/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.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:41:29,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:41:29,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:41:29,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:41:29,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:41:29,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:41:29,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:41:29,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:41:29,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:41:29,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:41:29,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:41:29,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:41:29,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:41:29,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:41:29,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:41:29,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:41:29,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:41:29,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:41:29,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:41:29,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:41:29,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:41:29,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:41:29,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:41:29,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:41:29,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:41:29,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:41:29,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:41:29,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:41:29,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:41:29,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:41:29,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:41:29,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:41:29,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:41:29,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:41:29,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:41:29,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:41:29,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:41:29,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:41:29,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:41:29,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:41:29,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:41:29,325 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 03:41:29,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:41:29,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:41:29,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:41:29,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:41:29,375 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:41:29,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:41:29,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:41:29,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:41:29,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:41:29,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:41:29,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:41:29,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:41:29,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:41:29,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:41:29,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:41:29,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:41:29,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:41:29,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:41:29,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:41:29,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:41:29,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:41:29,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:41:29,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:41:29,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:41:29,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:41:29,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:41:29,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:41:29,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:41:29,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:41:29,381 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 03:41:29,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:41:29,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:41:29,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:41:29,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:41:29,705 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:41:29,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:41:29,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561ab5f16/b04f759d45a246a58f566c0414b66587/FLAG13bfcad5f [2020-10-15 03:41:30,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:41:30,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:41:30,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561ab5f16/b04f759d45a246a58f566c0414b66587/FLAG13bfcad5f [2020-10-15 03:41:30,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561ab5f16/b04f759d45a246a58f566c0414b66587 [2020-10-15 03:41:30,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:41:30,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:41:30,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:41:30,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:41:30,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:41:30,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:41:30" (1/1) ... [2020-10-15 03:41:30,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4b9e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:30, skipping insertion in model container [2020-10-15 03:41:30,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:41:30" (1/1) ... [2020-10-15 03:41:30,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:41:30,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:41:30,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:41:30,985 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:41:31,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:41:31,203 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:41:31,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31 WrapperNode [2020-10-15 03:41:31,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:41:31,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:41:31,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:41:31,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:41:31,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (1/1) ... [2020-10-15 03:41:31,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (1/1) ... [2020-10-15 03:41:31,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (1/1) ... [2020-10-15 03:41:31,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (1/1) ... [2020-10-15 03:41:31,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (1/1) ... [2020-10-15 03:41:31,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (1/1) ... [2020-10-15 03:41:31,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (1/1) ... [2020-10-15 03:41:31,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:41:31,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:41:31,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:41:31,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:41:31,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (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 03:41:31,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:41:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:41:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:41:31,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:41:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:41:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:41:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:41:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:41:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:41:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:41:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:41:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:41:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:41:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:41:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:41:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:41:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:41:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:41:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:41:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:41:31,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:41:32,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:41:32,075 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:41:32,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:41:32 BoogieIcfgContainer [2020-10-15 03:41:32,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:41:32,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:41:32,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:41:32,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:41:32,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:41:30" (1/3) ... [2020-10-15 03:41:32,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f31e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:41:32, skipping insertion in model container [2020-10-15 03:41:32,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:41:31" (2/3) ... [2020-10-15 03:41:32,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f31e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:41:32, skipping insertion in model container [2020-10-15 03:41:32,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:41:32" (3/3) ... [2020-10-15 03:41:32,090 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:41:32,101 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:41:32,110 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:41:32,125 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:41:32,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:41:32,153 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:41:32,153 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:41:32,153 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:41:32,153 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:41:32,154 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:41:32,154 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:41:32,154 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:41:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-10-15 03:41:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:41:32,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:32,189 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] [2020-10-15 03:41:32,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:32,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:32,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1362834774, now seen corresponding path program 1 times [2020-10-15 03:41:32,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:32,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63096606] [2020-10-15 03:41:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:32,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:33,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:33,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:41:33,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:41:33,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1465 [2020-10-15 03:41:33,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:33,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:41:33,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:41:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:41:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:41:34,209 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:41:34,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:34,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:34,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:34,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:34,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:41:34,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:34,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:41:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:34,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:41:34,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:41:34,263 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 03:41:34,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63096606] [2020-10-15 03:41:34,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:34,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:41:34,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298861764] [2020-10-15 03:41:34,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:41:34,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:34,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:41:34,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:41:34,293 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 6 states. [2020-10-15 03:41:34,525 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-15 03:41:35,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:35,428 INFO L93 Difference]: Finished difference Result 476 states and 764 transitions. [2020-10-15 03:41:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:41:35,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-15 03:41:35,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:35,448 INFO L225 Difference]: With dead ends: 476 [2020-10-15 03:41:35,448 INFO L226 Difference]: Without dead ends: 397 [2020-10-15 03:41:35,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:41:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-15 03:41:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 235. [2020-10-15 03:41:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-15 03:41:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 351 transitions. [2020-10-15 03:41:35,526 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 351 transitions. Word has length 52 [2020-10-15 03:41:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:35,527 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 351 transitions. [2020-10-15 03:41:35,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:41:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 351 transitions. [2020-10-15 03:41:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:41:35,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:35,530 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] [2020-10-15 03:41:35,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:41:35,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:35,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:35,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2068505343, now seen corresponding path program 1 times [2020-10-15 03:41:35,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:35,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549769] [2020-10-15 03:41:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:35,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:37,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:39,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:39,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:41:39,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:41:39,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3601 [2020-10-15 03:41:39,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:39,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:41:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:41:39,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:41:39,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:41:39,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:39,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:39,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:39,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:39,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:39,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:41:39,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:39,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:41:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:39,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:41:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:41:39,326 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 03:41:39,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549769] [2020-10-15 03:41:39,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:39,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:41:39,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943099475] [2020-10-15 03:41:39,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:41:39,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:39,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:41:39,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:41:39,330 INFO L87 Difference]: Start difference. First operand 235 states and 351 transitions. Second operand 6 states. [2020-10-15 03:41:40,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:40,064 INFO L93 Difference]: Finished difference Result 570 states and 876 transitions. [2020-10-15 03:41:40,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:41:40,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-15 03:41:40,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:40,068 INFO L225 Difference]: With dead ends: 570 [2020-10-15 03:41:40,069 INFO L226 Difference]: Without dead ends: 511 [2020-10-15 03:41:40,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:41:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-15 03:41:40,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 372. [2020-10-15 03:41:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-10-15 03:41:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 567 transitions. [2020-10-15 03:41:40,105 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 567 transitions. Word has length 55 [2020-10-15 03:41:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:40,105 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 567 transitions. [2020-10-15 03:41:40,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:41:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 567 transitions. [2020-10-15 03:41:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:41:40,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:40,108 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] [2020-10-15 03:41:40,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:41:40,109 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:40,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:40,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2084656831, now seen corresponding path program 1 times [2020-10-15 03:41:40,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:40,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055856539] [2020-10-15 03:41:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:40,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:40,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:42,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:42,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:41:42,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:41:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2736 [2020-10-15 03:41:42,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:42,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:42,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:41:42,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:41:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:41:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:41:43,100 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:41:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:43,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:43,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:43,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:41:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:43,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:41:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:41:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:41:43,142 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 03:41:43,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055856539] [2020-10-15 03:41:43,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:43,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:41:43,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099433783] [2020-10-15 03:41:43,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:41:43,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:43,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:41:43,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:41:43,147 INFO L87 Difference]: Start difference. First operand 372 states and 567 transitions. Second operand 6 states. [2020-10-15 03:41:43,334 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-15 03:41:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:44,207 INFO L93 Difference]: Finished difference Result 748 states and 1153 transitions. [2020-10-15 03:41:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:41:44,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-15 03:41:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:44,214 INFO L225 Difference]: With dead ends: 748 [2020-10-15 03:41:44,214 INFO L226 Difference]: Without dead ends: 634 [2020-10-15 03:41:44,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:41:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-10-15 03:41:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 447. [2020-10-15 03:41:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-10-15 03:41:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 685 transitions. [2020-10-15 03:41:44,255 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 685 transitions. Word has length 55 [2020-10-15 03:41:44,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:44,256 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 685 transitions. [2020-10-15 03:41:44,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:41:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 685 transitions. [2020-10-15 03:41:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:41:44,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:44,259 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] [2020-10-15 03:41:44,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:41:44,259 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:44,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:44,260 INFO L82 PathProgramCache]: Analyzing trace with hash 63018877, now seen corresponding path program 1 times [2020-10-15 03:41:44,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:44,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980864147] [2020-10-15 03:41:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:44,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:46,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:46,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:41:46,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:41:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2025 [2020-10-15 03:41:46,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:46,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:41:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:41:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:41:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:41:46,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:46,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:46,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:46,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:46,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:41:46,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:46,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:46,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:41:46,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:41:46,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:41:46,472 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 03:41:46,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980864147] [2020-10-15 03:41:46,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:46,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:41:46,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814695199] [2020-10-15 03:41:46,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:41:46,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:46,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:41:46,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:41:46,475 INFO L87 Difference]: Start difference. First operand 447 states and 685 transitions. Second operand 6 states. [2020-10-15 03:41:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:47,248 INFO L93 Difference]: Finished difference Result 844 states and 1303 transitions. [2020-10-15 03:41:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:41:47,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-15 03:41:47,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:47,256 INFO L225 Difference]: With dead ends: 844 [2020-10-15 03:41:47,256 INFO L226 Difference]: Without dead ends: 730 [2020-10-15 03:41:47,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:41:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-15 03:41:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 528. [2020-10-15 03:41:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-10-15 03:41:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 813 transitions. [2020-10-15 03:41:47,290 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 813 transitions. Word has length 55 [2020-10-15 03:41:47,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:47,292 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 813 transitions. [2020-10-15 03:41:47,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:41:47,292 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 813 transitions. [2020-10-15 03:41:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 03:41:47,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:47,298 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] [2020-10-15 03:41:47,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:41:47,299 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:47,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:47,299 INFO L82 PathProgramCache]: Analyzing trace with hash 621470282, now seen corresponding path program 1 times [2020-10-15 03:41:47,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:47,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834922755] [2020-10-15 03:41:47,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:48,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:49,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:49,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:52,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:52,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 03:41:52,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:41:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:41:52,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:52,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:41:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:41:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:41:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:41:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:52,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:52,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:52,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:52,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:41:52,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:52,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:41:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:41:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:41:52,627 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 03:41:52,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834922755] [2020-10-15 03:41:52,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:52,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:41:52,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488595047] [2020-10-15 03:41:52,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:41:52,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:52,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:41:52,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:41:52,631 INFO L87 Difference]: Start difference. First operand 528 states and 813 transitions. Second operand 8 states. [2020-10-15 03:41:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:41:53,769 INFO L93 Difference]: Finished difference Result 2476 states and 3848 transitions. [2020-10-15 03:41:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:41:53,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-15 03:41:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:41:53,781 INFO L225 Difference]: With dead ends: 2476 [2020-10-15 03:41:53,782 INFO L226 Difference]: Without dead ends: 2043 [2020-10-15 03:41:53,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:41:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2020-10-15 03:41:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 584. [2020-10-15 03:41:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-10-15 03:41:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 893 transitions. [2020-10-15 03:41:53,878 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 893 transitions. Word has length 58 [2020-10-15 03:41:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:41:53,878 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 893 transitions. [2020-10-15 03:41:53,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:41:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 893 transitions. [2020-10-15 03:41:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 03:41:53,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:41:53,889 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] [2020-10-15 03:41:53,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:41:53,890 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:41:53,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:41:53,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1400167672, now seen corresponding path program 1 times [2020-10-15 03:41:53,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:41:53,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092062892] [2020-10-15 03:41:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:41:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:54,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:55,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:58,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:58,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-15 03:41:58,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:41:58,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:41:58,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:58,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:41:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:41:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 03:41:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:41:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:41:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:41:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:41:59,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:41:59,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:41:59,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:41:59,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:41:59,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:41:59,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:41:59,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:41:59,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:41:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:41:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:41:59,172 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 03:41:59,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092062892] [2020-10-15 03:41:59,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:41:59,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:41:59,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875481757] [2020-10-15 03:41:59,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:41:59,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:41:59,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:41:59,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:41:59,174 INFO L87 Difference]: Start difference. First operand 584 states and 893 transitions. Second operand 8 states. [2020-10-15 03:42:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:00,350 INFO L93 Difference]: Finished difference Result 3063 states and 4763 transitions. [2020-10-15 03:42:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:42:00,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-15 03:42:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:00,365 INFO L225 Difference]: With dead ends: 3063 [2020-10-15 03:42:00,366 INFO L226 Difference]: Without dead ends: 2570 [2020-10-15 03:42:00,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:42:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2020-10-15 03:42:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 646. [2020-10-15 03:42:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-15 03:42:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 964 transitions. [2020-10-15 03:42:00,439 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 964 transitions. Word has length 58 [2020-10-15 03:42:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:00,453 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 964 transitions. [2020-10-15 03:42:00,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:42:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 964 transitions. [2020-10-15 03:42:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 03:42:00,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:00,456 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] [2020-10-15 03:42:00,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:42:00,456 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:00,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:00,457 INFO L82 PathProgramCache]: Analyzing trace with hash 849086482, now seen corresponding path program 1 times [2020-10-15 03:42:00,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:00,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931577175] [2020-10-15 03:42:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:00,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:05,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-15 03:42:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:42:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:42:05,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:05,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:42:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:42:05,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:05,795 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:42:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:05,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:05,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:05,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:05,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:42:05,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:05,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:05,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:05,854 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 03:42:05,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931577175] [2020-10-15 03:42:05,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:05,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:42:05,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820085278] [2020-10-15 03:42:05,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:42:05,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:42:05,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:42:05,859 INFO L87 Difference]: Start difference. First operand 646 states and 964 transitions. Second operand 8 states. [2020-10-15 03:42:06,018 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-15 03:42:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:07,216 INFO L93 Difference]: Finished difference Result 2333 states and 3533 transitions. [2020-10-15 03:42:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:42:07,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-15 03:42:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:07,227 INFO L225 Difference]: With dead ends: 2333 [2020-10-15 03:42:07,231 INFO L226 Difference]: Without dead ends: 1804 [2020-10-15 03:42:07,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:42:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-10-15 03:42:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 674. [2020-10-15 03:42:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2020-10-15 03:42:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 980 transitions. [2020-10-15 03:42:07,316 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 980 transitions. Word has length 59 [2020-10-15 03:42:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:07,316 INFO L479 AbstractCegarLoop]: Abstraction has 674 states and 980 transitions. [2020-10-15 03:42:07,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:42:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 980 transitions. [2020-10-15 03:42:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 03:42:07,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:07,318 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] [2020-10-15 03:42:07,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:42:07,318 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:07,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1722610151, now seen corresponding path program 1 times [2020-10-15 03:42:07,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:07,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085781771] [2020-10-15 03:42:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:07,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:07,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:09,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:12,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:12,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 03:42:12,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:42:12,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:42:12,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:12,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:42:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:42:12,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 03:42:12,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:12,650 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-15 03:42:12,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:12,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:12,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:12,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:42:12,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:12,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:12,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:12,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:12,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:12,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:12,685 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 03:42:12,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085781771] [2020-10-15 03:42:12,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:12,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:42:12,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326643257] [2020-10-15 03:42:12,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:42:12,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:12,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:42:12,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:42:12,689 INFO L87 Difference]: Start difference. First operand 674 states and 980 transitions. Second operand 9 states. [2020-10-15 03:42:13,050 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2020-10-15 03:42:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:16,370 INFO L93 Difference]: Finished difference Result 6386 states and 9472 transitions. [2020-10-15 03:42:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-15 03:42:16,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2020-10-15 03:42:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:16,403 INFO L225 Difference]: With dead ends: 6386 [2020-10-15 03:42:16,404 INFO L226 Difference]: Without dead ends: 5929 [2020-10-15 03:42:16,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=279, Invalid=981, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 03:42:16,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2020-10-15 03:42:16,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 664. [2020-10-15 03:42:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-10-15 03:42:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 950 transitions. [2020-10-15 03:42:16,544 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 950 transitions. Word has length 60 [2020-10-15 03:42:16,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:16,544 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 950 transitions. [2020-10-15 03:42:16,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:42:16,545 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 950 transitions. [2020-10-15 03:42:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 03:42:16,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:16,546 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] [2020-10-15 03:42:16,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:42:16,546 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:16,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1644208791, now seen corresponding path program 1 times [2020-10-15 03:42:16,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:16,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226616727] [2020-10-15 03:42:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:16,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:17,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:17,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:17,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:21,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:21,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-15 03:42:21,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-15 03:42:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:42:21,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:21,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:42:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:42:21,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:21,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:21,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:21,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:21,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:21,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:42:21,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:21,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:21,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:21,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:21,801 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 03:42:21,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226616727] [2020-10-15 03:42:21,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:21,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:42:21,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593905185] [2020-10-15 03:42:21,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:42:21,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:21,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:42:21,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:42:21,805 INFO L87 Difference]: Start difference. First operand 664 states and 950 transitions. Second operand 9 states. [2020-10-15 03:42:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:23,628 INFO L93 Difference]: Finished difference Result 3125 states and 4552 transitions. [2020-10-15 03:42:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:42:23,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-15 03:42:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:23,641 INFO L225 Difference]: With dead ends: 3125 [2020-10-15 03:42:23,641 INFO L226 Difference]: Without dead ends: 2608 [2020-10-15 03:42:23,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:42:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2020-10-15 03:42:23,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 668. [2020-10-15 03:42:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-15 03:42:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 954 transitions. [2020-10-15 03:42:23,756 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 954 transitions. Word has length 61 [2020-10-15 03:42:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:23,757 INFO L479 AbstractCegarLoop]: Abstraction has 668 states and 954 transitions. [2020-10-15 03:42:23,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:42:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 954 transitions. [2020-10-15 03:42:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 03:42:23,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:23,758 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] [2020-10-15 03:42:23,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:42:23,759 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:23,759 INFO L82 PathProgramCache]: Analyzing trace with hash -829364041, now seen corresponding path program 1 times [2020-10-15 03:42:23,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:23,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129786487] [2020-10-15 03:42:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:23,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:23,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:26,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:28,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:28,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 03:42:28,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:42:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:42:28,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:28,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:42:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-15 03:42:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:28,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:28,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:42:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:28,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:28,985 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 03:42:28,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129786487] [2020-10-15 03:42:28,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:28,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:42:28,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919474449] [2020-10-15 03:42:28,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:42:28,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:28,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:42:28,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:42:28,987 INFO L87 Difference]: Start difference. First operand 668 states and 954 transitions. Second operand 9 states. [2020-10-15 03:42:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:31,119 INFO L93 Difference]: Finished difference Result 4322 states and 6313 transitions. [2020-10-15 03:42:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:42:31,120 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-15 03:42:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:31,135 INFO L225 Difference]: With dead ends: 4322 [2020-10-15 03:42:31,135 INFO L226 Difference]: Without dead ends: 3841 [2020-10-15 03:42:31,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:42:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2020-10-15 03:42:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 669. [2020-10-15 03:42:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-10-15 03:42:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 955 transitions. [2020-10-15 03:42:31,275 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 955 transitions. Word has length 62 [2020-10-15 03:42:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:31,275 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 955 transitions. [2020-10-15 03:42:31,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:42:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 955 transitions. [2020-10-15 03:42:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 03:42:31,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:31,277 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] [2020-10-15 03:42:31,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:42:31,277 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:31,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:31,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1959685809, now seen corresponding path program 1 times [2020-10-15 03:42:31,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:31,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988486366] [2020-10-15 03:42:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:31,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:31,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:31,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:32,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:36,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:36,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 03:42:36,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:42:36,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:42:36,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:36,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:42:36,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:36,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:42:36,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:36,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:36,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:36,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:42:36,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:36,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:36,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:36,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:36,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:42:36,499 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 03:42:36,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988486366] [2020-10-15 03:42:36,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:36,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:42:36,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817231701] [2020-10-15 03:42:36,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:42:36,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:36,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:42:36,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:42:36,501 INFO L87 Difference]: Start difference. First operand 669 states and 955 transitions. Second operand 9 states. [2020-10-15 03:42:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:38,333 INFO L93 Difference]: Finished difference Result 3158 states and 4585 transitions. [2020-10-15 03:42:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:42:38,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-15 03:42:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:38,343 INFO L225 Difference]: With dead ends: 3158 [2020-10-15 03:42:38,344 INFO L226 Difference]: Without dead ends: 2641 [2020-10-15 03:42:38,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-15 03:42:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2020-10-15 03:42:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 673. [2020-10-15 03:42:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-10-15 03:42:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 959 transitions. [2020-10-15 03:42:38,472 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 959 transitions. Word has length 62 [2020-10-15 03:42:38,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:38,473 INFO L479 AbstractCegarLoop]: Abstraction has 673 states and 959 transitions. [2020-10-15 03:42:38,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:42:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 959 transitions. [2020-10-15 03:42:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 03:42:38,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:38,474 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] [2020-10-15 03:42:38,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:42:38,475 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:38,475 INFO L82 PathProgramCache]: Analyzing trace with hash 199073236, now seen corresponding path program 1 times [2020-10-15 03:42:38,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:38,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309986723] [2020-10-15 03:42:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:38,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:40,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 03:42:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:42:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1635 [2020-10-15 03:42:40,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:40,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:42:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:42:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:42:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:40,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:40,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:40,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:40,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:42:40,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:40,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:40,516 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 03:42:40,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309986723] [2020-10-15 03:42:40,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:40,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:42:40,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349018065] [2020-10-15 03:42:40,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:42:40,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:40,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:42:40,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:42:40,518 INFO L87 Difference]: Start difference. First operand 673 states and 959 transitions. Second operand 10 states. [2020-10-15 03:42:40,669 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-15 03:42:42,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:42,677 INFO L93 Difference]: Finished difference Result 2993 states and 4427 transitions. [2020-10-15 03:42:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:42:42,677 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2020-10-15 03:42:42,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:42,688 INFO L225 Difference]: With dead ends: 2993 [2020-10-15 03:42:42,689 INFO L226 Difference]: Without dead ends: 2404 [2020-10-15 03:42:42,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:42:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2020-10-15 03:42:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 958. [2020-10-15 03:42:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2020-10-15 03:42:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1384 transitions. [2020-10-15 03:42:42,890 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1384 transitions. Word has length 62 [2020-10-15 03:42:42,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:42,890 INFO L479 AbstractCegarLoop]: Abstraction has 958 states and 1384 transitions. [2020-10-15 03:42:42,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:42:42,890 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1384 transitions. [2020-10-15 03:42:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-15 03:42:42,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:42,891 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] [2020-10-15 03:42:42,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:42:42,892 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:42,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:42,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2079810375, now seen corresponding path program 1 times [2020-10-15 03:42:42,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:42,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465996880] [2020-10-15 03:42:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:44,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:44,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 03:42:44,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:42:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1667 [2020-10-15 03:42:44,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:44,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:42:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:42:44,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:42:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:44,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:44,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:44,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:42:44,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:44,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:44,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:44,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:44,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:44,847 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 03:42:44,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465996880] [2020-10-15 03:42:44,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:44,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:42:44,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064806058] [2020-10-15 03:42:44,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:42:44,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:44,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:42:44,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:42:44,850 INFO L87 Difference]: Start difference. First operand 958 states and 1384 transitions. Second operand 10 states. [2020-10-15 03:42:45,002 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-15 03:42:46,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:46,807 INFO L93 Difference]: Finished difference Result 3745 states and 5569 transitions. [2020-10-15 03:42:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:42:46,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-10-15 03:42:46,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:46,816 INFO L225 Difference]: With dead ends: 3745 [2020-10-15 03:42:46,816 INFO L226 Difference]: Without dead ends: 2898 [2020-10-15 03:42:46,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:42:46,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-10-15 03:42:47,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 1571. [2020-10-15 03:42:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2020-10-15 03:42:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2301 transitions. [2020-10-15 03:42:47,160 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2301 transitions. Word has length 63 [2020-10-15 03:42:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:47,161 INFO L479 AbstractCegarLoop]: Abstraction has 1571 states and 2301 transitions. [2020-10-15 03:42:47,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:42:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2301 transitions. [2020-10-15 03:42:47,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:42:47,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:47,163 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 03:42:47,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:42:47,163 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:47,164 INFO L82 PathProgramCache]: Analyzing trace with hash -683451666, now seen corresponding path program 1 times [2020-10-15 03:42:47,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:47,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429365768] [2020-10-15 03:42:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:47,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:47,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:47,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:48,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:48,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:42:48,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:42:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-15 03:42:48,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:48,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:48,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:42:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:42:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:42:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:48,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:48,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:48,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:42:48,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:48,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:42:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:42:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:48,425 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 03:42:48,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429365768] [2020-10-15 03:42:48,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:48,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:42:48,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116514805] [2020-10-15 03:42:48,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:42:48,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:48,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:42:48,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:48,427 INFO L87 Difference]: Start difference. First operand 1571 states and 2301 transitions. Second operand 6 states. [2020-10-15 03:42:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:49,969 INFO L93 Difference]: Finished difference Result 4323 states and 6399 transitions. [2020-10-15 03:42:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:42:49,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:42:49,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:49,975 INFO L225 Difference]: With dead ends: 4323 [2020-10-15 03:42:49,975 INFO L226 Difference]: Without dead ends: 2898 [2020-10-15 03:42:49,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:49,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2020-10-15 03:42:50,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2894. [2020-10-15 03:42:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2894 states. [2020-10-15 03:42:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 4204 transitions. [2020-10-15 03:42:50,573 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 4204 transitions. Word has length 69 [2020-10-15 03:42:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:50,573 INFO L479 AbstractCegarLoop]: Abstraction has 2894 states and 4204 transitions. [2020-10-15 03:42:50,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:42:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 4204 transitions. [2020-10-15 03:42:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:42:50,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:50,577 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 03:42:50,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:42:50,577 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:50,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:50,578 INFO L82 PathProgramCache]: Analyzing trace with hash 79841318, now seen corresponding path program 1 times [2020-10-15 03:42:50,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:50,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517865587] [2020-10-15 03:42:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:50,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:51,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 03:42:51,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:51,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:51,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:51,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:51,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:51,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:42:51,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:51,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:51,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:51,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:51,439 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 03:42:51,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517865587] [2020-10-15 03:42:51,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:51,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:42:51,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271084884] [2020-10-15 03:42:51,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:42:51,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:51,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:42:51,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:51,441 INFO L87 Difference]: Start difference. First operand 2894 states and 4204 transitions. Second operand 6 states. [2020-10-15 03:42:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:52,921 INFO L93 Difference]: Finished difference Result 6654 states and 9827 transitions. [2020-10-15 03:42:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:42:52,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:42:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:52,931 INFO L225 Difference]: With dead ends: 6654 [2020-10-15 03:42:52,931 INFO L226 Difference]: Without dead ends: 4018 [2020-10-15 03:42:52,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:42:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2020-10-15 03:42:53,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 4016. [2020-10-15 03:42:53,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4016 states. [2020-10-15 03:42:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 5870 transitions. [2020-10-15 03:42:53,891 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 5870 transitions. Word has length 70 [2020-10-15 03:42:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:53,891 INFO L479 AbstractCegarLoop]: Abstraction has 4016 states and 5870 transitions. [2020-10-15 03:42:53,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:42:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 5870 transitions. [2020-10-15 03:42:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:42:53,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:53,895 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 03:42:53,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:42:53,895 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:53,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:53,896 INFO L82 PathProgramCache]: Analyzing trace with hash -217559561, now seen corresponding path program 1 times [2020-10-15 03:42:53,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:53,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022560269] [2020-10-15 03:42:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:53,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:54,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:54,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:42:54,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:42:54,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-10-15 03:42:54,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:54,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:42:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:42:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 03:42:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:42:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:54,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:54,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:42:54,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:42:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:42:54,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:54,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:42:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:42:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:42:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:42:54,738 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 03:42:54,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022560269] [2020-10-15 03:42:54,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:42:54,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:42:54,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016499715] [2020-10-15 03:42:54,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:42:54,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:42:54,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:42:54,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:42:54,741 INFO L87 Difference]: Start difference. First operand 4016 states and 5870 transitions. Second operand 6 states. [2020-10-15 03:42:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:42:56,483 INFO L93 Difference]: Finished difference Result 8962 states and 13199 transitions. [2020-10-15 03:42:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:42:56,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-15 03:42:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:42:56,494 INFO L225 Difference]: With dead ends: 8962 [2020-10-15 03:42:56,494 INFO L226 Difference]: Without dead ends: 5576 [2020-10-15 03:42:56,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:42:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2020-10-15 03:42:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5574. [2020-10-15 03:42:57,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5574 states. [2020-10-15 03:42:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 8135 transitions. [2020-10-15 03:42:57,733 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 8135 transitions. Word has length 70 [2020-10-15 03:42:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:42:57,733 INFO L479 AbstractCegarLoop]: Abstraction has 5574 states and 8135 transitions. [2020-10-15 03:42:57,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:42:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 8135 transitions. [2020-10-15 03:42:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:42:57,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:42:57,738 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] [2020-10-15 03:42:57,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:42:57,738 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:42:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:42:57,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1981660057, now seen corresponding path program 1 times [2020-10-15 03:42:57,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:42:57,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472111964] [2020-10-15 03:42:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:42:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:42:57,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:42:59,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:42:59,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:42:59,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:42:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2147 [2020-10-15 03:42:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:42:59,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:42:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:42:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:42:59,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:42:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:00,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:00,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:00,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:43:00,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:00,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:00,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:00,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:00,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:00,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:00,184 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 03:43:00,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472111964] [2020-10-15 03:43:00,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:00,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:43:00,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001899783] [2020-10-15 03:43:00,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:00,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:00,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:00,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:00,186 INFO L87 Difference]: Start difference. First operand 5574 states and 8135 transitions. Second operand 9 states. [2020-10-15 03:43:00,334 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:43:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:04,174 INFO L93 Difference]: Finished difference Result 16073 states and 23598 transitions. [2020-10-15 03:43:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:43:04,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:43:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:04,187 INFO L225 Difference]: With dead ends: 16073 [2020-10-15 03:43:04,187 INFO L226 Difference]: Without dead ends: 10887 [2020-10-15 03:43:04,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:43:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10887 states. [2020-10-15 03:43:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10887 to 5562. [2020-10-15 03:43:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2020-10-15 03:43:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 8113 transitions. [2020-10-15 03:43:05,267 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 8113 transitions. Word has length 71 [2020-10-15 03:43:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:05,267 INFO L479 AbstractCegarLoop]: Abstraction has 5562 states and 8113 transitions. [2020-10-15 03:43:05,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:43:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 8113 transitions. [2020-10-15 03:43:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:43:05,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:05,271 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] [2020-10-15 03:43:05,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:43:05,271 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:05,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1293006721, now seen corresponding path program 1 times [2020-10-15 03:43:05,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:05,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755084025] [2020-10-15 03:43:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:06,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:43:06,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:43:06,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1498 [2020-10-15 03:43:06,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:06,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:43:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 03:43:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:06,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:06,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:06,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:06,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:06,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:43:06,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:06,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:06,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:06,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755084025] [2020-10-15 03:43:06,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:06,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:43:06,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825197302] [2020-10-15 03:43:06,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:06,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:06,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:06,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:06,933 INFO L87 Difference]: Start difference. First operand 5562 states and 8113 transitions. Second operand 6 states. [2020-10-15 03:43:09,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:09,121 INFO L93 Difference]: Finished difference Result 10160 states and 14799 transitions. [2020-10-15 03:43:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:43:09,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:43:09,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:09,131 INFO L225 Difference]: With dead ends: 10160 [2020-10-15 03:43:09,131 INFO L226 Difference]: Without dead ends: 7296 [2020-10-15 03:43:09,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7296 states. [2020-10-15 03:43:10,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7296 to 5741. [2020-10-15 03:43:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5741 states. [2020-10-15 03:43:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 8229 transitions. [2020-10-15 03:43:10,423 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 8229 transitions. Word has length 71 [2020-10-15 03:43:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:10,423 INFO L479 AbstractCegarLoop]: Abstraction has 5741 states and 8229 transitions. [2020-10-15 03:43:10,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 8229 transitions. [2020-10-15 03:43:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:43:10,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:10,427 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] [2020-10-15 03:43:10,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:43:10,427 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:10,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:10,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1895564089, now seen corresponding path program 1 times [2020-10-15 03:43:10,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:10,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159982175] [2020-10-15 03:43:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:10,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:10,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:12,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:12,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:43:12,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:43:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-10-15 03:43:12,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:12,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:43:12,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:12,976 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 25 [2020-10-15 03:43:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:13,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:13,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:13,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:13,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:43:13,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:13,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:13,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:13,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:13,123 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 03:43:13,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159982175] [2020-10-15 03:43:13,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:13,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:43:13,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435229438] [2020-10-15 03:43:13,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:13,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:13,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:13,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:13,125 INFO L87 Difference]: Start difference. First operand 5741 states and 8229 transitions. Second operand 9 states. [2020-10-15 03:43:13,280 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:43:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:17,641 INFO L93 Difference]: Finished difference Result 14253 states and 20453 transitions. [2020-10-15 03:43:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:43:17,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:43:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:17,653 INFO L225 Difference]: With dead ends: 14253 [2020-10-15 03:43:17,653 INFO L226 Difference]: Without dead ends: 12640 [2020-10-15 03:43:17,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:43:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12640 states. [2020-10-15 03:43:18,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12640 to 5741. [2020-10-15 03:43:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5741 states. [2020-10-15 03:43:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 8223 transitions. [2020-10-15 03:43:18,936 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 8223 transitions. Word has length 71 [2020-10-15 03:43:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:18,936 INFO L479 AbstractCegarLoop]: Abstraction has 5741 states and 8223 transitions. [2020-10-15 03:43:18,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:43:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 8223 transitions. [2020-10-15 03:43:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:43:18,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:18,941 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 03:43:18,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:43:18,941 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:18,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:18,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1773468966, now seen corresponding path program 1 times [2020-10-15 03:43:18,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:18,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265848371] [2020-10-15 03:43:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:19,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:19,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:43:19,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:43:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-15 03:43:19,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:19,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:19,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:19,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-15 03:43:19,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 03:43:19,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:19,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:19,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:19,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:19,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:19,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:43:19,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:19,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:43:19,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265848371] [2020-10-15 03:43:19,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:19,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:43:19,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293122691] [2020-10-15 03:43:19,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:43:19,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:43:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:43:19,357 INFO L87 Difference]: Start difference. First operand 5741 states and 8223 transitions. Second operand 4 states. [2020-10-15 03:43:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:22,450 INFO L93 Difference]: Finished difference Result 15675 states and 22583 transitions. [2020-10-15 03:43:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:43:22,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-15 03:43:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:22,460 INFO L225 Difference]: With dead ends: 15675 [2020-10-15 03:43:22,460 INFO L226 Difference]: Without dead ends: 10462 [2020-10-15 03:43:22,465 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 03:43:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10462 states. [2020-10-15 03:43:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10462 to 9827. [2020-10-15 03:43:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9827 states. [2020-10-15 03:43:24,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9827 states to 9827 states and 14109 transitions. [2020-10-15 03:43:24,682 INFO L78 Accepts]: Start accepts. Automaton has 9827 states and 14109 transitions. Word has length 72 [2020-10-15 03:43:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:24,682 INFO L479 AbstractCegarLoop]: Abstraction has 9827 states and 14109 transitions. [2020-10-15 03:43:24,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:43:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 9827 states and 14109 transitions. [2020-10-15 03:43:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:43:24,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:24,686 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 03:43:24,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:43:24,686 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash -321940277, now seen corresponding path program 1 times [2020-10-15 03:43:24,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:24,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480447131] [2020-10-15 03:43:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:24,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:24,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:25,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:43:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:43:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-15 03:43:25,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:25,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 03:43:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:43:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:25,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:25,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:25,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:25,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:25,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:43:25,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:25,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:25,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:25,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:25,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:25,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:25,771 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 03:43:25,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480447131] [2020-10-15 03:43:25,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:25,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 03:43:25,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618900362] [2020-10-15 03:43:25,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 03:43:25,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:25,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 03:43:25,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:43:25,773 INFO L87 Difference]: Start difference. First operand 9827 states and 14109 transitions. Second operand 11 states. [2020-10-15 03:43:25,919 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:43:33,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:33,816 INFO L93 Difference]: Finished difference Result 36807 states and 53025 transitions. [2020-10-15 03:43:33,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:43:33,816 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-10-15 03:43:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:33,843 INFO L225 Difference]: With dead ends: 36807 [2020-10-15 03:43:33,844 INFO L226 Difference]: Without dead ends: 27508 [2020-10-15 03:43:33,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:43:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27508 states. [2020-10-15 03:43:36,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27508 to 10799. [2020-10-15 03:43:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10799 states. [2020-10-15 03:43:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10799 states to 10799 states and 15496 transitions. [2020-10-15 03:43:36,448 INFO L78 Accepts]: Start accepts. Automaton has 10799 states and 15496 transitions. Word has length 73 [2020-10-15 03:43:36,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:36,449 INFO L479 AbstractCegarLoop]: Abstraction has 10799 states and 15496 transitions. [2020-10-15 03:43:36,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 03:43:36,449 INFO L276 IsEmpty]: Start isEmpty. Operand 10799 states and 15496 transitions. [2020-10-15 03:43:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-15 03:43:36,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:36,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:36,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:43:36,452 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:36,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:36,452 INFO L82 PathProgramCache]: Analyzing trace with hash 100932156, now seen corresponding path program 1 times [2020-10-15 03:43:36,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:36,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538830770] [2020-10-15 03:43:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:37,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 03:43:37,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:43:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-10-15 03:43:37,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:37,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:43:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:43:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 03:43:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:37,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:37,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:37,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:37,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:43:37,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:37,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:43:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:43:37,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:37,423 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 03:43:37,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538830770] [2020-10-15 03:43:37,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:37,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:43:37,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594406560] [2020-10-15 03:43:37,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:43:37,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:37,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:43:37,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:43:37,424 INFO L87 Difference]: Start difference. First operand 10799 states and 15496 transitions. Second operand 6 states. [2020-10-15 03:43:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:43:42,812 INFO L93 Difference]: Finished difference Result 28010 states and 40414 transitions. [2020-10-15 03:43:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:43:42,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-15 03:43:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:43:42,835 INFO L225 Difference]: With dead ends: 28010 [2020-10-15 03:43:42,835 INFO L226 Difference]: Without dead ends: 20769 [2020-10-15 03:43:42,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:43:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20769 states. [2020-10-15 03:43:47,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20769 to 20767. [2020-10-15 03:43:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20767 states. [2020-10-15 03:43:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20767 states to 20767 states and 29889 transitions. [2020-10-15 03:43:47,692 INFO L78 Accepts]: Start accepts. Automaton has 20767 states and 29889 transitions. Word has length 74 [2020-10-15 03:43:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:43:47,692 INFO L479 AbstractCegarLoop]: Abstraction has 20767 states and 29889 transitions. [2020-10-15 03:43:47,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:43:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 20767 states and 29889 transitions. [2020-10-15 03:43:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:43:47,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:43:47,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:43:47,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:43:47,696 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:43:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:43:47,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1049877310, now seen corresponding path program 1 times [2020-10-15 03:43:47,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:43:47,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472208030] [2020-10-15 03:43:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:43:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:47,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:47,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:50,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:50,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:43:50,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:43:50,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2311 [2020-10-15 03:43:50,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:50,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:50,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:43:50,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:43:50,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:43:50,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:43:50,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:43:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:43:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:43:50,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:43:50,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:43:50,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:43:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:43:50,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:43:50,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:43:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:43:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:43:50,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:43:50,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:43:50,300 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 03:43:50,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472208030] [2020-10-15 03:43:50,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:43:50,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:43:50,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101495864] [2020-10-15 03:43:50,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:43:50,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:43:50,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:43:50,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:43:50,302 INFO L87 Difference]: Start difference. First operand 20767 states and 29889 transitions. Second operand 9 states. [2020-10-15 03:43:50,456 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-15 03:44:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:04,592 INFO L93 Difference]: Finished difference Result 63457 states and 90998 transitions. [2020-10-15 03:44:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 03:44:04,593 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-15 03:44:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:04,648 INFO L225 Difference]: With dead ends: 63457 [2020-10-15 03:44:04,649 INFO L226 Difference]: Without dead ends: 49562 [2020-10-15 03:44:04,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-15 03:44:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49562 states. [2020-10-15 03:44:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49562 to 20069. [2020-10-15 03:44:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20069 states. [2020-10-15 03:44:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20069 states to 20069 states and 28896 transitions. [2020-10-15 03:44:09,651 INFO L78 Accepts]: Start accepts. Automaton has 20069 states and 28896 transitions. Word has length 75 [2020-10-15 03:44:09,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:09,651 INFO L479 AbstractCegarLoop]: Abstraction has 20069 states and 28896 transitions. [2020-10-15 03:44:09,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:44:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 20069 states and 28896 transitions. [2020-10-15 03:44:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:44:09,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:09,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:09,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:44:09,655 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:09,655 INFO L82 PathProgramCache]: Analyzing trace with hash -997812446, now seen corresponding path program 1 times [2020-10-15 03:44:09,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:09,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862018950] [2020-10-15 03:44:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:09,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:11,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:11,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:44:11,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:44:11,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2133 [2020-10-15 03:44:11,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:11,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:44:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:44:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:44:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:44:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:12,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:12,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:12,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 03:44:12,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:12,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:12,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:12,087 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 03:44:12,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862018950] [2020-10-15 03:44:12,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:12,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:44:12,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527381171] [2020-10-15 03:44:12,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:44:12,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:12,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:44:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:44:12,089 INFO L87 Difference]: Start difference. First operand 20069 states and 28896 transitions. Second operand 10 states. [2020-10-15 03:44:12,241 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-15 03:44:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:28,548 INFO L93 Difference]: Finished difference Result 77799 states and 112174 transitions. [2020-10-15 03:44:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 03:44:28,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-15 03:44:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:28,617 INFO L225 Difference]: With dead ends: 77799 [2020-10-15 03:44:28,617 INFO L226 Difference]: Without dead ends: 58289 [2020-10-15 03:44:28,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:44:28,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58289 states. [2020-10-15 03:44:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58289 to 23593. [2020-10-15 03:44:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23593 states. [2020-10-15 03:44:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23593 states to 23593 states and 33984 transitions. [2020-10-15 03:44:35,792 INFO L78 Accepts]: Start accepts. Automaton has 23593 states and 33984 transitions. Word has length 75 [2020-10-15 03:44:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:35,792 INFO L479 AbstractCegarLoop]: Abstraction has 23593 states and 33984 transitions. [2020-10-15 03:44:35,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:44:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 23593 states and 33984 transitions. [2020-10-15 03:44:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:44:35,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:35,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:35,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:44:35,795 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1835140515, now seen corresponding path program 1 times [2020-10-15 03:44:35,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:35,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043151208] [2020-10-15 03:44:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:35,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:36,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:36,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:44:36,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:44:36,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-15 03:44:36,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:36,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 03:44:36,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:44:36,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:36,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:36,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:36,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:36,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:36,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:44:36,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:36,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:36,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:36,254 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 03:44:36,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043151208] [2020-10-15 03:44:36,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:36,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:44:36,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612855503] [2020-10-15 03:44:36,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:44:36,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:36,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:44:36,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:44:36,255 INFO L87 Difference]: Start difference. First operand 23593 states and 33984 transitions. Second operand 4 states. [2020-10-15 03:44:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:42,301 INFO L93 Difference]: Finished difference Result 31595 states and 45304 transitions. [2020-10-15 03:44:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:44:42,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-15 03:44:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:42,322 INFO L225 Difference]: With dead ends: 31595 [2020-10-15 03:44:42,322 INFO L226 Difference]: Without dead ends: 18551 [2020-10-15 03:44:42,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:44:42,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18551 states. [2020-10-15 03:44:46,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18551 to 17290. [2020-10-15 03:44:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17290 states. [2020-10-15 03:44:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17290 states to 17290 states and 24197 transitions. [2020-10-15 03:44:46,699 INFO L78 Accepts]: Start accepts. Automaton has 17290 states and 24197 transitions. Word has length 75 [2020-10-15 03:44:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:44:46,699 INFO L479 AbstractCegarLoop]: Abstraction has 17290 states and 24197 transitions. [2020-10-15 03:44:46,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:44:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 17290 states and 24197 transitions. [2020-10-15 03:44:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:44:46,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:44:46,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:44:46,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 03:44:46,702 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:44:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:44:46,703 INFO L82 PathProgramCache]: Analyzing trace with hash 426211465, now seen corresponding path program 1 times [2020-10-15 03:44:46,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:44:46,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379039931] [2020-10-15 03:44:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:44:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:46,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:46,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:44:46,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:44:46,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-15 03:44:46,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:46,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:44:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 03:44:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 03:44:46,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:46,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:44:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:44:47,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:44:47,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:44:47,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:44:47,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:44:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:44:47,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:44:47,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:44:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:44:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:44:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:44:47,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:44:47,014 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 03:44:47,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379039931] [2020-10-15 03:44:47,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:44:47,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:44:47,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386557129] [2020-10-15 03:44:47,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:44:47,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:44:47,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:44:47,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:44:47,016 INFO L87 Difference]: Start difference. First operand 17290 states and 24197 transitions. Second operand 4 states. [2020-10-15 03:44:56,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:44:56,685 INFO L93 Difference]: Finished difference Result 48629 states and 67594 transitions. [2020-10-15 03:44:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:44:56,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-15 03:44:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:44:56,720 INFO L225 Difference]: With dead ends: 48629 [2020-10-15 03:44:56,721 INFO L226 Difference]: Without dead ends: 31884 [2020-10-15 03:44:56,737 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 03:44:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31884 states. [2020-10-15 03:45:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31884 to 29208. [2020-10-15 03:45:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29208 states. [2020-10-15 03:45:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29208 states to 29208 states and 40314 transitions. [2020-10-15 03:45:04,366 INFO L78 Accepts]: Start accepts. Automaton has 29208 states and 40314 transitions. Word has length 75 [2020-10-15 03:45:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:45:04,367 INFO L479 AbstractCegarLoop]: Abstraction has 29208 states and 40314 transitions. [2020-10-15 03:45:04,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:45:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 29208 states and 40314 transitions. [2020-10-15 03:45:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:45:04,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:45:04,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:45:04,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 03:45:04,369 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:45:04,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:45:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash -415720139, now seen corresponding path program 1 times [2020-10-15 03:45:04,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:45:04,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640982238] [2020-10-15 03:45:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:45:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:04,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:04,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:45:04,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-15 03:45:04,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:04,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:45:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-15 03:45:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 03:45:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:45:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:45:04,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:45:04,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:45:04,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:45:04,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:45:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:45:04,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:45:04,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:45:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:45:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:45:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:45:04,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:45:04,625 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 03:45:04,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640982238] [2020-10-15 03:45:04,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:45:04,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:45:04,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094915646] [2020-10-15 03:45:04,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:45:04,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:45:04,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:45:04,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:45:04,627 INFO L87 Difference]: Start difference. First operand 29208 states and 40314 transitions. Second operand 6 states.