/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:48:45,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:48:45,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:48:45,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:48:45,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:48:45,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:48:45,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:48:45,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:48:45,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:48:45,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:48:45,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:48:45,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:48:45,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:48:45,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:48:45,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:48:45,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:48:45,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:48:45,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:48:45,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:48:45,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:48:45,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:48:45,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:48:45,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:48:45,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:48:45,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:48:45,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:48:45,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:48:45,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:48:45,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:48:45,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:48:45,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:48:45,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:48:45,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:48:45,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:48:45,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:48:45,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:48:45,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:48:45,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:48:45,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:48:45,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:48:45,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:48:45,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:48:45,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:48:45,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:48:45,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:48:45,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:48:45,162 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:48:45,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:48:45,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:48:45,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:48:45,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:48:45,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:48:45,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:48:45,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:48:45,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:48:45,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:48:45,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:48:45,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:48:45,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:48:45,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:48:45,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:48:45,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:48:45,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:48:45,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:48:45,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:48:45,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:48:45,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:48:45,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:48:45,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:48:45,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:48:45,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:48:45,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:48:45,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:48:45,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:48:45,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:48:45,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:48:45,492 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:48:45,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-12 19:48:45,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0d9abe10/6d41043e359e4932be456d727cb0f71e/FLAG09b5ed76a [2020-10-12 19:48:46,004 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:48:46,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-12 19:48:46,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0d9abe10/6d41043e359e4932be456d727cb0f71e/FLAG09b5ed76a [2020-10-12 19:48:46,370 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0d9abe10/6d41043e359e4932be456d727cb0f71e [2020-10-12 19:48:46,378 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:48:46,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:48:46,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:48:46,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:48:46,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:48:46,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:48:46" (1/1) ... [2020-10-12 19:48:46,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e093328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:46, skipping insertion in model container [2020-10-12 19:48:46,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:48:46" (1/1) ... [2020-10-12 19:48:46,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:48:46,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:48:46,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:48:46,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:48:47,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:48:47,290 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:48:47,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47 WrapperNode [2020-10-12 19:48:47,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:48:47,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:48:47,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:48:47,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:48:47,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (1/1) ... [2020-10-12 19:48:47,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (1/1) ... [2020-10-12 19:48:47,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (1/1) ... [2020-10-12 19:48:47,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (1/1) ... [2020-10-12 19:48:47,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (1/1) ... [2020-10-12 19:48:47,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (1/1) ... [2020-10-12 19:48:47,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (1/1) ... [2020-10-12 19:48:47,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:48:47,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:48:47,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:48:47,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:48:47,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:48:47,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:48:47,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:48:47,450 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:48:47,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:48:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:48:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:48:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:48:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:48:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:48:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:48:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:48:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:48:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:48:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:48:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:48:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:48:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:48:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:48:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-12 19:48:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:48:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:48:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:48:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:48:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:48:48,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:48:48,364 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:48:48,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:48:48 BoogieIcfgContainer [2020-10-12 19:48:48,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:48:48,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:48:48,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:48:48,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:48:48,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:48:46" (1/3) ... [2020-10-12 19:48:48,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a5663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:48:48, skipping insertion in model container [2020-10-12 19:48:48,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:48:47" (2/3) ... [2020-10-12 19:48:48,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a5663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:48:48, skipping insertion in model container [2020-10-12 19:48:48,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:48:48" (3/3) ... [2020-10-12 19:48:48,377 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-12 19:48:48,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:48:48,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:48:48,409 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:48:48,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:48:48,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:48:48,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:48:48,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:48:48,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:48:48,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:48:48,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:48:48,437 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:48:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-12 19:48:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:48:48,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:48:48,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:48:48,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:48:48,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:48:48,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1581776616, now seen corresponding path program 1 times [2020-10-12 19:48:48,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:48:48,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775156450] [2020-10-12 19:48:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:48:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:49,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:50,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:53,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:53,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:48:53,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:48:53,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:48:53,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:53,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:48:53,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:48:53,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 19:48:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:48:54,359 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:48:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:48:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:54,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:54,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:48:54,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:48:54,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 19:48:54,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:48:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:48:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:48:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:48:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:48:54,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775156450] [2020-10-12 19:48:54,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:48:54,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:48:54,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620480408] [2020-10-12 19:48:54,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:48:54,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:48:54,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:48:54,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:48:54,526 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 10 states. [2020-10-12 19:48:54,935 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-12 19:48:57,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:48:57,527 INFO L93 Difference]: Finished difference Result 1478 states and 2361 transitions. [2020-10-12 19:48:57,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:48:57,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2020-10-12 19:48:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:48:57,555 INFO L225 Difference]: With dead ends: 1478 [2020-10-12 19:48:57,556 INFO L226 Difference]: Without dead ends: 1337 [2020-10-12 19:48:57,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:48:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-12 19:48:57,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 308. [2020-10-12 19:48:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-12 19:48:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 441 transitions. [2020-10-12 19:48:57,655 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 441 transitions. Word has length 112 [2020-10-12 19:48:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:48:57,656 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 441 transitions. [2020-10-12 19:48:57,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:48:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 441 transitions. [2020-10-12 19:48:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:48:57,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:48:57,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:48:57,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:48:57,660 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:48:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:48:57,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1235271490, now seen corresponding path program 1 times [2020-10-12 19:48:57,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:48:57,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864985389] [2020-10-12 19:48:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:48:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:57,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:57,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:58,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:00,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:01,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:01,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:02,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:02,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:49:02,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:49:02,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:49:02,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:49:02,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 19:49:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:49:03,060 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:49:03,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:03,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:03,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:03,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:49:03,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:03,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864985389] [2020-10-12 19:49:03,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:03,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:03,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614694557] [2020-10-12 19:49:03,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:03,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:03,126 INFO L87 Difference]: Start difference. First operand 308 states and 441 transitions. Second operand 10 states. [2020-10-12 19:49:03,437 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:49:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:05,360 INFO L93 Difference]: Finished difference Result 1945 states and 3017 transitions. [2020-10-12 19:49:05,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:05,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 19:49:05,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:05,378 INFO L225 Difference]: With dead ends: 1945 [2020-10-12 19:49:05,378 INFO L226 Difference]: Without dead ends: 1785 [2020-10-12 19:49:05,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2020-10-12 19:49:05,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 562. [2020-10-12 19:49:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-12 19:49:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 843 transitions. [2020-10-12 19:49:05,453 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 843 transitions. Word has length 114 [2020-10-12 19:49:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:05,454 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 843 transitions. [2020-10-12 19:49:05,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:05,454 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 843 transitions. [2020-10-12 19:49:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:49:05,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:05,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:05,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:49:05,458 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:05,458 INFO L82 PathProgramCache]: Analyzing trace with hash -772514959, now seen corresponding path program 1 times [2020-10-12 19:49:05,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:05,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810927364] [2020-10-12 19:49:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:05,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:05,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:05,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:05,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:06,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:06,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:06,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:07,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:07,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:08,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:08,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:10,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:10,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:49:10,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:49:10,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:49:10,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:10,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:49:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:49:10,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:49:10,875 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:49:10,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:10,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:10,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:10,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:10,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:49:10,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:10,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:10,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:10,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810927364] [2020-10-12 19:49:10,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:10,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:10,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309899075] [2020-10-12 19:49:10,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:10,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:10,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:10,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:10,947 INFO L87 Difference]: Start difference. First operand 562 states and 843 transitions. Second operand 10 states. [2020-10-12 19:49:11,240 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:49:12,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:12,802 INFO L93 Difference]: Finished difference Result 2376 states and 3690 transitions. [2020-10-12 19:49:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:12,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 19:49:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:12,814 INFO L225 Difference]: With dead ends: 2376 [2020-10-12 19:49:12,814 INFO L226 Difference]: Without dead ends: 2141 [2020-10-12 19:49:12,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-10-12 19:49:12,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 810. [2020-10-12 19:49:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-12 19:49:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1236 transitions. [2020-10-12 19:49:12,913 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1236 transitions. Word has length 114 [2020-10-12 19:49:12,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:12,914 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 1236 transitions. [2020-10-12 19:49:12,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:12,914 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1236 transitions. [2020-10-12 19:49:12,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:49:12,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:12,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:12,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:49:12,917 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:12,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:12,918 INFO L82 PathProgramCache]: Analyzing trace with hash 571290459, now seen corresponding path program 1 times [2020-10-12 19:49:12,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:12,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378330046] [2020-10-12 19:49:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:14,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:15,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:15,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:17,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:17,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:49:17,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:49:17,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:49:17,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:49:17,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:49:17,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:18,367 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:49:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:18,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:18,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:18,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:49:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:18,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:49:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:18,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378330046] [2020-10-12 19:49:18,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:18,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:18,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323007155] [2020-10-12 19:49:18,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:18,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:18,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:18,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:18,471 INFO L87 Difference]: Start difference. First operand 810 states and 1236 transitions. Second operand 10 states. [2020-10-12 19:49:18,860 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:49:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:20,277 INFO L93 Difference]: Finished difference Result 2554 states and 3970 transitions. [2020-10-12 19:49:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:20,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 19:49:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:20,290 INFO L225 Difference]: With dead ends: 2554 [2020-10-12 19:49:20,290 INFO L226 Difference]: Without dead ends: 2319 [2020-10-12 19:49:20,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-12 19:49:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 969. [2020-10-12 19:49:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-12 19:49:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1488 transitions. [2020-10-12 19:49:20,412 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1488 transitions. Word has length 114 [2020-10-12 19:49:20,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:20,413 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1488 transitions. [2020-10-12 19:49:20,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1488 transitions. [2020-10-12 19:49:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:49:20,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:20,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:20,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:49:20,415 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1627098138, now seen corresponding path program 1 times [2020-10-12 19:49:20,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:20,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888631041] [2020-10-12 19:49:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:25,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:25,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:49:25,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:49:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:49:25,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:49:25,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:49:25,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:25,831 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:49:25,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:25,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:25,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:25,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:25,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:49:25,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:25,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:25,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:25,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:25,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:25,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888631041] [2020-10-12 19:49:25,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:25,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:25,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943795693] [2020-10-12 19:49:25,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:25,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:25,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:25,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:25,909 INFO L87 Difference]: Start difference. First operand 969 states and 1488 transitions. Second operand 10 states. [2020-10-12 19:49:26,271 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-12 19:49:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:27,833 INFO L93 Difference]: Finished difference Result 3230 states and 5046 transitions. [2020-10-12 19:49:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:27,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-12 19:49:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:27,845 INFO L225 Difference]: With dead ends: 3230 [2020-10-12 19:49:27,845 INFO L226 Difference]: Without dead ends: 2442 [2020-10-12 19:49:27,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-10-12 19:49:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 969. [2020-10-12 19:49:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-12 19:49:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1483 transitions. [2020-10-12 19:49:27,943 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1483 transitions. Word has length 114 [2020-10-12 19:49:27,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:27,943 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1483 transitions. [2020-10-12 19:49:27,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1483 transitions. [2020-10-12 19:49:27,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:49:27,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:27,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:27,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:49:27,946 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:27,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:27,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1385880411, now seen corresponding path program 1 times [2020-10-12 19:49:27,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:27,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086880469] [2020-10-12 19:49:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:28,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:29,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:29,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:29,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:30,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:32,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:32,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:49:32,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:49:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:49:32,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:49:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:49:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:49:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:33,216 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:49:33,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:33,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:33,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:33,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:49:33,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:33,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086880469] [2020-10-12 19:49:33,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:33,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:49:33,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639748799] [2020-10-12 19:49:33,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:49:33,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:33,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:49:33,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:49:33,260 INFO L87 Difference]: Start difference. First operand 969 states and 1483 transitions. Second operand 7 states. [2020-10-12 19:49:33,500 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:49:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:35,360 INFO L93 Difference]: Finished difference Result 7670 states and 12024 transitions. [2020-10-12 19:49:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:49:35,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 19:49:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:35,386 INFO L225 Difference]: With dead ends: 7670 [2020-10-12 19:49:35,386 INFO L226 Difference]: Without dead ends: 6770 [2020-10-12 19:49:35,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:49:35,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2020-10-12 19:49:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 2706. [2020-10-12 19:49:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2706 states. [2020-10-12 19:49:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4198 transitions. [2020-10-12 19:49:35,680 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4198 transitions. Word has length 114 [2020-10-12 19:49:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:35,681 INFO L479 AbstractCegarLoop]: Abstraction has 2706 states and 4198 transitions. [2020-10-12 19:49:35,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:49:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4198 transitions. [2020-10-12 19:49:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:49:35,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:35,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:35,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:49:35,684 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:35,685 INFO L82 PathProgramCache]: Analyzing trace with hash -781699375, now seen corresponding path program 1 times [2020-10-12 19:49:35,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:35,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686595226] [2020-10-12 19:49:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:40,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:40,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:49:40,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:49:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:49:40,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:49:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:49:40,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:49:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:40,945 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:49:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:40,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:40,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:40,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:49:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:40,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686595226] [2020-10-12 19:49:40,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:40,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:49:40,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258652147] [2020-10-12 19:49:40,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:49:40,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:40,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:49:40,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:49:40,981 INFO L87 Difference]: Start difference. First operand 2706 states and 4198 transitions. Second operand 7 states. [2020-10-12 19:49:41,249 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:49:44,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:44,119 INFO L93 Difference]: Finished difference Result 18956 states and 29675 transitions. [2020-10-12 19:49:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:49:44,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-12 19:49:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:44,175 INFO L225 Difference]: With dead ends: 18956 [2020-10-12 19:49:44,175 INFO L226 Difference]: Without dead ends: 16456 [2020-10-12 19:49:44,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:49:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16456 states. [2020-10-12 19:49:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16456 to 7738. [2020-10-12 19:49:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7738 states. [2020-10-12 19:49:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 12039 transitions. [2020-10-12 19:49:44,865 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 12039 transitions. Word has length 115 [2020-10-12 19:49:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:44,866 INFO L479 AbstractCegarLoop]: Abstraction has 7738 states and 12039 transitions. [2020-10-12 19:49:44,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:49:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 12039 transitions. [2020-10-12 19:49:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:49:44,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:44,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:44,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:49:44,871 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:44,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1191463456, now seen corresponding path program 1 times [2020-10-12 19:49:44,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:44,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438143103] [2020-10-12 19:49:44,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:44,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:46,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:46,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:49,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:49,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:49:49,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:49:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:49:49,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:49:49,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 19:49:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:49:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:50,148 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:49:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:50,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:49:50,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:50,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438143103] [2020-10-12 19:49:50,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:50,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:49:50,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952915074] [2020-10-12 19:49:50,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:49:50,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:50,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:49:50,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:49:50,178 INFO L87 Difference]: Start difference. First operand 7738 states and 12039 transitions. Second operand 7 states. [2020-10-12 19:49:50,407 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:49:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:54,993 INFO L93 Difference]: Finished difference Result 49130 states and 76768 transitions. [2020-10-12 19:49:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:49:54,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-12 19:49:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:55,103 INFO L225 Difference]: With dead ends: 49130 [2020-10-12 19:49:55,104 INFO L226 Difference]: Without dead ends: 41778 [2020-10-12 19:49:55,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:49:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41778 states. [2020-10-12 19:49:56,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41778 to 14876. [2020-10-12 19:49:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14876 states. [2020-10-12 19:49:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 23069 transitions. [2020-10-12 19:49:56,581 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 23069 transitions. Word has length 115 [2020-10-12 19:49:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:56,581 INFO L479 AbstractCegarLoop]: Abstraction has 14876 states and 23069 transitions. [2020-10-12 19:49:56,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:49:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 23069 transitions. [2020-10-12 19:49:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:49:56,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:56,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:56,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:49:56,590 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:56,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:56,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1073365418, now seen corresponding path program 1 times [2020-10-12 19:49:56,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:56,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882226368] [2020-10-12 19:49:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:56,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:56,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:01,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:01,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:50:01,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:50:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:50:01,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:50:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:50:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:50:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:01,864 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:50:01,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:01,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:01,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:01,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:50:01,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:01,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882226368] [2020-10-12 19:50:01,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:01,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:50:01,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968820077] [2020-10-12 19:50:01,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:50:01,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:01,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:50:01,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:50:01,896 INFO L87 Difference]: Start difference. First operand 14876 states and 23069 transitions. Second operand 7 states. [2020-10-12 19:50:02,143 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:50:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:09,530 INFO L93 Difference]: Finished difference Result 81080 states and 125822 transitions. [2020-10-12 19:50:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:50:09,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-12 19:50:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:09,726 INFO L225 Difference]: With dead ends: 81080 [2020-10-12 19:50:09,726 INFO L226 Difference]: Without dead ends: 74562 [2020-10-12 19:50:09,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:50:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74562 states. [2020-10-12 19:50:12,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74562 to 19838. [2020-10-12 19:50:12,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19838 states. [2020-10-12 19:50:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19838 states to 19838 states and 30579 transitions. [2020-10-12 19:50:12,080 INFO L78 Accepts]: Start accepts. Automaton has 19838 states and 30579 transitions. Word has length 116 [2020-10-12 19:50:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:12,080 INFO L479 AbstractCegarLoop]: Abstraction has 19838 states and 30579 transitions. [2020-10-12 19:50:12,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:50:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 19838 states and 30579 transitions. [2020-10-12 19:50:12,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:50:12,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:12,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:12,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:50:12,092 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:12,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:12,092 INFO L82 PathProgramCache]: Analyzing trace with hash 781239404, now seen corresponding path program 1 times [2020-10-12 19:50:12,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:12,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880138941] [2020-10-12 19:50:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:17,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:17,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:50:17,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:50:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:50:17,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:50:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:50:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:50:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:17,370 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:50:17,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:17,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:17,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:17,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:50:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:17,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:17,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880138941] [2020-10-12 19:50:17,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:17,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:50:17,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333867452] [2020-10-12 19:50:17,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:50:17,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:17,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:50:17,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:50:17,401 INFO L87 Difference]: Start difference. First operand 19838 states and 30579 transitions. Second operand 7 states. [2020-10-12 19:50:17,661 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:50:25,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:25,337 INFO L93 Difference]: Finished difference Result 73783 states and 113901 transitions. [2020-10-12 19:50:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:50:25,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-12 19:50:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:25,469 INFO L225 Difference]: With dead ends: 73783 [2020-10-12 19:50:25,469 INFO L226 Difference]: Without dead ends: 61355 [2020-10-12 19:50:25,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:50:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61355 states. [2020-10-12 19:50:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61355 to 19783. [2020-10-12 19:50:27,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19783 states. [2020-10-12 19:50:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19783 states to 19783 states and 30496 transitions. [2020-10-12 19:50:27,612 INFO L78 Accepts]: Start accepts. Automaton has 19783 states and 30496 transitions. Word has length 116 [2020-10-12 19:50:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:27,612 INFO L479 AbstractCegarLoop]: Abstraction has 19783 states and 30496 transitions. [2020-10-12 19:50:27,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:50:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 19783 states and 30496 transitions. [2020-10-12 19:50:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:50:27,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:27,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:27,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:50:27,620 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:27,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:27,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2111871035, now seen corresponding path program 1 times [2020-10-12 19:50:27,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:27,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014492115] [2020-10-12 19:50:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:27,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:28,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:32,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:32,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:50:32,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:50:32,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:50:32,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:32,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:50:32,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:50:32,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:50:32,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:32,896 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:50:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:32,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:32,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:32,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:32,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:50:32,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:32,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:32,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:32,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:32,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014492115] [2020-10-12 19:50:32,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:32,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:50:32,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492007624] [2020-10-12 19:50:32,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:50:32,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:32,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:50:32,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:50:32,943 INFO L87 Difference]: Start difference. First operand 19783 states and 30496 transitions. Second operand 7 states. [2020-10-12 19:50:33,202 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:50:42,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:42,964 INFO L93 Difference]: Finished difference Result 90995 states and 140716 transitions. [2020-10-12 19:50:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:50:42,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-12 19:50:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:43,080 INFO L225 Difference]: With dead ends: 90995 [2020-10-12 19:50:43,080 INFO L226 Difference]: Without dead ends: 78373 [2020-10-12 19:50:43,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:50:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78373 states. [2020-10-12 19:50:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78373 to 26171. [2020-10-12 19:50:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26171 states. [2020-10-12 19:50:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26171 states to 26171 states and 40376 transitions. [2020-10-12 19:50:46,221 INFO L78 Accepts]: Start accepts. Automaton has 26171 states and 40376 transitions. Word has length 116 [2020-10-12 19:50:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:46,221 INFO L479 AbstractCegarLoop]: Abstraction has 26171 states and 40376 transitions. [2020-10-12 19:50:46,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:50:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 26171 states and 40376 transitions. [2020-10-12 19:50:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:50:46,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:46,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:46,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:50:46,230 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:46,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1886601056, now seen corresponding path program 1 times [2020-10-12 19:50:46,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:46,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662280086] [2020-10-12 19:50:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:46,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:47,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:49,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:49,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:49,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:50,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:51,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:51,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:50:51,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:50:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:50:51,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:51,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:50:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:50:51,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:50:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:50:52,068 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:50:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:52,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:52,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:52,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:52,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:52,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:50:52,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:52,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:52,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:52,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662280086] [2020-10-12 19:50:52,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:52,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:50:52,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473302663] [2020-10-12 19:50:52,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:50:52,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:52,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:50:52,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:50:52,161 INFO L87 Difference]: Start difference. First operand 26171 states and 40376 transitions. Second operand 11 states. [2020-10-12 19:50:52,575 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-12 19:51:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:51:44,201 INFO L93 Difference]: Finished difference Result 381057 states and 589934 transitions. [2020-10-12 19:51:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:51:44,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 117 [2020-10-12 19:51:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:51:44,731 INFO L225 Difference]: With dead ends: 381057 [2020-10-12 19:51:44,731 INFO L226 Difference]: Without dead ends: 355358 [2020-10-12 19:51:44,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:51:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355358 states. [2020-10-12 19:51:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355358 to 38560. [2020-10-12 19:51:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38560 states. [2020-10-12 19:51:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38560 states to 38560 states and 59530 transitions. [2020-10-12 19:51:55,862 INFO L78 Accepts]: Start accepts. Automaton has 38560 states and 59530 transitions. Word has length 117 [2020-10-12 19:51:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:51:55,863 INFO L479 AbstractCegarLoop]: Abstraction has 38560 states and 59530 transitions. [2020-10-12 19:51:55,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:51:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 38560 states and 59530 transitions. [2020-10-12 19:51:55,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 19:51:55,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:51:55,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:51:55,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:51:55,871 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:51:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:51:55,871 INFO L82 PathProgramCache]: Analyzing trace with hash -839776028, now seen corresponding path program 1 times [2020-10-12 19:51:55,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:51:55,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081547655] [2020-10-12 19:51:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:51:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:55,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:56,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:56,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:56,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:56,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:00,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:00,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 19:52:00,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:52:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:52:00,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:52:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:52:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:52:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:01,156 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:52:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:52:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:01,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:01,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:52:01,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:52:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:52:01,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:52:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:52:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:52:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:52:01,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081547655] [2020-10-12 19:52:01,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:52:01,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:52:01,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860132374] [2020-10-12 19:52:01,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:52:01,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:52:01,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:52:01,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:52:01,202 INFO L87 Difference]: Start difference. First operand 38560 states and 59530 transitions. Second operand 7 states. [2020-10-12 19:52:01,458 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 19:52:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:52:24,160 INFO L93 Difference]: Finished difference Result 130900 states and 202406 transitions. [2020-10-12 19:52:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:52:24,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-12 19:52:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:52:24,285 INFO L225 Difference]: With dead ends: 130900 [2020-10-12 19:52:24,286 INFO L226 Difference]: Without dead ends: 118357 [2020-10-12 19:52:24,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:52:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118357 states. [2020-10-12 19:52:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118357 to 44853. [2020-10-12 19:52:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44853 states. [2020-10-12 19:52:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44853 states to 44853 states and 69263 transitions. [2020-10-12 19:52:33,363 INFO L78 Accepts]: Start accepts. Automaton has 44853 states and 69263 transitions. Word has length 118 [2020-10-12 19:52:33,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:52:33,363 INFO L479 AbstractCegarLoop]: Abstraction has 44853 states and 69263 transitions. [2020-10-12 19:52:33,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:52:33,363 INFO L276 IsEmpty]: Start isEmpty. Operand 44853 states and 69263 transitions. [2020-10-12 19:52:33,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 19:52:33,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:52:33,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:52:33,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:52:33,372 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:52:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:52:33,373 INFO L82 PathProgramCache]: Analyzing trace with hash 59073755, now seen corresponding path program 1 times [2020-10-12 19:52:33,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:52:33,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747571977] [2020-10-12 19:52:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:52:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:33,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:33,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:33,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:33,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:34,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:36,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:38,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:38,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 19:52:38,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:52:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:52:38,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:52:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:52:38,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 19:52:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:38,732 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2020-10-12 19:52:39,201 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-12 19:52:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:52:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:39,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:52:39,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:52:39,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:52:39,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:52:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:52:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:52:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:52:39,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747571977] [2020-10-12 19:52:39,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:52:39,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:52:39,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320757100] [2020-10-12 19:52:39,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:52:39,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:52:39,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:52:39,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:52:39,261 INFO L87 Difference]: Start difference. First operand 44853 states and 69263 transitions. Second operand 12 states. [2020-10-12 19:52:39,663 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 214