/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/array-examples/standard_partition_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:02:42,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:02:42,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:02:42,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:02:42,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:02:42,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:02:42,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:02:42,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:02:42,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:02:42,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:02:42,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:02:42,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:02:42,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:02:42,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:02:42,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:02:42,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:02:42,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:02:42,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:02:42,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:02:42,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:02:42,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:02:42,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:02:42,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:02:42,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:02:42,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:02:42,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:02:42,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:02:42,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:02:42,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:02:42,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:02:42,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:02:42,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:02:42,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:02:42,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:02:42,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:02:42,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:02:42,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:02:42,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:02:42,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:02:42,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:02:42,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:02:42,554 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 10:02:42,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:02:42,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:02:42,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:02:42,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:02:42,600 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:02:42,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:02:42,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:02:42,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:02:42,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:02:42,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:02:42,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:02:42,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:02:42,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:02:42,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:02:42,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:02:42,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:02:42,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:02:42,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:02:42,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:02:42,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:02:42,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:02:42,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:02:42,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:02:42,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:02:42,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:02:42,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:02:42,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:02:42,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:02:42,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:02:42,607 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 10:02:42,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:02:42,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:02:42,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:02:42,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:02:42,935 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:02:42,936 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2020-10-12 10:02:43,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9884d4826/2404f53f4c774a63b28f4ebad8b2fcc8/FLAG0b94ca340 [2020-10-12 10:02:43,398 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:02:43,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2020-10-12 10:02:43,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9884d4826/2404f53f4c774a63b28f4ebad8b2fcc8/FLAG0b94ca340 [2020-10-12 10:02:43,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9884d4826/2404f53f4c774a63b28f4ebad8b2fcc8 [2020-10-12 10:02:43,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:02:43,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:02:43,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:02:43,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:02:43,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:02:43,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:02:43" (1/1) ... [2020-10-12 10:02:43,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f931735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:43, skipping insertion in model container [2020-10-12 10:02:43,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:02:43" (1/1) ... [2020-10-12 10:02:43,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:02:43,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:02:44,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:02:44,056 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:02:44,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:02:44,096 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:02:44,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44 WrapperNode [2020-10-12 10:02:44,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:02:44,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:02:44,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:02:44,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:02:44,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (1/1) ... [2020-10-12 10:02:44,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (1/1) ... [2020-10-12 10:02:44,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (1/1) ... [2020-10-12 10:02:44,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (1/1) ... [2020-10-12 10:02:44,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (1/1) ... [2020-10-12 10:02:44,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (1/1) ... [2020-10-12 10:02:44,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (1/1) ... [2020-10-12 10:02:44,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:02:44,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:02:44,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:02:44,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:02:44,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (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 10:02:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:02:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:02:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:02:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:02:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:02:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:02:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:02:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:02:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:02:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:02:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:02:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:02:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:02:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:02:44,687 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:02:44,687 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-12 10:02:44,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:02:44 BoogieIcfgContainer [2020-10-12 10:02:44,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:02:44,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:02:44,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:02:44,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:02:44,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:02:43" (1/3) ... [2020-10-12 10:02:44,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f0d622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:02:44, skipping insertion in model container [2020-10-12 10:02:44,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:02:44" (2/3) ... [2020-10-12 10:02:44,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f0d622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:02:44, skipping insertion in model container [2020-10-12 10:02:44,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:02:44" (3/3) ... [2020-10-12 10:02:44,704 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2020-10-12 10:02:44,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:02:44,726 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:02:44,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:02:44,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:02:44,816 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:02:44,816 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:02:44,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:02:44,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:02:44,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:02:44,817 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:02:44,817 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:02:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-12 10:02:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 10:02:44,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:02:44,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:02:44,848 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:02:44,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:02:44,856 INFO L82 PathProgramCache]: Analyzing trace with hash -825680561, now seen corresponding path program 1 times [2020-10-12 10:02:44,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:02:44,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095537086] [2020-10-12 10:02:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:02:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:45,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:45,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 10:02:45,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:02:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-12 10:02:45,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:02:45,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:02:45,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:02:45,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 10:02:45,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:02:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:45,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:45,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:02:45,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:02:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:02:45,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:02:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:02:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:02:45,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:02:45,554 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 10:02:45,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095537086] [2020-10-12 10:02:45,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:02:45,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:02:45,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024800659] [2020-10-12 10:02:45,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:02:45,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:02:45,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:02:45,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:02:45,583 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-10-12 10:02:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:02:45,729 INFO L93 Difference]: Finished difference Result 76 states and 109 transitions. [2020-10-12 10:02:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:02:45,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-12 10:02:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:02:45,742 INFO L225 Difference]: With dead ends: 76 [2020-10-12 10:02:45,742 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 10:02:45,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:02:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 10:02:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-12 10:02:45,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 10:02:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-12 10:02:45,799 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 15 [2020-10-12 10:02:45,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:02:45,799 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-12 10:02:45,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:02:45,800 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2020-10-12 10:02:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 10:02:45,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:02:45,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:02:45,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:02:45,802 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:02:45,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:02:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash 947936744, now seen corresponding path program 1 times [2020-10-12 10:02:45,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:02:45,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592486679] [2020-10-12 10:02:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:02:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:45,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:46,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:46,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 10:02:46,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:02:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-12 10:02:46,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:02:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:02:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:02:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:02:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:02:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:46,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:02:46,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:02:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:02:46,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:02:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:02:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:02:46,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:02:46,138 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 10:02:46,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592486679] [2020-10-12 10:02:46,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:02:46,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:02:46,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098226713] [2020-10-12 10:02:46,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:02:46,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:02:46,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:02:46,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:02:46,142 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand 5 states. [2020-10-12 10:02:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:02:46,246 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2020-10-12 10:02:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:02:46,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-12 10:02:46,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:02:46,249 INFO L225 Difference]: With dead ends: 63 [2020-10-12 10:02:46,249 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 10:02:46,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:02:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 10:02:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-12 10:02:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 10:02:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2020-10-12 10:02:46,264 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 17 [2020-10-12 10:02:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:02:46,264 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2020-10-12 10:02:46,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:02:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2020-10-12 10:02:46,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 10:02:46,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:02:46,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:02:46,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:02:46,268 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:02:46,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:02:46,269 INFO L82 PathProgramCache]: Analyzing trace with hash -309319642, now seen corresponding path program 1 times [2020-10-12 10:02:46,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:02:46,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823558390] [2020-10-12 10:02:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:02:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:46,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:46,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:46,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:46,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 10:02:46,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:02:46,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-12 10:02:46,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:46,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:02:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:02:46,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:02:46,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:02:46,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:02:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:46,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:46,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:02:46,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:02:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:02:46,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:46,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:02:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:02:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:02:46,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:02:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:02:46,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823558390] [2020-10-12 10:02:46,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:02:46,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:02:46,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347526762] [2020-10-12 10:02:46,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:02:46,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:02:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:02:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:02:46,839 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand 10 states. [2020-10-12 10:02:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:02:47,103 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2020-10-12 10:02:47,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:02:47,104 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-12 10:02:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:02:47,106 INFO L225 Difference]: With dead ends: 75 [2020-10-12 10:02:47,106 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 10:02:47,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:02:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 10:02:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2020-10-12 10:02:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-12 10:02:47,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2020-10-12 10:02:47,120 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 18 [2020-10-12 10:02:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:02:47,121 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2020-10-12 10:02:47,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:02:47,121 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2020-10-12 10:02:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 10:02:47,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:02:47,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:02:47,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:02:47,123 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:02:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:02:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash 181553840, now seen corresponding path program 1 times [2020-10-12 10:02:47,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:02:47,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961428701] [2020-10-12 10:02:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:02:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:47,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:47,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:47,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 10:02:47,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:02:47,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 10:02:47,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:02:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 10:02:47,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 10:02:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:02:47,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:02:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:47,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:47,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:47,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:02:47,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:02:47,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:02:47,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:02:47,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:02:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:02:47,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:02:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:02:47,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961428701] [2020-10-12 10:02:47,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:02:47,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:02:47,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603150358] [2020-10-12 10:02:47,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:02:47,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:02:47,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:02:47,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:02:47,272 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand 5 states. [2020-10-12 10:02:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:02:47,368 INFO L93 Difference]: Finished difference Result 143 states and 190 transitions. [2020-10-12 10:02:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:02:47,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 10:02:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:02:47,372 INFO L225 Difference]: With dead ends: 143 [2020-10-12 10:02:47,372 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 10:02:47,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:02:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 10:02:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 82. [2020-10-12 10:02:47,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 10:02:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2020-10-12 10:02:47,385 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 20 [2020-10-12 10:02:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:02:47,386 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2020-10-12 10:02:47,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:02:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2020-10-12 10:02:47,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 10:02:47,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:02:47,387 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:02:47,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:02:47,388 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:02:47,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:02:47,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1590841348, now seen corresponding path program 1 times [2020-10-12 10:02:47,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:02:47,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242318883] [2020-10-12 10:02:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:02:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:47,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:47,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:47,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:50,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:50,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 10:02:50,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:02:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2935 [2020-10-12 10:02:50,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:02:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:02:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:02:50,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:02:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:02:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:51,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:51,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:51,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:02:51,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:02:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:02:51,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:02:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:02:51,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:02:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:02:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:02:51,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242318883] [2020-10-12 10:02:51,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:02:51,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:02:51,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437739047] [2020-10-12 10:02:51,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:02:51,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:02:51,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:02:51,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:02:51,333 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 17 states. [2020-10-12 10:02:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:02:52,171 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2020-10-12 10:02:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:02:52,172 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2020-10-12 10:02:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:02:52,174 INFO L225 Difference]: With dead ends: 133 [2020-10-12 10:02:52,174 INFO L226 Difference]: Without dead ends: 131 [2020-10-12 10:02:52,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:02:52,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-12 10:02:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2020-10-12 10:02:52,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-12 10:02:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2020-10-12 10:02:52,190 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 27 [2020-10-12 10:02:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:02:52,190 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2020-10-12 10:02:52,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:02:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2020-10-12 10:02:52,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 10:02:52,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:02:52,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:02:52,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:02:52,193 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:02:52,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:02:52,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1849006786, now seen corresponding path program 1 times [2020-10-12 10:02:52,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:02:52,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430497059] [2020-10-12 10:02:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:02:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:52,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:52,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:55,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:55,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 10:02:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:02:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3453 [2020-10-12 10:02:55,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:02:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:02:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 10:02:55,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:02:56,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:02:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:56,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:56,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:02:56,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:02:56,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:02:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:02:56,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:02:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:02:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:02:56,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:02:56,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:02:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:02:56,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430497059] [2020-10-12 10:02:56,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:02:56,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:02:56,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349842260] [2020-10-12 10:02:56,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:02:56,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:02:56,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:02:56,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:02:56,043 INFO L87 Difference]: Start difference. First operand 100 states and 127 transitions. Second operand 14 states. [2020-10-12 10:02:56,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:02:56,655 INFO L93 Difference]: Finished difference Result 198 states and 258 transitions. [2020-10-12 10:02:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 10:02:56,656 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2020-10-12 10:02:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:02:56,657 INFO L225 Difference]: With dead ends: 198 [2020-10-12 10:02:56,657 INFO L226 Difference]: Without dead ends: 124 [2020-10-12 10:02:56,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:02:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-12 10:02:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2020-10-12 10:02:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-12 10:02:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 149 transitions. [2020-10-12 10:02:56,672 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 149 transitions. Word has length 27 [2020-10-12 10:02:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:02:56,672 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 149 transitions. [2020-10-12 10:02:56,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:02:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 149 transitions. [2020-10-12 10:02:56,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 10:02:56,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:02:56,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:02:56,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:02:56,674 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:02:56,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:02:56,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1802172202, now seen corresponding path program 2 times [2020-10-12 10:02:56,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:02:56,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720402475] [2020-10-12 10:02:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:02:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:02:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:57,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:57,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:57,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:02:58,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:01,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 10:03:01,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:03:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:03:01,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:03:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 10:03:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:02,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:02,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:02,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:02,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:02,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:02,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:02,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:03:02,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720402475] [2020-10-12 10:03:02,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:02,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:03:02,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303615536] [2020-10-12 10:03:02,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:03:02,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:02,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:03:02,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:03:02,769 INFO L87 Difference]: Start difference. First operand 116 states and 149 transitions. Second operand 20 states. [2020-10-12 10:03:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:04,057 INFO L93 Difference]: Finished difference Result 187 states and 243 transitions. [2020-10-12 10:03:04,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:03:04,058 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 33 [2020-10-12 10:03:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:04,060 INFO L225 Difference]: With dead ends: 187 [2020-10-12 10:03:04,060 INFO L226 Difference]: Without dead ends: 185 [2020-10-12 10:03:04,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:03:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-12 10:03:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 147. [2020-10-12 10:03:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-12 10:03:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 191 transitions. [2020-10-12 10:03:04,077 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 191 transitions. Word has length 33 [2020-10-12 10:03:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:04,078 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 191 transitions. [2020-10-12 10:03:04,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:03:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 191 transitions. [2020-10-12 10:03:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 10:03:04,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:04,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:04,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:03:04,080 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:04,081 INFO L82 PathProgramCache]: Analyzing trace with hash 522308524, now seen corresponding path program 2 times [2020-10-12 10:03:04,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:04,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672893623] [2020-10-12 10:03:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:04,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:09,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:09,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 10:03:09,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:03:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 10:03:09,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:03:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:03:09,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:03:09,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:09,917 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 60 [2020-10-12 10:03:10,202 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2020-10-12 10:03:10,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:10,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:10,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:10,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:03:10,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672893623] [2020-10-12 10:03:10,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:10,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:03:10,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810409664] [2020-10-12 10:03:10,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:03:10,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:10,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:03:10,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:03:10,402 INFO L87 Difference]: Start difference. First operand 147 states and 191 transitions. Second operand 18 states. [2020-10-12 10:03:11,147 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 41 [2020-10-12 10:03:11,307 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2020-10-12 10:03:11,943 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 47 [2020-10-12 10:03:12,657 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2020-10-12 10:03:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:12,974 INFO L93 Difference]: Finished difference Result 284 states and 372 transitions. [2020-10-12 10:03:12,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 10:03:12,974 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 33 [2020-10-12 10:03:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:12,977 INFO L225 Difference]: With dead ends: 284 [2020-10-12 10:03:12,977 INFO L226 Difference]: Without dead ends: 180 [2020-10-12 10:03:12,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=370, Invalid=1886, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 10:03:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-12 10:03:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 154. [2020-10-12 10:03:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-12 10:03:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 200 transitions. [2020-10-12 10:03:13,010 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 200 transitions. Word has length 33 [2020-10-12 10:03:13,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:13,011 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 200 transitions. [2020-10-12 10:03:13,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:03:13,011 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 200 transitions. [2020-10-12 10:03:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:03:13,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:13,013 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:13,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:03:13,013 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:13,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1613342780, now seen corresponding path program 3 times [2020-10-12 10:03:13,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:13,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193564281] [2020-10-12 10:03:13,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:13,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:13,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:13,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:14,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:18,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:18,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:03:18,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:03:18,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:03:18,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:18,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:03:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 10:03:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:19,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:19,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:19,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:19,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:19,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:19,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 10:03:19,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193564281] [2020-10-12 10:03:19,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:19,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:03:19,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045740209] [2020-10-12 10:03:19,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:03:19,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:19,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:03:19,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:03:19,394 INFO L87 Difference]: Start difference. First operand 154 states and 200 transitions. Second operand 22 states. [2020-10-12 10:03:20,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:20,605 INFO L93 Difference]: Finished difference Result 269 states and 351 transitions. [2020-10-12 10:03:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:03:20,606 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 39 [2020-10-12 10:03:20,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:20,609 INFO L225 Difference]: With dead ends: 269 [2020-10-12 10:03:20,609 INFO L226 Difference]: Without dead ends: 267 [2020-10-12 10:03:20,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:03:20,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-12 10:03:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 201. [2020-10-12 10:03:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-12 10:03:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 263 transitions. [2020-10-12 10:03:20,630 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 263 transitions. Word has length 39 [2020-10-12 10:03:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:20,631 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 263 transitions. [2020-10-12 10:03:20,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:03:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 263 transitions. [2020-10-12 10:03:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:03:20,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:20,633 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:20,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:03:20,634 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:20,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash 687479810, now seen corresponding path program 3 times [2020-10-12 10:03:20,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:20,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542773463] [2020-10-12 10:03:20,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:20,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:20,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:25,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:25,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:03:25,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:03:25,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 10:03:25,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:03:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:03:25,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 10:03:25,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:26,211 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2020-10-12 10:03:26,629 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 34 [2020-10-12 10:03:27,001 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 50 [2020-10-12 10:03:27,302 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 40 [2020-10-12 10:03:27,606 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 42 [2020-10-12 10:03:28,997 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 180 DAG size of output: 86 [2020-10-12 10:03:29,295 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 35 [2020-10-12 10:03:29,650 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 40 [2020-10-12 10:03:29,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:29,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:29,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:29,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:29,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:29,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:03:29,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542773463] [2020-10-12 10:03:29,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:29,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:03:29,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659900066] [2020-10-12 10:03:29,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:03:29,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:03:29,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:03:29,899 INFO L87 Difference]: Start difference. First operand 201 states and 263 transitions. Second operand 22 states. [2020-10-12 10:03:30,267 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 40 [2020-10-12 10:03:30,892 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 56 [2020-10-12 10:03:31,165 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 44 [2020-10-12 10:03:31,563 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-12 10:03:32,016 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2020-10-12 10:03:32,368 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2020-10-12 10:03:32,532 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-12 10:03:32,785 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-12 10:03:32,956 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-12 10:03:33,520 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 64 [2020-10-12 10:03:33,872 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-12 10:03:34,382 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-12 10:03:34,770 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 55 [2020-10-12 10:03:35,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:35,097 INFO L93 Difference]: Finished difference Result 445 states and 589 transitions. [2020-10-12 10:03:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-12 10:03:35,097 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 39 [2020-10-12 10:03:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:35,100 INFO L225 Difference]: With dead ends: 445 [2020-10-12 10:03:35,101 INFO L226 Difference]: Without dead ends: 311 [2020-10-12 10:03:35,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=649, Invalid=3641, Unknown=0, NotChecked=0, Total=4290 [2020-10-12 10:03:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-12 10:03:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 265. [2020-10-12 10:03:35,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-12 10:03:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 349 transitions. [2020-10-12 10:03:35,145 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 349 transitions. Word has length 39 [2020-10-12 10:03:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:35,145 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 349 transitions. [2020-10-12 10:03:35,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:03:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 349 transitions. [2020-10-12 10:03:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 10:03:35,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:35,152 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:35,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:03:35,153 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash 728753516, now seen corresponding path program 4 times [2020-10-12 10:03:35,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:35,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983918734] [2020-10-12 10:03:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:40,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:40,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 10:03:40,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:03:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:03:40,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 10:03:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:03:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 10:03:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:40,864 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 23 [2020-10-12 10:03:41,062 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 24 [2020-10-12 10:03:41,269 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 38 [2020-10-12 10:03:41,593 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 32 [2020-10-12 10:03:42,147 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 34 [2020-10-12 10:03:42,924 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 50 [2020-10-12 10:03:43,358 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 41 [2020-10-12 10:03:43,828 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 42 [2020-10-12 10:03:44,437 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 60 [2020-10-12 10:03:44,797 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 49 [2020-10-12 10:03:45,283 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 51 [2020-10-12 10:03:47,261 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 269 DAG size of output: 86 [2020-10-12 10:03:47,807 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 39 [2020-10-12 10:03:48,891 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 112 DAG size of output: 45 [2020-10-12 10:03:49,038 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-10-12 10:03:49,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:49,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:49,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:49,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:49,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:03:49,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983918734] [2020-10-12 10:03:49,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:49,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:03:49,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330534667] [2020-10-12 10:03:49,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:03:49,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:49,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:03:49,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:03:49,299 INFO L87 Difference]: Start difference. First operand 265 states and 349 transitions. Second operand 26 states. [2020-10-12 10:03:50,141 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 58 [2020-10-12 10:03:50,320 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 45 [2020-10-12 10:03:50,747 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2020-10-12 10:03:51,184 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2020-10-12 10:03:51,509 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2020-10-12 10:03:51,688 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-12 10:03:51,985 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-12 10:03:52,190 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-12 10:03:52,473 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-12 10:03:52,856 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 84 [2020-10-12 10:03:53,376 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 80 [2020-10-12 10:03:53,602 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-12 10:03:54,009 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-12 10:03:54,259 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-12 10:03:55,101 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 92 [2020-10-12 10:03:55,674 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-12 10:03:56,142 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-12 10:03:56,467 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-10-12 10:03:56,931 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-12 10:03:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:57,322 INFO L93 Difference]: Finished difference Result 581 states and 769 transitions. [2020-10-12 10:03:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-12 10:03:57,323 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 45 [2020-10-12 10:03:57,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:57,327 INFO L225 Difference]: With dead ends: 581 [2020-10-12 10:03:57,327 INFO L226 Difference]: Without dead ends: 414 [2020-10-12 10:03:57,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2598 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=1066, Invalid=6416, Unknown=0, NotChecked=0, Total=7482 [2020-10-12 10:03:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-12 10:03:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 338. [2020-10-12 10:03:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-12 10:03:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 447 transitions. [2020-10-12 10:03:57,358 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 447 transitions. Word has length 45 [2020-10-12 10:03:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:57,358 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 447 transitions. [2020-10-12 10:03:57,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:03:57,359 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 447 transitions. [2020-10-12 10:03:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:03:57,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:57,360 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:57,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:03:57,361 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:57,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:57,361 INFO L82 PathProgramCache]: Analyzing trace with hash 701205826, now seen corresponding path program 5 times [2020-10-12 10:03:57,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:57,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141560682] [2020-10-12 10:03:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:57,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:02,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:02,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:04:02,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:04:02,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:04:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:02,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:04:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:02,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:02,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:02,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:02,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:02,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:02,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:02,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 11 proven. 38 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-12 10:04:02,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141560682] [2020-10-12 10:04:02,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:02,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:04:02,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011445957] [2020-10-12 10:04:02,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:04:02,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:02,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:04:02,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:04:02,792 INFO L87 Difference]: Start difference. First operand 338 states and 447 transitions. Second operand 14 states. [2020-10-12 10:04:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:03,254 INFO L93 Difference]: Finished difference Result 406 states and 537 transitions. [2020-10-12 10:04:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:04:03,255 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-12 10:04:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:03,259 INFO L225 Difference]: With dead ends: 406 [2020-10-12 10:04:03,259 INFO L226 Difference]: Without dead ends: 373 [2020-10-12 10:04:03,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:04:03,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-12 10:04:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 344. [2020-10-12 10:04:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-12 10:04:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 455 transitions. [2020-10-12 10:04:03,285 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 455 transitions. Word has length 51 [2020-10-12 10:04:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:03,285 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 455 transitions. [2020-10-12 10:04:03,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:04:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 455 transitions. [2020-10-12 10:04:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:04:03,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:03,287 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:03,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:04:03,287 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:03,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:03,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2087409220, now seen corresponding path program 1 times [2020-10-12 10:04:03,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:03,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804014607] [2020-10-12 10:04:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:03,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:03,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:08,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:04:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:04:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 10:04:08,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:04:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:04:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:08,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:08,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:08,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:08,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:08,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:08,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:08,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-12 10:04:08,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804014607] [2020-10-12 10:04:08,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:08,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:04:08,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064097907] [2020-10-12 10:04:08,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:04:08,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:08,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:04:08,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:04:08,597 INFO L87 Difference]: Start difference. First operand 344 states and 455 transitions. Second operand 13 states. [2020-10-12 10:04:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:09,036 INFO L93 Difference]: Finished difference Result 476 states and 629 transitions. [2020-10-12 10:04:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:04:09,037 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-12 10:04:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:09,041 INFO L225 Difference]: With dead ends: 476 [2020-10-12 10:04:09,041 INFO L226 Difference]: Without dead ends: 424 [2020-10-12 10:04:09,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:04:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-12 10:04:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 346. [2020-10-12 10:04:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 346 states. [2020-10-12 10:04:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 458 transitions. [2020-10-12 10:04:09,070 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 458 transitions. Word has length 51 [2020-10-12 10:04:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:09,070 INFO L479 AbstractCegarLoop]: Abstraction has 346 states and 458 transitions. [2020-10-12 10:04:09,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:04:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 458 transitions. [2020-10-12 10:04:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:04:09,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:09,072 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:09,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:04:09,072 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:09,073 INFO L82 PathProgramCache]: Analyzing trace with hash 975965440, now seen corresponding path program 2 times [2020-10-12 10:04:09,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:09,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755147725] [2020-10-12 10:04:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:09,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:14,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:14,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:04:14,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:04:14,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:04:14,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:04:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:14,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 10:04:14,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:14,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:14,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:14,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:14,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:14,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:14,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:14,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:14,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:14,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 10:04:14,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755147725] [2020-10-12 10:04:14,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:14,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:04:14,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286882190] [2020-10-12 10:04:14,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:04:14,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:14,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:04:14,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:04:14,953 INFO L87 Difference]: Start difference. First operand 346 states and 458 transitions. Second operand 20 states. [2020-10-12 10:04:16,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:16,019 INFO L93 Difference]: Finished difference Result 550 states and 732 transitions. [2020-10-12 10:04:16,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:04:16,020 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-10-12 10:04:16,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:16,025 INFO L225 Difference]: With dead ends: 550 [2020-10-12 10:04:16,025 INFO L226 Difference]: Without dead ends: 510 [2020-10-12 10:04:16,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:04:16,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-12 10:04:16,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 445. [2020-10-12 10:04:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-12 10:04:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 588 transitions. [2020-10-12 10:04:16,059 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 588 transitions. Word has length 51 [2020-10-12 10:04:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:16,059 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 588 transitions. [2020-10-12 10:04:16,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:04:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 588 transitions. [2020-10-12 10:04:16,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:04:16,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:16,061 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:16,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:04:16,062 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:16,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:16,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1234130878, now seen corresponding path program 3 times [2020-10-12 10:04:16,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:16,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219246338] [2020-10-12 10:04:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:21,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:04:21,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:04:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:04:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:04:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:21,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:21,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:21,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:21,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:21,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:21,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:21,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:21,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 11 proven. 47 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 10:04:21,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219246338] [2020-10-12 10:04:21,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:21,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:04:21,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048523953] [2020-10-12 10:04:21,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:04:21,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:21,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:04:21,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:04:21,666 INFO L87 Difference]: Start difference. First operand 445 states and 588 transitions. Second operand 17 states. [2020-10-12 10:04:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:22,472 INFO L93 Difference]: Finished difference Result 672 states and 888 transitions. [2020-10-12 10:04:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:04:22,473 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-10-12 10:04:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:22,478 INFO L225 Difference]: With dead ends: 672 [2020-10-12 10:04:22,478 INFO L226 Difference]: Without dead ends: 599 [2020-10-12 10:04:22,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:04:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-12 10:04:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 460. [2020-10-12 10:04:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-12 10:04:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 609 transitions. [2020-10-12 10:04:22,530 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 609 transitions. Word has length 51 [2020-10-12 10:04:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:22,530 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 609 transitions. [2020-10-12 10:04:22,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:04:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 609 transitions. [2020-10-12 10:04:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:04:22,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:22,532 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:22,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:04:22,533 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:22,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:22,533 INFO L82 PathProgramCache]: Analyzing trace with hash -142799676, now seen corresponding path program 4 times [2020-10-12 10:04:22,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:22,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183961528] [2020-10-12 10:04:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:22,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:22,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:27,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:27,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:04:27,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:04:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:04:27,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 10:04:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:04:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:28,084 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-12 10:04:28,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:28,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:28,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:28,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:28,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:28,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:28,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 23 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 10:04:28,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183961528] [2020-10-12 10:04:28,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:28,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 10:04:28,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590281545] [2020-10-12 10:04:28,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 10:04:28,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:28,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 10:04:28,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:04:28,708 INFO L87 Difference]: Start difference. First operand 460 states and 609 transitions. Second operand 27 states. [2020-10-12 10:04:30,616 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-12 10:04:33,277 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-12 10:04:33,590 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 10:04:34,414 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2020-10-12 10:04:34,636 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2020-10-12 10:04:34,848 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2020-10-12 10:04:36,839 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2020-10-12 10:04:37,008 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 37 [2020-10-12 10:04:37,816 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 38 [2020-10-12 10:04:37,991 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 45 [2020-10-12 10:04:38,338 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 47 [2020-10-12 10:04:38,886 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2020-10-12 10:04:39,242 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 30 [2020-10-12 10:04:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:39,638 INFO L93 Difference]: Finished difference Result 1012 states and 1325 transitions. [2020-10-12 10:04:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-10-12 10:04:39,639 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-10-12 10:04:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:39,645 INFO L225 Difference]: With dead ends: 1012 [2020-10-12 10:04:39,645 INFO L226 Difference]: Without dead ends: 984 [2020-10-12 10:04:39,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4941 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1593, Invalid=13169, Unknown=0, NotChecked=0, Total=14762 [2020-10-12 10:04:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-10-12 10:04:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 708. [2020-10-12 10:04:39,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2020-10-12 10:04:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 943 transitions. [2020-10-12 10:04:39,712 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 943 transitions. Word has length 51 [2020-10-12 10:04:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:39,712 INFO L479 AbstractCegarLoop]: Abstraction has 708 states and 943 transitions. [2020-10-12 10:04:39,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 10:04:39,713 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 943 transitions. [2020-10-12 10:04:39,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 10:04:39,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:39,715 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:39,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:04:39,715 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:39,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:39,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1422663354, now seen corresponding path program 5 times [2020-10-12 10:04:39,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:39,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917904472] [2020-10-12 10:04:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:44,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:44,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:04:44,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:04:44,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:04:44,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 10:04:44,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:04:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 10:04:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:45,271 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2020-10-12 10:04:46,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:46,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:46,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:46,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:46,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:04:46,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917904472] [2020-10-12 10:04:46,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:46,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 10:04:46,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876254860] [2020-10-12 10:04:46,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 10:04:46,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:46,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 10:04:46,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:04:46,264 INFO L87 Difference]: Start difference. First operand 708 states and 943 transitions. Second operand 27 states. [2020-10-12 10:04:47,882 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-12 10:04:48,041 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-12 10:04:48,814 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-12 10:04:49,025 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-12 10:04:49,421 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-12 10:04:49,578 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-12 10:04:49,925 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-12 10:04:50,128 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-12 10:04:50,976 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 10:04:51,118 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 10:04:52,678 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-12 10:04:52,910 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 10:04:53,070 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-12 10:04:53,245 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-12 10:04:53,427 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 10:04:53,611 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-12 10:04:54,038 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-12 10:04:54,209 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-12 10:04:55,063 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-12 10:04:55,310 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-12 10:04:56,267 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-12 10:04:56,430 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-12 10:04:59,944 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-12 10:05:00,229 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 10:05:00,461 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-12 10:05:00,675 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 10:05:00,941 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-12 10:05:01,190 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 10:05:01,366 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 10:05:01,540 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-12 10:05:01,777 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-12 10:05:02,005 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 10:05:02,146 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-12 10:05:02,420 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 10:05:02,595 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-12 10:05:03,033 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-12 10:05:03,290 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 10:05:03,447 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 10:05:03,615 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-12 10:05:03,787 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-12 10:05:03,956 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-12 10:05:04,378 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 10:05:04,561 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-12 10:05:05,506 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2020-10-12 10:05:05,850 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-10-12 10:05:06,056 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-12 10:05:06,243 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-12 10:05:06,475 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-12 10:05:06,694 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-12 10:05:06,862 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-12 10:05:07,331 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-12 10:05:07,623 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-12 10:05:08,037 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-12 10:05:08,249 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-12 10:05:08,674 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-12 10:05:08,926 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-12 10:05:09,431 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-10-12 10:05:10,090 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-12 10:05:10,345 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-12 10:05:14,835 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-10-12 10:05:15,223 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2020-10-12 10:05:15,527 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-12 10:05:15,828 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-12 10:05:16,178 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2020-10-12 10:05:16,509 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-10-12 10:05:16,769 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-12 10:05:17,027 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-12 10:05:17,319 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-12 10:05:17,599 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-10-12 10:05:17,803 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-12 10:05:18,018 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2020-10-12 10:05:18,272 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-12 10:05:18,549 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-12 10:05:19,171 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-12 10:05:19,408 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 10:05:19,587 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 10:05:19,778 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-12 10:05:19,973 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-12 10:05:20,173 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-12 10:05:20,732 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 10:05:20,985 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-12 10:05:22,563 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-10-12 10:05:23,079 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2020-10-12 10:05:23,405 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-12 10:05:23,717 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-12 10:05:24,089 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2020-10-12 10:05:24,469 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2020-10-12 10:05:24,756 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-12 10:05:25,050 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-12 10:05:25,558 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2020-10-12 10:05:26,038 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-12 10:05:26,310 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-12 10:05:26,550 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-12 10:05:26,823 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-12 10:05:27,097 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-10-12 10:05:27,709 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-10-12 10:05:27,936 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-12 10:05:29,123 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-12 10:05:29,347 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-12 10:05:30,560 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 10:05:30,727 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-12 10:05:30,893 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-12 10:05:31,823 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-12 10:05:32,976 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-12 10:05:35,019 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-12 10:05:37,241 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 10:05:37,431 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-12 10:05:37,745 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-12 10:05:37,907 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-12 10:05:38,208 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-12 10:05:38,372 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-12 10:05:38,638 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 10:05:39,095 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-12 10:05:39,265 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-12 10:05:39,526 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 10:05:39,980 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 10:05:40,225 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-12 10:05:40,535 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 10:05:41,170 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-12 10:05:41,409 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-12 10:05:41,805 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 10:05:42,007 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-12 10:05:42,422 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 10:05:42,673 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-12 10:05:43,038 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 10:05:43,262 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-12 10:05:43,697 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-12 10:05:43,932 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-10-12 10:05:44,285 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 10:05:44,491 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-12 10:05:44,845 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 10:05:45,049 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-12 10:05:45,299 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-12 10:05:45,823 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-12 10:05:46,066 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-12 10:05:46,316 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-12 10:05:46,538 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 10:05:46,785 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-12 10:05:46,998 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 10:05:47,214 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 10:05:47,407 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-12 10:05:47,666 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-12 10:05:47,896 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 10:05:48,120 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 10:05:48,525 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 10:05:48,711 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-12 10:05:48,904 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-12 10:05:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:50,128 INFO L93 Difference]: Finished difference Result 1788 states and 2422 transitions. [2020-10-12 10:05:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 386 states. [2020-10-12 10:05:50,130 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-10-12 10:05:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:50,138 INFO L225 Difference]: With dead ends: 1788 [2020-10-12 10:05:50,138 INFO L226 Difference]: Without dead ends: 1364 [2020-10-12 10:05:50,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 401 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73387 ImplicationChecksByTransitivity, 59.8s TimeCoverageRelationStatistics Valid=11814, Invalid=150192, Unknown=0, NotChecked=0, Total=162006 [2020-10-12 10:05:50,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2020-10-12 10:05:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 993. [2020-10-12 10:05:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-10-12 10:05:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1354 transitions. [2020-10-12 10:05:50,262 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1354 transitions. Word has length 51 [2020-10-12 10:05:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:50,263 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1354 transitions. [2020-10-12 10:05:50,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 10:05:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1354 transitions. [2020-10-12 10:05:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 10:05:50,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:50,266 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:50,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:05:50,267 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1039491860, now seen corresponding path program 6 times [2020-10-12 10:05:50,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:50,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824569285] [2020-10-12 10:05:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:50,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:50,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:50,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 10:05:55,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:05:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:05:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 10:05:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:05:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 10:05:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:55,629 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 21 [2020-10-12 10:05:57,862 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 59 DAG size of output: 24 [2020-10-12 10:05:58,042 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 25 [2020-10-12 10:05:58,308 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-10-12 10:05:58,602 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-10-12 10:05:58,854 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 39 [2020-10-12 10:05:59,100 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 25 [2020-10-12 10:05:59,399 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 25 [2020-10-12 10:05:59,686 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-10-12 10:06:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:01,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:01,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:01,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:01,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:01,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:01,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:06:01,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824569285] [2020-10-12 10:06:01,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:01,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 10:06:01,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161808490] [2020-10-12 10:06:01,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 10:06:01,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:01,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 10:06:01,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:06:01,356 INFO L87 Difference]: Start difference. First operand 993 states and 1354 transitions. Second operand 30 states. [2020-10-12 10:06:03,025 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-12 10:06:03,178 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-12 10:06:03,943 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2020-10-12 10:06:04,904 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-10-12 10:06:05,127 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-10-12 10:06:05,282 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-12 10:06:05,437 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-12 10:06:05,614 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-12 10:06:05,771 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-12 10:06:06,205 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-12 10:06:06,551 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-12 10:06:06,781 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2020-10-12 10:06:06,985 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2020-10-12 10:06:08,102 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-12 10:06:08,566 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-12 10:06:08,845 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-12 10:06:09,162 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-12 10:06:09,490 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-12 10:06:09,802 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-12 10:06:10,023 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-10-12 10:06:10,225 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2020-10-12 10:06:10,535 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-10-12 10:06:10,835 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-12 10:06:11,047 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-10-12 10:06:11,260 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2020-10-12 10:06:11,481 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-10-12 10:06:11,709 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2020-10-12 10:06:12,748 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-12 10:06:13,419 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-12 10:06:13,926 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-10-12 10:06:14,426 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-12 10:06:14,936 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-12 10:06:15,278 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-12 10:06:15,444 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-10-12 10:06:15,955 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-12 10:06:16,279 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-12 10:06:16,496 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-12 10:06:16,703 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-12 10:06:16,946 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-12 10:06:17,173 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-12 10:06:17,776 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-10-12 10:06:18,167 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 49 [2020-10-12 10:06:18,458 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-12 10:06:18,833 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-12 10:06:19,203 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-10-12 10:06:19,543 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-12 10:06:19,870 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-12 10:06:20,160 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-12 10:06:20,639 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2020-10-12 10:06:21,021 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-10-12 10:06:21,277 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-10-12 10:06:21,550 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-10-12 10:06:21,843 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-10-12 10:06:22,133 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-12 10:06:23,030 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-12 10:06:23,436 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-12 10:06:23,778 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 10:06:24,135 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 10:06:24,480 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 10:06:24,804 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 10:06:25,062 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 10:06:25,304 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-12 10:06:25,633 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 10:06:25,982 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 10:06:26,314 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 10:06:26,620 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-12 10:06:26,949 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 10:06:27,258 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-12 10:06:27,962 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 10:06:28,283 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 10:06:28,540 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 10:06:28,792 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-12 10:06:29,060 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 10:06:29,326 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-12 10:06:29,722 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-10-12 10:06:29,995 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 10:06:30,269 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-12 10:06:31,569 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-12 10:06:31,990 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-10-12 10:06:32,328 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-10-12 10:06:32,684 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-12 10:06:33,073 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-12 10:06:33,425 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-12 10:06:33,657 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-12 10:06:33,891 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-12 10:06:34,441 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-12 10:06:34,965 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-12 10:06:35,336 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-12 10:06:35,688 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-12 10:06:36,089 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-12 10:06:36,498 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-12 10:06:36,723 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-12 10:06:37,007 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-10-12 10:06:37,574 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-12 10:06:38,164 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-12 10:06:38,599 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-12 10:06:39,074 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49