/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-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:50:48,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:50:48,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:50:48,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:50:48,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:50:48,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:50:48,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:50:48,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:50:48,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:50:48,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:50:48,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:50:48,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:50:48,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:50:48,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:50:48,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:50:48,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:50:48,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:50:48,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:50:48,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:50:48,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:50:48,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:50:48,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:50:48,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:50:48,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:50:48,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:50:48,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:50:48,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:50:48,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:50:48,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:50:48,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:50:48,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:50:48,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:50:48,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:50:48,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:50:48,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:50:48,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:50:48,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:50:48,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:50:48,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:50:48,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:50:48,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:50:48,336 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 03:50:48,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:50:48,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:50:48,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:50:48,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:50:48,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:50:48,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:50:48,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:50:48,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:50:48,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:50:48,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:50:48,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:50:48,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:50:48,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:50:48,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:50:48,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:50:48,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:50:48,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:50:48,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:50:48,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:50:48,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:50:48,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:50:48,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:50:48,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:50:48,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:50:48,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:50:48,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:50:48,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:50:48,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:50:48,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:50:48,383 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 03:50:48,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:50:48,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:50:48,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:50:48,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:50:48,678 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:50:48,678 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:50:48,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53f8baa84/53e98425292049b2b6a6cb3f118428e0/FLAG9300d7d9e [2020-10-15 03:50:49,206 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:50:49,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:50:49,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53f8baa84/53e98425292049b2b6a6cb3f118428e0/FLAG9300d7d9e [2020-10-15 03:50:49,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53f8baa84/53e98425292049b2b6a6cb3f118428e0 [2020-10-15 03:50:49,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:50:49,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:50:49,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:50:49,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:50:49,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:50:49,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:50:49" (1/1) ... [2020-10-15 03:50:49,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c05dbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:49, skipping insertion in model container [2020-10-15 03:50:49,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:50:49" (1/1) ... [2020-10-15 03:50:49,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:50:49,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:50:49,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:50:50,087 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:50:50,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:50:50,184 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:50:50,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50 WrapperNode [2020-10-15 03:50:50,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:50:50,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:50:50,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:50:50,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:50:50,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (1/1) ... [2020-10-15 03:50:50,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (1/1) ... [2020-10-15 03:50:50,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (1/1) ... [2020-10-15 03:50:50,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (1/1) ... [2020-10-15 03:50:50,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (1/1) ... [2020-10-15 03:50:50,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (1/1) ... [2020-10-15 03:50:50,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (1/1) ... [2020-10-15 03:50:50,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:50:50,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:50:50,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:50:50,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:50:50,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (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 03:50:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:50:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:50:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:50:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:50:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:50:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:50:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:50:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:50:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:50:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:50:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:50:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:50:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:50:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:50:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:50:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:50:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:50:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:50:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:50:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:50:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:50:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:50:51,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:50:51,014 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:50:51,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:50:51 BoogieIcfgContainer [2020-10-15 03:50:51,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:50:51,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:50:51,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:50:51,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:50:51,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:50:49" (1/3) ... [2020-10-15 03:50:51,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1a80d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:50:51, skipping insertion in model container [2020-10-15 03:50:51,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:50:50" (2/3) ... [2020-10-15 03:50:51,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1a80d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:50:51, skipping insertion in model container [2020-10-15 03:50:51,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:50:51" (3/3) ... [2020-10-15 03:50:51,028 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 03:50:51,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:50:51,046 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:50:51,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:50:51,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:50:51,087 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:50:51,087 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:50:51,087 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:50:51,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:50:51,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:50:51,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:50:51,088 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:50:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2020-10-15 03:50:51,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 03:50:51,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:51,122 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] [2020-10-15 03:50:51,123 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:51,129 INFO L82 PathProgramCache]: Analyzing trace with hash -153114197, now seen corresponding path program 1 times [2020-10-15 03:50:51,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:51,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136755863] [2020-10-15 03:50:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:51,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:51,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:52,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:53,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:56,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 03:50:56,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:50:56,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:50:56,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:56,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:50:56,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:50:56,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:50:56,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:50:56,957 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:50:56,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:56,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:56,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:50:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:56,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:57,023 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 03:50:57,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136755863] [2020-10-15 03:50:57,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:57,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:50:57,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290260732] [2020-10-15 03:50:57,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:50:57,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:57,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:50:57,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:57,057 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 8 states. [2020-10-15 03:50:57,369 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-15 03:50:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:58,449 INFO L93 Difference]: Finished difference Result 753 states and 1199 transitions. [2020-10-15 03:50:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:50:58,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-15 03:50:58,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:58,480 INFO L225 Difference]: With dead ends: 753 [2020-10-15 03:50:58,481 INFO L226 Difference]: Without dead ends: 627 [2020-10-15 03:50:58,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:50:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-15 03:50:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 233. [2020-10-15 03:50:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-15 03:50:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2020-10-15 03:50:58,595 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 64 [2020-10-15 03:50:58,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:58,596 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2020-10-15 03:50:58,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:50:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2020-10-15 03:50:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 03:50:58,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:58,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:58,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:50:58,612 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:58,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:58,612 INFO L82 PathProgramCache]: Analyzing trace with hash -470105524, now seen corresponding path program 1 times [2020-10-15 03:50:58,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:58,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072243286] [2020-10-15 03:50:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:58,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:02,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:02,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 03:51:02,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:51:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3747 [2020-10-15 03:51:02,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:02,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 03:51:02,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:51:02,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:02,771 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:02,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:02,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:02,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:02,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:02,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:51:02,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:02,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:02,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:51:02,828 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 03:51:02,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072243286] [2020-10-15 03:51:02,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:02,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:51:02,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187772066] [2020-10-15 03:51:02,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:51:02,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:02,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:51:02,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:51:02,835 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand 4 states. [2020-10-15 03:51:03,140 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:51:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:03,789 INFO L93 Difference]: Finished difference Result 589 states and 914 transitions. [2020-10-15 03:51:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:51:03,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-15 03:51:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:03,793 INFO L225 Difference]: With dead ends: 589 [2020-10-15 03:51:03,794 INFO L226 Difference]: Without dead ends: 395 [2020-10-15 03:51:03,800 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 03:51:03,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-15 03:51:03,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2020-10-15 03:51:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-15 03:51:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 602 transitions. [2020-10-15 03:51:03,862 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 602 transitions. Word has length 65 [2020-10-15 03:51:03,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:03,863 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 602 transitions. [2020-10-15 03:51:03,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:51:03,864 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 602 transitions. [2020-10-15 03:51:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 03:51:03,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:03,867 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] [2020-10-15 03:51:03,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:51:03,868 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:03,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:03,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1895130856, now seen corresponding path program 1 times [2020-10-15 03:51:03,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:03,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934897300] [2020-10-15 03:51:03,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:04,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:05,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 03:51:05,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:51:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1940 [2020-10-15 03:51:05,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:05,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:05,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:05,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 03:51:05,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:51:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:06,039 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:06,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:06,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:06,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:51:06,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:06,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:06,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:06,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:06,075 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 03:51:06,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934897300] [2020-10-15 03:51:06,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:06,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:51:06,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123970214] [2020-10-15 03:51:06,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:51:06,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:06,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:51:06,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:51:06,081 INFO L87 Difference]: Start difference. First operand 393 states and 602 transitions. Second operand 4 states. [2020-10-15 03:51:06,276 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:51:07,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:07,111 INFO L93 Difference]: Finished difference Result 1037 states and 1624 transitions. [2020-10-15 03:51:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:51:07,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-15 03:51:07,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:07,125 INFO L225 Difference]: With dead ends: 1037 [2020-10-15 03:51:07,125 INFO L226 Difference]: Without dead ends: 683 [2020-10-15 03:51:07,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:51:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-10-15 03:51:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 681. [2020-10-15 03:51:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-10-15 03:51:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1056 transitions. [2020-10-15 03:51:07,189 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1056 transitions. Word has length 66 [2020-10-15 03:51:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:07,191 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 1056 transitions. [2020-10-15 03:51:07,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:51:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1056 transitions. [2020-10-15 03:51:07,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:51:07,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:07,201 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] [2020-10-15 03:51:07,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:51:07,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:07,203 INFO L82 PathProgramCache]: Analyzing trace with hash -507686236, now seen corresponding path program 1 times [2020-10-15 03:51:07,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:07,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244823987] [2020-10-15 03:51:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:07,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:08,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:08,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:51:08,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:51:08,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 976 [2020-10-15 03:51:08,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:08,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:08,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-15 03:51:08,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:51:08,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:51:08,461 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:08,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:08,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:08,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:08,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:08,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:51:08,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:08,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:08,502 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 03:51:08,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244823987] [2020-10-15 03:51:08,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:08,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:51:08,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398474894] [2020-10-15 03:51:08,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:51:08,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:08,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:51:08,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:51:08,506 INFO L87 Difference]: Start difference. First operand 681 states and 1056 transitions. Second operand 4 states. [2020-10-15 03:51:08,690 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:51:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:09,388 INFO L93 Difference]: Finished difference Result 1837 states and 2882 transitions. [2020-10-15 03:51:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:51:09,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-15 03:51:09,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:09,397 INFO L225 Difference]: With dead ends: 1837 [2020-10-15 03:51:09,397 INFO L226 Difference]: Without dead ends: 1195 [2020-10-15 03:51:09,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:51:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-15 03:51:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1193. [2020-10-15 03:51:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-10-15 03:51:09,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1856 transitions. [2020-10-15 03:51:09,472 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1856 transitions. Word has length 67 [2020-10-15 03:51:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:09,473 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1856 transitions. [2020-10-15 03:51:09,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:51:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1856 transitions. [2020-10-15 03:51:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:51:09,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:09,475 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] [2020-10-15 03:51:09,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:51:09,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:09,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash 866082344, now seen corresponding path program 1 times [2020-10-15 03:51:09,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:09,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295197686] [2020-10-15 03:51:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:09,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:09,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:51:09,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:51:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-15 03:51:09,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:09,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-15 03:51:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:51:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:10,292 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:10,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:10,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:10,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:51:10,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:10,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:10,343 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 03:51:10,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295197686] [2020-10-15 03:51:10,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:10,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:51:10,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170955497] [2020-10-15 03:51:10,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:51:10,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:10,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:51:10,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:51:10,347 INFO L87 Difference]: Start difference. First operand 1193 states and 1856 transitions. Second operand 4 states. [2020-10-15 03:51:10,581 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:51:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:11,347 INFO L93 Difference]: Finished difference Result 3245 states and 5074 transitions. [2020-10-15 03:51:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:51:11,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-15 03:51:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:11,359 INFO L225 Difference]: With dead ends: 3245 [2020-10-15 03:51:11,360 INFO L226 Difference]: Without dead ends: 2091 [2020-10-15 03:51:11,362 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 03:51:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2020-10-15 03:51:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2089. [2020-10-15 03:51:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2089 states. [2020-10-15 03:51:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 3240 transitions. [2020-10-15 03:51:11,493 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 3240 transitions. Word has length 68 [2020-10-15 03:51:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:11,494 INFO L479 AbstractCegarLoop]: Abstraction has 2089 states and 3240 transitions. [2020-10-15 03:51:11,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:51:11,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 3240 transitions. [2020-10-15 03:51:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:51:11,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:11,495 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] [2020-10-15 03:51:11,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:51:11,495 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1408508889, now seen corresponding path program 1 times [2020-10-15 03:51:11,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:11,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937391966] [2020-10-15 03:51:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:11,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:11,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:11,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:51:11,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:51:11,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-15 03:51:11,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:11,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:11,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-15 03:51:11,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 03:51:11,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:51:12,086 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:12,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:51:12,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:12,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:12,136 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 03:51:12,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937391966] [2020-10-15 03:51:12,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:12,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:51:12,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948103850] [2020-10-15 03:51:12,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:51:12,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:12,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:51:12,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:51:12,141 INFO L87 Difference]: Start difference. First operand 2089 states and 3240 transitions. Second operand 4 states. [2020-10-15 03:51:12,351 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-15 03:51:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:13,213 INFO L93 Difference]: Finished difference Result 5677 states and 8810 transitions. [2020-10-15 03:51:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:51:13,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-15 03:51:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:13,238 INFO L225 Difference]: With dead ends: 5677 [2020-10-15 03:51:13,238 INFO L226 Difference]: Without dead ends: 3627 [2020-10-15 03:51:13,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:51:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2020-10-15 03:51:13,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3625. [2020-10-15 03:51:13,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3625 states. [2020-10-15 03:51:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5576 transitions. [2020-10-15 03:51:13,542 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5576 transitions. Word has length 69 [2020-10-15 03:51:13,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:13,544 INFO L479 AbstractCegarLoop]: Abstraction has 3625 states and 5576 transitions. [2020-10-15 03:51:13,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:51:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5576 transitions. [2020-10-15 03:51:13,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:51:13,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:13,545 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] [2020-10-15 03:51:13,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:51:13,545 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:13,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:13,546 INFO L82 PathProgramCache]: Analyzing trace with hash 666361810, now seen corresponding path program 1 times [2020-10-15 03:51:13,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:13,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180444295] [2020-10-15 03:51:13,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:13,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:14,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:14,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:51:14,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:51:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-15 03:51:14,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:14,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:51:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:51:14,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:51:14,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:14,309 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:14,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:14,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:14,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:14,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:14,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:14,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 03:51:14,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:14,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:14,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:14,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:14,401 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 03:51:14,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180444295] [2020-10-15 03:51:14,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:14,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:51:14,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269883206] [2020-10-15 03:51:14,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:51:14,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:14,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:51:14,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:14,404 INFO L87 Difference]: Start difference. First operand 3625 states and 5576 transitions. Second operand 8 states. [2020-10-15 03:51:16,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:16,950 INFO L93 Difference]: Finished difference Result 18835 states and 28781 transitions. [2020-10-15 03:51:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:51:16,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:51:16,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:17,025 INFO L225 Difference]: With dead ends: 18835 [2020-10-15 03:51:17,026 INFO L226 Difference]: Without dead ends: 15249 [2020-10-15 03:51:17,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15249 states. [2020-10-15 03:51:17,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15249 to 15241. [2020-10-15 03:51:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15241 states. [2020-10-15 03:51:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15241 states to 15241 states and 23176 transitions. [2020-10-15 03:51:17,985 INFO L78 Accepts]: Start accepts. Automaton has 15241 states and 23176 transitions. Word has length 70 [2020-10-15 03:51:17,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:17,985 INFO L479 AbstractCegarLoop]: Abstraction has 15241 states and 23176 transitions. [2020-10-15 03:51:17,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:51:17,986 INFO L276 IsEmpty]: Start isEmpty. Operand 15241 states and 23176 transitions. [2020-10-15 03:51:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:51:17,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:17,994 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] [2020-10-15 03:51:17,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:51:17,995 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:17,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:17,995 INFO L82 PathProgramCache]: Analyzing trace with hash -45107205, now seen corresponding path program 1 times [2020-10-15 03:51:17,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:17,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564381255] [2020-10-15 03:51:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:18,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:18,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:51:18,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:51:18,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-15 03:51:18,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:18,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:51:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:51:18,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:51:18,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:51:18,843 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:18,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:18,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:18,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:18,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:51:18,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:18,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:18,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:51:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:18,903 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 03:51:18,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564381255] [2020-10-15 03:51:18,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:18,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:51:18,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704851009] [2020-10-15 03:51:18,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:51:18,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:18,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:51:18,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:51:18,910 INFO L87 Difference]: Start difference. First operand 15241 states and 23176 transitions. Second operand 6 states. [2020-10-15 03:51:19,121 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-15 03:51:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:21,162 INFO L93 Difference]: Finished difference Result 45357 states and 68874 transitions. [2020-10-15 03:51:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:51:21,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-15 03:51:21,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:21,247 INFO L225 Difference]: With dead ends: 45357 [2020-10-15 03:51:21,247 INFO L226 Difference]: Without dead ends: 30155 [2020-10-15 03:51:21,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30155 states. [2020-10-15 03:51:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30155 to 30153. [2020-10-15 03:51:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30153 states. [2020-10-15 03:51:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30153 states to 30153 states and 45448 transitions. [2020-10-15 03:51:23,532 INFO L78 Accepts]: Start accepts. Automaton has 30153 states and 45448 transitions. Word has length 72 [2020-10-15 03:51:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:23,533 INFO L479 AbstractCegarLoop]: Abstraction has 30153 states and 45448 transitions. [2020-10-15 03:51:23,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:51:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 30153 states and 45448 transitions. [2020-10-15 03:51:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:51:23,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:23,535 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] [2020-10-15 03:51:23,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:51:23,535 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:23,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:23,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1442063136, now seen corresponding path program 1 times [2020-10-15 03:51:23,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:23,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893844355] [2020-10-15 03:51:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:23,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:23,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:51:23,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:23,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-15 03:51:23,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:23,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:51:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 03:51:23,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 03:51:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:23,862 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:23,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:23,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:23,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:23,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:51:23,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:23,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:23,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:23,890 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 03:51:23,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893844355] [2020-10-15 03:51:23,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:23,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:51:23,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136358419] [2020-10-15 03:51:23,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:51:23,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:23,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:51:23,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:51:23,893 INFO L87 Difference]: Start difference. First operand 30153 states and 45448 transitions. Second operand 5 states. [2020-10-15 03:51:27,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:27,186 INFO L93 Difference]: Finished difference Result 61547 states and 92137 transitions. [2020-10-15 03:51:27,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:51:27,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-15 03:51:27,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:27,329 INFO L225 Difference]: With dead ends: 61547 [2020-10-15 03:51:27,330 INFO L226 Difference]: Without dead ends: 61545 [2020-10-15 03:51:27,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:51:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61545 states. [2020-10-15 03:51:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61545 to 31433. [2020-10-15 03:51:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31433 states. [2020-10-15 03:51:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31433 states to 31433 states and 46728 transitions. [2020-10-15 03:51:29,299 INFO L78 Accepts]: Start accepts. Automaton has 31433 states and 46728 transitions. Word has length 72 [2020-10-15 03:51:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:29,299 INFO L479 AbstractCegarLoop]: Abstraction has 31433 states and 46728 transitions. [2020-10-15 03:51:29,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:51:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 31433 states and 46728 transitions. [2020-10-15 03:51:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:51:29,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:29,301 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] [2020-10-15 03:51:29,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:51:29,301 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:29,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:29,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1744664474, now seen corresponding path program 1 times [2020-10-15 03:51:29,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:29,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247552846] [2020-10-15 03:51:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:29,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:29,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:29,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:51:29,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:29,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-15 03:51:29,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:29,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:29,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:51:29,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:51:29,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:29,583 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:29,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:29,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:29,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:51:29,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:29,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:29,611 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 03:51:29,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247552846] [2020-10-15 03:51:29,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:29,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:51:29,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405149115] [2020-10-15 03:51:29,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:51:29,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:29,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:51:29,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:51:29,613 INFO L87 Difference]: Start difference. First operand 31433 states and 46728 transitions. Second operand 4 states. [2020-10-15 03:51:29,769 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-15 03:51:32,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:32,428 INFO L93 Difference]: Finished difference Result 70143 states and 104124 transitions. [2020-10-15 03:51:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:51:32,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-15 03:51:32,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:32,479 INFO L225 Difference]: With dead ends: 70143 [2020-10-15 03:51:32,480 INFO L226 Difference]: Without dead ends: 38749 [2020-10-15 03:51:32,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:51:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38749 states. [2020-10-15 03:51:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38749 to 38747. [2020-10-15 03:51:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38747 states. [2020-10-15 03:51:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38747 states to 38747 states and 57290 transitions. [2020-10-15 03:51:35,559 INFO L78 Accepts]: Start accepts. Automaton has 38747 states and 57290 transitions. Word has length 73 [2020-10-15 03:51:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:35,559 INFO L479 AbstractCegarLoop]: Abstraction has 38747 states and 57290 transitions. [2020-10-15 03:51:35,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:51:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 38747 states and 57290 transitions. [2020-10-15 03:51:35,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-15 03:51:35,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:35,578 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:35,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:51:35,578 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:35,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:35,578 INFO L82 PathProgramCache]: Analyzing trace with hash 282545897, now seen corresponding path program 1 times [2020-10-15 03:51:35,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:35,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689171513] [2020-10-15 03:51:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:35,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:36,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:36,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:37,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 03:51:37,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:51:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1394 [2020-10-15 03:51:37,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:37,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:51:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:51:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:51:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:37,268 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:37,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:37,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:37,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:37,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:51:37,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:37,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 03:51:37,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689171513] [2020-10-15 03:51:37,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:51:37,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 03:51:37,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272056418] [2020-10-15 03:51:37,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:51:37,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:37,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:51:37,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:51:37,362 INFO L87 Difference]: Start difference. First operand 38747 states and 57290 transitions. Second operand 5 states. [2020-10-15 03:51:37,630 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-15 03:51:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:41,247 INFO L93 Difference]: Finished difference Result 98273 states and 145469 transitions. [2020-10-15 03:51:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:51:41,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-15 03:51:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:41,328 INFO L225 Difference]: With dead ends: 98273 [2020-10-15 03:51:41,328 INFO L226 Difference]: Without dead ends: 66879 [2020-10-15 03:51:41,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:51:41,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66879 states. [2020-10-15 03:51:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66879 to 66875. [2020-10-15 03:51:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66875 states. [2020-10-15 03:51:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66875 states to 66875 states and 98170 transitions. [2020-10-15 03:51:46,061 INFO L78 Accepts]: Start accepts. Automaton has 66875 states and 98170 transitions. Word has length 98 [2020-10-15 03:51:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:46,061 INFO L479 AbstractCegarLoop]: Abstraction has 66875 states and 98170 transitions. [2020-10-15 03:51:46,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:51:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 66875 states and 98170 transitions. [2020-10-15 03:51:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:51:46,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:46,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:51:46,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:51:46,076 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:46,076 INFO L82 PathProgramCache]: Analyzing trace with hash 642268685, now seen corresponding path program 1 times [2020-10-15 03:51:46,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:46,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700737612] [2020-10-15 03:51:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:48,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:51,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:51,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:51:51,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:51:51,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:51:51,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:51,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:51:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:51:51,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-15 03:51:51,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:51,339 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:51:51,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:51,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:51,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:51,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:51,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:51,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:51:51,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:51,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:51,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:51:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 03:51:51,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700737612] [2020-10-15 03:51:51,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:51:51,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:51:51,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60841170] [2020-10-15 03:51:51,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:51:51,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:51:51,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:51,392 INFO L87 Difference]: Start difference. First operand 66875 states and 98170 transitions. Second operand 8 states. [2020-10-15 03:51:51,638 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:52:03,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:03,362 INFO L93 Difference]: Finished difference Result 230767 states and 343237 transitions. [2020-10-15 03:52:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:52:03,363 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:52:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:03,610 INFO L225 Difference]: With dead ends: 230767 [2020-10-15 03:52:03,610 INFO L226 Difference]: Without dead ends: 198509 [2020-10-15 03:52:03,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:52:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198509 states. [2020-10-15 03:52:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198509 to 111739. [2020-10-15 03:52:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111739 states. [2020-10-15 03:52:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111739 states to 111739 states and 164330 transitions. [2020-10-15 03:52:12,616 INFO L78 Accepts]: Start accepts. Automaton has 111739 states and 164330 transitions. Word has length 99 [2020-10-15 03:52:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:12,616 INFO L479 AbstractCegarLoop]: Abstraction has 111739 states and 164330 transitions. [2020-10-15 03:52:12,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 111739 states and 164330 transitions. [2020-10-15 03:52:12,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:52:12,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:12,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:12,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:52:12,631 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:12,631 INFO L82 PathProgramCache]: Analyzing trace with hash -857628595, now seen corresponding path program 1 times [2020-10-15 03:52:12,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:12,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78214317] [2020-10-15 03:52:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:12,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:13,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:52:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:52:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:52:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:17,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:52:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 03:52:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:17,893 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:52:17,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:17,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:17,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:17,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:52:17,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:17,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 03:52:17,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78214317] [2020-10-15 03:52:17,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:52:17,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:52:17,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608744290] [2020-10-15 03:52:17,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:17,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:17,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:17,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:17,940 INFO L87 Difference]: Start difference. First operand 111739 states and 164330 transitions. Second operand 8 states. [2020-10-15 03:52:18,159 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:52:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:30,464 INFO L93 Difference]: Finished difference Result 263967 states and 390205 transitions. [2020-10-15 03:52:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:52:30,465 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:52:30,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:30,741 INFO L225 Difference]: With dead ends: 263967 [2020-10-15 03:52:30,741 INFO L226 Difference]: Without dead ends: 221533 [2020-10-15 03:52:30,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:52:30,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221533 states. [2020-10-15 03:52:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221533 to 133459. [2020-10-15 03:52:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133459 states. [2020-10-15 03:52:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133459 states to 133459 states and 196250 transitions. [2020-10-15 03:52:42,069 INFO L78 Accepts]: Start accepts. Automaton has 133459 states and 196250 transitions. Word has length 99 [2020-10-15 03:52:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:42,069 INFO L479 AbstractCegarLoop]: Abstraction has 133459 states and 196250 transitions. [2020-10-15 03:52:42,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 133459 states and 196250 transitions. [2020-10-15 03:52:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:52:42,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:42,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:42,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:52:42,081 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1958887852, now seen corresponding path program 1 times [2020-10-15 03:52:42,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:42,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095177234] [2020-10-15 03:52:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:42,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:42,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:47,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:47,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:52:47,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:52:47,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 03:52:47,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:47,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:52:47,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 03:52:47,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:47,295 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:52:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:47,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:47,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:52:47,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:47,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:47,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-15 03:52:47,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095177234] [2020-10-15 03:52:47,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:52:47,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:52:47,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993159271] [2020-10-15 03:52:47,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:47,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:47,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:47,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:47,341 INFO L87 Difference]: Start difference. First operand 133459 states and 196250 transitions. Second operand 8 states. [2020-10-15 03:52:47,552 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:53:04,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:04,934 INFO L93 Difference]: Finished difference Result 267075 states and 394333 transitions. [2020-10-15 03:53:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:53:04,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:53:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:05,207 INFO L225 Difference]: With dead ends: 267075 [2020-10-15 03:53:05,207 INFO L226 Difference]: Without dead ends: 237921 [2020-10-15 03:53:05,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:53:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237921 states. [2020-10-15 03:53:17,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237921 to 148371. [2020-10-15 03:53:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148371 states. [2020-10-15 03:53:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148371 states to 148371 states and 218202 transitions. [2020-10-15 03:53:17,682 INFO L78 Accepts]: Start accepts. Automaton has 148371 states and 218202 transitions. Word has length 99 [2020-10-15 03:53:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:17,683 INFO L479 AbstractCegarLoop]: Abstraction has 148371 states and 218202 transitions. [2020-10-15 03:53:17,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:53:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 148371 states and 218202 transitions. [2020-10-15 03:53:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:53:17,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:17,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:17,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:53:17,696 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:17,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:17,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1472052021, now seen corresponding path program 1 times [2020-10-15 03:53:17,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:17,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154294660] [2020-10-15 03:53:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:22,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:22,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:53:22,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:53:22,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-15 03:53:22,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:22,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:22,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:53:22,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:53:22,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 03:53:22,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:23,056 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:23,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:23,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:53:23,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:23,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-15 03:53:23,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154294660] [2020-10-15 03:53:23,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:53:23,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:53:23,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400051804] [2020-10-15 03:53:23,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:53:23,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:23,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:53:23,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:23,097 INFO L87 Difference]: Start difference. First operand 148371 states and 218202 transitions. Second operand 8 states. [2020-10-15 03:53:23,304 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:53:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:38,365 INFO L93 Difference]: Finished difference Result 260657 states and 384379 transitions. [2020-10-15 03:53:38,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:53:38,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:53:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:38,646 INFO L225 Difference]: With dead ends: 260657 [2020-10-15 03:53:38,646 INFO L226 Difference]: Without dead ends: 245647 [2020-10-15 03:53:38,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:53:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245647 states. [2020-10-15 03:53:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245647 to 156043. [2020-10-15 03:53:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156043 states. [2020-10-15 03:53:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156043 states to 156043 states and 229466 transitions. [2020-10-15 03:53:54,016 INFO L78 Accepts]: Start accepts. Automaton has 156043 states and 229466 transitions. Word has length 99 [2020-10-15 03:53:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:54,016 INFO L479 AbstractCegarLoop]: Abstraction has 156043 states and 229466 transitions. [2020-10-15 03:53:54,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:53:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 156043 states and 229466 transitions. [2020-10-15 03:53:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-15 03:53:54,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:54,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:54,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:53:54,029 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:54,029 INFO L82 PathProgramCache]: Analyzing trace with hash 36556056, now seen corresponding path program 1 times [2020-10-15 03:53:54,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:54,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886884643] [2020-10-15 03:53:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:54,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:55,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:55,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-15 03:53:55,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:53:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-15 03:53:55,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:55,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:53:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:53:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 03:53:55,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:55,371 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-15 03:53:55,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:55,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:55,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:55,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:55,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:53:55,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:55,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:53:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:55,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:53:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 03:53:55,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886884643] [2020-10-15 03:53:55,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 03:53:55,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 03:53:55,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219147876] [2020-10-15 03:53:55,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:53:55,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:55,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:53:55,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:55,410 INFO L87 Difference]: Start difference. First operand 156043 states and 229466 transitions. Second operand 8 states. [2020-10-15 03:53:55,628 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-15 03:54:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:54:14,069 INFO L93 Difference]: Finished difference Result 324007 states and 477981 transitions. [2020-10-15 03:54:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:54:14,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-15 03:54:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:54:14,384 INFO L225 Difference]: With dead ends: 324007 [2020-10-15 03:54:14,384 INFO L226 Difference]: Without dead ends: 269157 [2020-10-15 03:54:14,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:54:14,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269157 states.