029815978] [2020-10-15 03:30:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:25,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:25,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:30,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:30,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:30:30,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:30:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:30:30,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:30,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:30:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-15 03:30:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:30:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:30:30,457 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:30:30,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:30,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:30,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:30,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:30,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:30:30,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:30,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:30,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029815978] [2020-10-15 03:30:30,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:30,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:30:30,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924277862] [2020-10-15 03:30:30,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:30:30,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:30,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:30:30,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:30:30,499 INFO L87 Difference]: Start difference. First operand 4972 states and 7765 transitions. Second operand 4 states. [2020-10-15 03:30:30,721 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 03:30:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:32,174 INFO L93 Difference]: Finished difference Result 13344 states and 20775 transitions. [2020-10-15 03:30:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:30:32,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-15 03:30:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:32,210 INFO L225 Difference]: With dead ends: 13344 [2020-10-15 03:30:32,210 INFO L226 Difference]: Without dead ends: 9506 [2020-10-15 03:30:32,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:30:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9506 states. [2020-10-15 03:30:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9506 to 9184. [2020-10-15 03:30:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9184 states. [2020-10-15 03:30:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9184 states to 9184 states and 14209 transitions. [2020-10-15 03:30:32,876 INFO L78 Accepts]: Start accepts. Automaton has 9184 states and 14209 transitions. Word has length 99 [2020-10-15 03:30:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:32,876 INFO L479 AbstractCegarLoop]: Abstraction has 9184 states and 14209 transitions. [2020-10-15 03:30:32,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:30:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 9184 states and 14209 transitions. [2020-10-15 03:30:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:30:32,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:32,897 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] [2020-10-15 03:30:32,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:30:32,898 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:32,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1186153521, now seen corresponding path program 1 times [2020-10-15 03:30:32,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:32,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326657942] [2020-10-15 03:30:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:32,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:32,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:37,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:37,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:30:37,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:30:37,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4541 [2020-10-15 03:30:37,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:37,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:30:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-15 03:30:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:30:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:37,711 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:30:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:37,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:37,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:30:37,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:37,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:37,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:37,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326657942] [2020-10-15 03:30:37,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:37,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:30:37,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733294215] [2020-10-15 03:30:37,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:30:37,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:37,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:30:37,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:30:37,748 INFO L87 Difference]: Start difference. First operand 9184 states and 14209 transitions. Second operand 4 states. [2020-10-15 03:30:37,987 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-15 03:30:39,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:39,887 INFO L93 Difference]: Finished difference Result 24180 states and 37283 transitions. [2020-10-15 03:30:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:30:39,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-15 03:30:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:39,938 INFO L225 Difference]: With dead ends: 24180 [2020-10-15 03:30:39,939 INFO L226 Difference]: Without dead ends: 17530 [2020-10-15 03:30:39,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:30:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17530 states. [2020-10-15 03:30:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17530 to 16888. [2020-10-15 03:30:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16888 states. [2020-10-15 03:30:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16888 states to 16888 states and 25849 transitions. [2020-10-15 03:30:41,117 INFO L78 Accepts]: Start accepts. Automaton has 16888 states and 25849 transitions. Word has length 100 [2020-10-15 03:30:41,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:30:41,117 INFO L479 AbstractCegarLoop]: Abstraction has 16888 states and 25849 transitions. [2020-10-15 03:30:41,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:30:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 16888 states and 25849 transitions. [2020-10-15 03:30:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:30:41,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:30:41,172 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] [2020-10-15 03:30:41,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:30:41,172 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:30:41,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:30:41,172 INFO L82 PathProgramCache]: Analyzing trace with hash -21590846, now seen corresponding path program 1 times [2020-10-15 03:30:41,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:30:41,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791965217] [2020-10-15 03:30:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:30:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:41,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:46,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:46,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:30:46,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:30:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:30:46,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:46,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:30:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:30:46,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:30:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:46,413 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2020-10-15 03:30:46,662 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:30:46,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:30:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:30:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:30:46,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:30:46,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:30:46,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:30:46,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:30:46,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:30:46,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:30:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:30:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:30:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:30:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:30:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:30:46,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791965217] [2020-10-15 03:30:46,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:30:46,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:30:46,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407928069] [2020-10-15 03:30:46,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:30:46,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:30:46,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:30:46,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:30:46,700 INFO L87 Difference]: Start difference. First operand 16888 states and 25849 transitions. Second operand 9 states. [2020-10-15 03:30:46,990 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:30:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:30:56,472 INFO L93 Difference]: Finished difference Result 101028 states and 152875 transitions. [2020-10-15 03:30:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 03:30:56,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-15 03:30:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:30:56,700 INFO L225 Difference]: With dead ends: 101028 [2020-10-15 03:30:56,700 INFO L226 Difference]: Without dead ends: 90586 [2020-10-15 03:30:56,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-10-15 03:30:56,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90586 states. [2020-10-15 03:31:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90586 to 48628. [2020-10-15 03:31:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48628 states. [2020-10-15 03:31:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48628 states to 48628 states and 73869 transitions. [2020-10-15 03:31:01,330 INFO L78 Accepts]: Start accepts. Automaton has 48628 states and 73869 transitions. Word has length 101 [2020-10-15 03:31:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:01,331 INFO L479 AbstractCegarLoop]: Abstraction has 48628 states and 73869 transitions. [2020-10-15 03:31:01,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:31:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand 48628 states and 73869 transitions. [2020-10-15 03:31:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:31:01,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:01,648 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] [2020-10-15 03:31:01,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:31:01,648 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:01,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:01,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1673757511, now seen corresponding path program 1 times [2020-10-15 03:31:01,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:01,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553853618] [2020-10-15 03:31:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:01,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:01,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:02,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:02,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:31:02,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:31:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-15 03:31:02,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:02,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:02,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:31:02,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:31:02,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:31:02,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:31:03,030 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:31:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:03,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:03,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:03,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:03,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:31:03,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:03,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:03,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:31:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:31:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:03,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553853618] [2020-10-15 03:31:03,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:03,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:31:03,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756642814] [2020-10-15 03:31:03,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:31:03,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:03,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:31:03,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:31:03,058 INFO L87 Difference]: Start difference. First operand 48628 states and 73869 transitions. Second operand 5 states. [2020-10-15 03:31:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:06,844 INFO L93 Difference]: Finished difference Result 97210 states and 147652 transitions. [2020-10-15 03:31:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:31:06,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-15 03:31:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:06,930 INFO L225 Difference]: With dead ends: 97210 [2020-10-15 03:31:06,931 INFO L226 Difference]: Without dead ends: 48628 [2020-10-15 03:31:07,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:31:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48628 states. [2020-10-15 03:31:10,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48628 to 48628. [2020-10-15 03:31:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48628 states. [2020-10-15 03:31:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48628 states to 48628 states and 73829 transitions. [2020-10-15 03:31:10,504 INFO L78 Accepts]: Start accepts. Automaton has 48628 states and 73829 transitions. Word has length 101 [2020-10-15 03:31:10,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:10,504 INFO L479 AbstractCegarLoop]: Abstraction has 48628 states and 73829 transitions. [2020-10-15 03:31:10,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:31:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 48628 states and 73829 transitions. [2020-10-15 03:31:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 03:31:10,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:10,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:10,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:31:10,564 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:10,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:10,564 INFO L82 PathProgramCache]: Analyzing trace with hash 121337227, now seen corresponding path program 1 times [2020-10-15 03:31:10,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:10,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749217852] [2020-10-15 03:31:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:10,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:10,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:11,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:14,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:15,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:15,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 03:31:15,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:31:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:31:15,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:15,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:15,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:31:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:31:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 03:31:15,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:15,854 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:31:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:15,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:15,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:15,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:15,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:31:15,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:15,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:15,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:31:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:15,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749217852] [2020-10-15 03:31:15,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:15,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:31:15,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281076263] [2020-10-15 03:31:15,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:31:15,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:15,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:31:15,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:31:15,904 INFO L87 Difference]: Start difference. First operand 48628 states and 73829 transitions. Second operand 6 states. [2020-10-15 03:31:16,167 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:31:21,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:21,130 INFO L93 Difference]: Finished difference Result 93702 states and 142342 transitions. [2020-10-15 03:31:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:31:21,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-15 03:31:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:21,203 INFO L225 Difference]: With dead ends: 93702 [2020-10-15 03:31:21,203 INFO L226 Difference]: Without dead ends: 48628 [2020-10-15 03:31:21,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:31:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48628 states. [2020-10-15 03:31:24,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48628 to 48628. [2020-10-15 03:31:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48628 states. [2020-10-15 03:31:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48628 states to 48628 states and 73385 transitions. [2020-10-15 03:31:24,553 INFO L78 Accepts]: Start accepts. Automaton has 48628 states and 73385 transitions. Word has length 140 [2020-10-15 03:31:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:24,553 INFO L479 AbstractCegarLoop]: Abstraction has 48628 states and 73385 transitions. [2020-10-15 03:31:24,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:31:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48628 states and 73385 transitions. [2020-10-15 03:31:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 03:31:24,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:24,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:24,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:31:24,602 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:24,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2041192688, now seen corresponding path program 1 times [2020-10-15 03:31:24,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:24,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547594311] [2020-10-15 03:31:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:24,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:28,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:28,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:29,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:29,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 03:31:29,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:31:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:31:29,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:29,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:31:29,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:31:29,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-15 03:31:29,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:29,904 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:31:29,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:29,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:29,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:29,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:31:29,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:29,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:31:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:29,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547594311] [2020-10-15 03:31:29,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:29,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:31:29,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679047328] [2020-10-15 03:31:29,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:31:29,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:29,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:31:29,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:31:29,952 INFO L87 Difference]: Start difference. First operand 48628 states and 73385 transitions. Second operand 6 states. [2020-10-15 03:31:30,216 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:31:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:31:38,066 INFO L93 Difference]: Finished difference Result 139518 states and 210109 transitions. [2020-10-15 03:31:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:31:38,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-15 03:31:38,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:31:38,222 INFO L225 Difference]: With dead ends: 139518 [2020-10-15 03:31:38,223 INFO L226 Difference]: Without dead ends: 93660 [2020-10-15 03:31:38,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:31:38,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93660 states. [2020-10-15 03:31:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93660 to 93658. [2020-10-15 03:31:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93658 states. [2020-10-15 03:31:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93658 states to 93658 states and 140415 transitions. [2020-10-15 03:31:46,462 INFO L78 Accepts]: Start accepts. Automaton has 93658 states and 140415 transitions. Word has length 140 [2020-10-15 03:31:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:31:46,462 INFO L479 AbstractCegarLoop]: Abstraction has 93658 states and 140415 transitions. [2020-10-15 03:31:46,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:31:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 93658 states and 140415 transitions. [2020-10-15 03:31:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 03:31:46,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:31:46,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:31:46,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:31:46,550 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:31:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:31:46,551 INFO L82 PathProgramCache]: Analyzing trace with hash -720909141, now seen corresponding path program 1 times [2020-10-15 03:31:46,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:31:46,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110983612] [2020-10-15 03:31:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:31:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:46,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:46,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:46,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:46,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:47,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:51,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:51,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 03:31:51,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:31:51,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:31:51,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:51,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:31:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:31:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 03:31:51,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:51,817 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:31:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:31:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:31:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:31:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:31:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:31:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:31:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:31:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:31:51,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:31:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:31:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:31:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:31:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:31:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:31:51,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110983612] [2020-10-15 03:31:51,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:31:51,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:31:51,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189370099] [2020-10-15 03:31:51,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:31:51,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:31:51,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:31:51,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:31:51,861 INFO L87 Difference]: Start difference. First operand 93658 states and 140415 transitions. Second operand 6 states. [2020-10-15 03:31:52,120 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-15 03:32:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:01,332 INFO L93 Difference]: Finished difference Result 184357 states and 276417 transitions. [2020-10-15 03:32:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:32:01,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-15 03:32:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:01,446 INFO L225 Difference]: With dead ends: 184357 [2020-10-15 03:32:01,446 INFO L226 Difference]: Without dead ends: 93658 [2020-10-15 03:32:01,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:32:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93658 states. [2020-10-15 03:32:08,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93658 to 93658. [2020-10-15 03:32:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93658 states. [2020-10-15 03:32:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93658 states to 93658 states and 139598 transitions. [2020-10-15 03:32:08,264 INFO L78 Accepts]: Start accepts. Automaton has 93658 states and 139598 transitions. Word has length 140 [2020-10-15 03:32:08,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:08,264 INFO L479 AbstractCegarLoop]: Abstraction has 93658 states and 139598 transitions. [2020-10-15 03:32:08,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:32:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 93658 states and 139598 transitions. [2020-10-15 03:32:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-15 03:32:08,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:08,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:08,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:32:08,358 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:08,358 INFO L82 PathProgramCache]: Analyzing trace with hash 395787728, now seen corresponding path program 1 times [2020-10-15 03:32:08,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:08,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239081917] [2020-10-15 03:32:08,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:08,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:08,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:08,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:09,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:11,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:11,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:13,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:13,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-15 03:32:13,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:32:13,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:32:13,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:13,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:32:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:32:13,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-15 03:32:13,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:13,639 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:32:13,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:13,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:13,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:32:13,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:13,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:32:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:32:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:13,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239081917] [2020-10-15 03:32:13,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:13,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:32:13,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971962352] [2020-10-15 03:32:13,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:32:13,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:13,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:32:13,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:32:13,691 INFO L87 Difference]: Start difference. First operand 93658 states and 139598 transitions. Second operand 6 states. [2020-10-15 03:32:13,946 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:32:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:22,953 INFO L93 Difference]: Finished difference Result 161630 states and 240848 transitions. [2020-10-15 03:32:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:32:22,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-15 03:32:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:23,081 INFO L225 Difference]: With dead ends: 161630 [2020-10-15 03:32:23,081 INFO L226 Difference]: Without dead ends: 86340 [2020-10-15 03:32:23,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:32:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86340 states. [2020-10-15 03:32:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86340 to 65426. [2020-10-15 03:32:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65426 states. [2020-10-15 03:32:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65426 states to 65426 states and 97106 transitions. [2020-10-15 03:32:28,682 INFO L78 Accepts]: Start accepts. Automaton has 65426 states and 97106 transitions. Word has length 140 [2020-10-15 03:32:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:28,683 INFO L479 AbstractCegarLoop]: Abstraction has 65426 states and 97106 transitions. [2020-10-15 03:32:28,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:32:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 65426 states and 97106 transitions. [2020-10-15 03:32:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-15 03:32:28,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:28,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:28,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:32:28,750 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:28,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1245400231, now seen corresponding path program 1 times [2020-10-15 03:32:28,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:28,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145922140] [2020-10-15 03:32:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:28,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:28,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:28,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:29,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:29,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:33,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:33,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-15 03:32:33,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:32:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:32:33,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:33,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:32:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:32:33,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:32:33,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:34,038 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:32:34,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:34,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:34,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:34,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:32:34,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:34,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:32:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:32:34,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:34,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145922140] [2020-10-15 03:32:34,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:34,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:32:34,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854342706] [2020-10-15 03:32:34,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:32:34,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:34,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:32:34,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:32:34,088 INFO L87 Difference]: Start difference. First operand 65426 states and 97106 transitions. Second operand 7 states. [2020-10-15 03:32:34,329 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-15 03:32:41,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:41,889 INFO L93 Difference]: Finished difference Result 112464 states and 166583 transitions. [2020-10-15 03:32:41,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:32:41,890 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-15 03:32:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:41,955 INFO L225 Difference]: With dead ends: 112464 [2020-10-15 03:32:41,956 INFO L226 Difference]: Without dead ends: 58094 [2020-10-15 03:32:41,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:32:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58094 states. [2020-10-15 03:32:47,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58094 to 58094. [2020-10-15 03:32:47,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58094 states. [2020-10-15 03:32:47,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58094 states to 58094 states and 86210 transitions. [2020-10-15 03:32:47,311 INFO L78 Accepts]: Start accepts. Automaton has 58094 states and 86210 transitions. Word has length 141 [2020-10-15 03:32:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:32:47,312 INFO L479 AbstractCegarLoop]: Abstraction has 58094 states and 86210 transitions. [2020-10-15 03:32:47,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:32:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 58094 states and 86210 transitions. [2020-10-15 03:32:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-15 03:32:47,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:32:47,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:32:47,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:32:47,367 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:32:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:32:47,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1689321784, now seen corresponding path program 1 times [2020-10-15 03:32:47,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:32:47,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849460060] [2020-10-15 03:32:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:32:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:47,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:47,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:47,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:47,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:47,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:50,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:50,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:52,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:52,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-15 03:32:52,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:32:52,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 03:32:52,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:52,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:32:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:32:52,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 03:32:52,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:52,656 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:32:52,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:32:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:32:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:32:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:32:52,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:32:52,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:32:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:32:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:32:52,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:32:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:32:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:32:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:32:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:32:52,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:32:52,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849460060] [2020-10-15 03:32:52,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:32:52,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:32:52,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330453033] [2020-10-15 03:32:52,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:32:52,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:32:52,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:32:52,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:32:52,711 INFO L87 Difference]: Start difference. First operand 58094 states and 86210 transitions. Second operand 6 states. [2020-10-15 03:32:52,969 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:32:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:32:59,146 INFO L93 Difference]: Finished difference Result 98206 states and 145944 transitions. [2020-10-15 03:32:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:32:59,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-10-15 03:32:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:32:59,210 INFO L225 Difference]: With dead ends: 98206 [2020-10-15 03:32:59,210 INFO L226 Difference]: Without dead ends: 53316 [2020-10-15 03:32:59,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:32:59,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53316 states. [2020-10-15 03:33:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53316 to 40014. [2020-10-15 03:33:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40014 states. [2020-10-15 03:33:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40014 states to 40014 states and 59106 transitions. [2020-10-15 03:33:03,717 INFO L78 Accepts]: Start accepts. Automaton has 40014 states and 59106 transitions. Word has length 141 [2020-10-15 03:33:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:33:03,717 INFO L479 AbstractCegarLoop]: Abstraction has 40014 states and 59106 transitions. [2020-10-15 03:33:03,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:33:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 40014 states and 59106 transitions. [2020-10-15 03:33:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-15 03:33:03,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:03,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:33:03,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:33:03,752 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:33:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1239473629, now seen corresponding path program 1 times [2020-10-15 03:33:03,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:03,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825384518] [2020-10-15 03:33:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:03,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:05,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:08,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:08,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-15 03:33:08,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:33:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:33:08,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:08,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:33:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:33:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:33:08,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:09,055 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-15 03:33:09,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:33:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:09,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:09,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:33:09,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:33:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:33:09,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:09,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:33:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:33:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:33:09,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:33:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:33:09,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825384518] [2020-10-15 03:33:09,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:33:09,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:33:09,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91264573] [2020-10-15 03:33:09,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:33:09,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:33:09,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:33:09,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:33:09,120 INFO L87 Difference]: Start difference. First operand 40014 states and 59106 transitions. Second operand 9 states. [2020-10-15 03:33:09,404 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 172