/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/psyco/psyco_abp_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:11:39,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:11:39,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:11:39,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:11:39,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:11:39,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:11:39,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:11:39,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:11:39,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:11:39,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:11:39,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:11:39,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:11:39,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:11:39,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:11:39,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:11:39,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:11:39,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:11:39,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:11:39,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:11:39,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:11:39,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:11:39,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:11:39,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:11:39,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:11:39,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:11:39,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:11:39,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:11:39,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:11:39,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:11:39,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:11:39,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:11:39,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:11:39,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:11:39,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:11:39,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:11:39,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:11:39,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:11:39,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:11:39,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:11:39,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:11:39,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:11:39,552 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 18:11:39,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:11:39,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:11:39,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:11:39,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:11:39,575 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:11:39,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:11:39,576 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:11:39,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:11:39,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:11:39,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:11:39,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:11:39,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:11:39,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:11:39,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:11:39,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:11:39,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:11:39,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:11:39,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:11:39,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:11:39,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:11:39,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:11:39,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:11:39,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:11:39,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:11:39,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:11:39,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:11:39,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:11:39,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:11:39,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:11:39,580 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 18:11:39,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:11:39,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:11:39,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:11:39,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:11:39,900 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:11:39,900 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_abp_1-1.c [2020-10-12 18:11:39,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ce27b756/8c5f535532aa4f9ba0584cdff9d36b9e/FLAG397cc30aa [2020-10-12 18:11:40,514 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:11:40,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_abp_1-1.c [2020-10-12 18:11:40,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ce27b756/8c5f535532aa4f9ba0584cdff9d36b9e/FLAG397cc30aa [2020-10-12 18:11:40,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ce27b756/8c5f535532aa4f9ba0584cdff9d36b9e [2020-10-12 18:11:40,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:11:40,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:11:40,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:11:40,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:11:40,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:11:40,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:11:40" (1/1) ... [2020-10-12 18:11:40,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c42496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:40, skipping insertion in model container [2020-10-12 18:11:40,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:11:40" (1/1) ... [2020-10-12 18:11:40,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:11:40,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:11:41,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:11:41,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:11:41,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:11:41,431 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:11:41,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41 WrapperNode [2020-10-12 18:11:41,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:11:41,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:11:41,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:11:41,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:11:41,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (1/1) ... [2020-10-12 18:11:41,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (1/1) ... [2020-10-12 18:11:41,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (1/1) ... [2020-10-12 18:11:41,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (1/1) ... [2020-10-12 18:11:41,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (1/1) ... [2020-10-12 18:11:41,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (1/1) ... [2020-10-12 18:11:41,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (1/1) ... [2020-10-12 18:11:41,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:11:41,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:11:41,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:11:41,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:11:41,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (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 18:11:41,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:11:41,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:11:41,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:11:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:11:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:11:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:11:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:11:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:11:42,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:11:42,487 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 18:11:42,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:11:42 BoogieIcfgContainer [2020-10-12 18:11:42,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:11:42,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:11:42,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:11:42,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:11:42,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:11:40" (1/3) ... [2020-10-12 18:11:42,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f440fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:11:42, skipping insertion in model container [2020-10-12 18:11:42,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:11:41" (2/3) ... [2020-10-12 18:11:42,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f440fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:11:42, skipping insertion in model container [2020-10-12 18:11:42,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:11:42" (3/3) ... [2020-10-12 18:11:42,502 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-1.c [2020-10-12 18:11:42,514 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:11:42,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:11:42,538 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:11:42,566 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:11:42,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:11:42,566 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:11:42,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:11:42,567 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:11:42,567 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:11:42,567 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:11:42,567 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:11:42,592 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2020-10-12 18:11:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 18:11:42,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:42,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:42,601 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:42,608 INFO L82 PathProgramCache]: Analyzing trace with hash 919157391, now seen corresponding path program 1 times [2020-10-12 18:11:42,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:42,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225145231] [2020-10-12 18:11:42,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:42,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:42,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:42,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:11:42,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:42,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 18:11:42,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:11:42,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:11:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 18:11:43,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:43,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:43,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:11:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:43,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:43,050 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 18:11:43,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225145231] [2020-10-12 18:11:43,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:43,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:43,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094091622] [2020-10-12 18:11:43,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:43,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:43,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:43,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:43,078 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 4 states. [2020-10-12 18:11:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:43,791 INFO L93 Difference]: Finished difference Result 331 states and 635 transitions. [2020-10-12 18:11:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:43,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-12 18:11:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:43,809 INFO L225 Difference]: With dead ends: 331 [2020-10-12 18:11:43,809 INFO L226 Difference]: Without dead ends: 206 [2020-10-12 18:11:43,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-12 18:11:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 182. [2020-10-12 18:11:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-12 18:11:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 314 transitions. [2020-10-12 18:11:43,875 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 314 transitions. Word has length 14 [2020-10-12 18:11:43,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:43,875 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 314 transitions. [2020-10-12 18:11:43,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 314 transitions. [2020-10-12 18:11:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 18:11:43,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:43,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:43,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:11:43,879 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:43,880 INFO L82 PathProgramCache]: Analyzing trace with hash 736602936, now seen corresponding path program 1 times [2020-10-12 18:11:43,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:43,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415142189] [2020-10-12 18:11:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:44,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:44,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 18:11:44,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:44,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-12 18:11:44,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 18:11:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:11:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:11:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:44,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:44,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:44,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:44,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:11:44,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:11:44,214 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 18:11:44,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415142189] [2020-10-12 18:11:44,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:44,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:44,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539018120] [2020-10-12 18:11:44,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:44,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:44,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:44,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:44,219 INFO L87 Difference]: Start difference. First operand 182 states and 314 transitions. Second operand 4 states. [2020-10-12 18:11:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:44,588 INFO L93 Difference]: Finished difference Result 365 states and 632 transitions. [2020-10-12 18:11:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:44,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-12 18:11:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:44,591 INFO L225 Difference]: With dead ends: 365 [2020-10-12 18:11:44,591 INFO L226 Difference]: Without dead ends: 189 [2020-10-12 18:11:44,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-12 18:11:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2020-10-12 18:11:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-12 18:11:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 322 transitions. [2020-10-12 18:11:44,607 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 322 transitions. Word has length 15 [2020-10-12 18:11:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:44,608 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 322 transitions. [2020-10-12 18:11:44,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 322 transitions. [2020-10-12 18:11:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 18:11:44,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:44,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:44,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:11:44,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:44,611 INFO L82 PathProgramCache]: Analyzing trace with hash 816788357, now seen corresponding path program 1 times [2020-10-12 18:11:44,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:44,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704245867] [2020-10-12 18:11:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:44,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:44,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:11:44,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:44,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 18:11:44,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:44,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:11:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:44,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:44,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:44,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:44,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:11:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:11:44,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704245867] [2020-10-12 18:11:44,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:44,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:44,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130803240] [2020-10-12 18:11:44,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:44,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:44,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:44,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:44,808 INFO L87 Difference]: Start difference. First operand 189 states and 322 transitions. Second operand 4 states. [2020-10-12 18:11:45,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:45,232 INFO L93 Difference]: Finished difference Result 290 states and 484 transitions. [2020-10-12 18:11:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:45,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 18:11:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:45,237 INFO L225 Difference]: With dead ends: 290 [2020-10-12 18:11:45,237 INFO L226 Difference]: Without dead ends: 274 [2020-10-12 18:11:45,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-12 18:11:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 259. [2020-10-12 18:11:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-12 18:11:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 436 transitions. [2020-10-12 18:11:45,277 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 436 transitions. Word has length 21 [2020-10-12 18:11:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:45,278 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 436 transitions. [2020-10-12 18:11:45,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 436 transitions. [2020-10-12 18:11:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 18:11:45,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:45,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:45,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:11:45,282 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1993084704, now seen corresponding path program 1 times [2020-10-12 18:11:45,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:45,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330586103] [2020-10-12 18:11:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:45,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:45,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:11:45,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 18:11:45,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:11:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:45,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:45,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:45,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:45,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:11:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:45,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:11:45,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330586103] [2020-10-12 18:11:45,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:45,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:45,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421373590] [2020-10-12 18:11:45,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:45,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:45,440 INFO L87 Difference]: Start difference. First operand 259 states and 436 transitions. Second operand 4 states. [2020-10-12 18:11:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:45,760 INFO L93 Difference]: Finished difference Result 468 states and 791 transitions. [2020-10-12 18:11:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:45,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-12 18:11:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:45,762 INFO L225 Difference]: With dead ends: 468 [2020-10-12 18:11:45,763 INFO L226 Difference]: Without dead ends: 216 [2020-10-12 18:11:45,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-12 18:11:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2020-10-12 18:11:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-12 18:11:45,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 355 transitions. [2020-10-12 18:11:45,776 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 355 transitions. Word has length 22 [2020-10-12 18:11:45,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:45,777 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 355 transitions. [2020-10-12 18:11:45,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 355 transitions. [2020-10-12 18:11:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 18:11:45,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:45,779 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:45,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:11:45,779 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash -365898165, now seen corresponding path program 1 times [2020-10-12 18:11:45,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:45,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593624810] [2020-10-12 18:11:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:45,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:45,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:45,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:45,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:11:45,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:45,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-12 18:11:45,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:11:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:45,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:11:45,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:46,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:46,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:46,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:46,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:46,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:46,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:46,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:46,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:11:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:11:46,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593624810] [2020-10-12 18:11:46,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:11:46,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:11:46,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303756955] [2020-10-12 18:11:46,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:11:46,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:46,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:11:46,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:46,055 INFO L87 Difference]: Start difference. First operand 214 states and 355 transitions. Second operand 5 states. [2020-10-12 18:11:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:46,840 INFO L93 Difference]: Finished difference Result 556 states and 912 transitions. [2020-10-12 18:11:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:11:46,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-12 18:11:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:46,844 INFO L225 Difference]: With dead ends: 556 [2020-10-12 18:11:46,845 INFO L226 Difference]: Without dead ends: 345 [2020-10-12 18:11:46,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:11:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-12 18:11:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 291. [2020-10-12 18:11:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-12 18:11:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 498 transitions. [2020-10-12 18:11:46,862 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 498 transitions. Word has length 28 [2020-10-12 18:11:46,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:46,862 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 498 transitions. [2020-10-12 18:11:46,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:11:46,862 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 498 transitions. [2020-10-12 18:11:46,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 18:11:46,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:46,864 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:46,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:11:46,864 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:46,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1409109197, now seen corresponding path program 1 times [2020-10-12 18:11:46,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:46,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023508880] [2020-10-12 18:11:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:47,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:47,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:11:47,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 18:11:47,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:47,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 18:11:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:11:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:11:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:47,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:47,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:47,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:47,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:47,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:47,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:47,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:47,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:11:47,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023508880] [2020-10-12 18:11:47,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:47,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:47,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573423556] [2020-10-12 18:11:47,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:47,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:47,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:47,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:47,062 INFO L87 Difference]: Start difference. First operand 291 states and 498 transitions. Second operand 4 states. [2020-10-12 18:11:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:47,213 INFO L93 Difference]: Finished difference Result 531 states and 909 transitions. [2020-10-12 18:11:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:47,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-12 18:11:47,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:47,216 INFO L225 Difference]: With dead ends: 531 [2020-10-12 18:11:47,216 INFO L226 Difference]: Without dead ends: 247 [2020-10-12 18:11:47,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-12 18:11:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2020-10-12 18:11:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-12 18:11:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 408 transitions. [2020-10-12 18:11:47,228 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 408 transitions. Word has length 28 [2020-10-12 18:11:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:47,229 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 408 transitions. [2020-10-12 18:11:47,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:47,229 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 408 transitions. [2020-10-12 18:11:47,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 18:11:47,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:47,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:47,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:11:47,231 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash -944739986, now seen corresponding path program 1 times [2020-10-12 18:11:47,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:47,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222692282] [2020-10-12 18:11:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:47,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:47,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:47,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:47,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:11:47,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 18:11:47,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:11:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:11:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:47,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:47,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:47,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:47,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:47,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:47,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:47,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:11:47,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222692282] [2020-10-12 18:11:47,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:11:47,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:11:47,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424358379] [2020-10-12 18:11:47,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:11:47,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:47,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:11:47,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:47,493 INFO L87 Difference]: Start difference. First operand 245 states and 408 transitions. Second operand 5 states. [2020-10-12 18:11:48,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:48,124 INFO L93 Difference]: Finished difference Result 462 states and 779 transitions. [2020-10-12 18:11:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:11:48,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-12 18:11:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:48,129 INFO L225 Difference]: With dead ends: 462 [2020-10-12 18:11:48,130 INFO L226 Difference]: Without dead ends: 450 [2020-10-12 18:11:48,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:11:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-10-12 18:11:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 438. [2020-10-12 18:11:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2020-10-12 18:11:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 730 transitions. [2020-10-12 18:11:48,154 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 730 transitions. Word has length 30 [2020-10-12 18:11:48,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:48,154 INFO L479 AbstractCegarLoop]: Abstraction has 438 states and 730 transitions. [2020-10-12 18:11:48,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:11:48,155 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 730 transitions. [2020-10-12 18:11:48,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 18:11:48,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:48,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:48,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:11:48,160 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:48,162 INFO L82 PathProgramCache]: Analyzing trace with hash 789275061, now seen corresponding path program 1 times [2020-10-12 18:11:48,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:48,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319820970] [2020-10-12 18:11:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:48,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:11:48,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:48,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 18:11:48,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:48,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:11:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:11:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:48,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:48,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:48,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:11:48,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:11:48,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319820970] [2020-10-12 18:11:48,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:11:48,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:11:48,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080636396] [2020-10-12 18:11:48,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:11:48,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:48,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:11:48,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:48,647 INFO L87 Difference]: Start difference. First operand 438 states and 730 transitions. Second operand 5 states. [2020-10-12 18:11:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:49,290 INFO L93 Difference]: Finished difference Result 495 states and 817 transitions. [2020-10-12 18:11:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:11:49,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-12 18:11:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:49,295 INFO L225 Difference]: With dead ends: 495 [2020-10-12 18:11:49,295 INFO L226 Difference]: Without dead ends: 490 [2020-10-12 18:11:49,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:11:49,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-12 18:11:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 484. [2020-10-12 18:11:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-12 18:11:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 802 transitions. [2020-10-12 18:11:49,312 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 802 transitions. Word has length 31 [2020-10-12 18:11:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:49,313 INFO L479 AbstractCegarLoop]: Abstraction has 484 states and 802 transitions. [2020-10-12 18:11:49,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:11:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 802 transitions. [2020-10-12 18:11:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:11:49,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:49,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:49,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:11:49,315 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:49,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:49,316 INFO L82 PathProgramCache]: Analyzing trace with hash 2038890699, now seen corresponding path program 1 times [2020-10-12 18:11:49,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:49,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263285684] [2020-10-12 18:11:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:49,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:49,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:49,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:11:49,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:49,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 18:11:49,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 18:11:49,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:11:49,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:49,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:49,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:49,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:49,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:49,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 18:11:49,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263285684] [2020-10-12 18:11:49,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:49,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:49,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237834188] [2020-10-12 18:11:49,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:49,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:49,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:49,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:49,482 INFO L87 Difference]: Start difference. First operand 484 states and 802 transitions. Second operand 4 states. [2020-10-12 18:11:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:49,708 INFO L93 Difference]: Finished difference Result 949 states and 1566 transitions. [2020-10-12 18:11:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:49,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-12 18:11:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:49,712 INFO L225 Difference]: With dead ends: 949 [2020-10-12 18:11:49,712 INFO L226 Difference]: Without dead ends: 495 [2020-10-12 18:11:49,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-12 18:11:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2020-10-12 18:11:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-10-12 18:11:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 794 transitions. [2020-10-12 18:11:49,732 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 794 transitions. Word has length 32 [2020-10-12 18:11:49,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:49,732 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 794 transitions. [2020-10-12 18:11:49,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:49,732 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 794 transitions. [2020-10-12 18:11:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 18:11:49,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:49,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:49,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:11:49,733 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:49,734 INFO L82 PathProgramCache]: Analyzing trace with hash 820851006, now seen corresponding path program 1 times [2020-10-12 18:11:49,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:49,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890063040] [2020-10-12 18:11:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:49,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:49,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:49,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:50,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:50,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:11:50,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:11:50,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-12 18:11:50,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:11:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:50,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:11:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:50,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:50,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:50,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 18:11:50,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890063040] [2020-10-12 18:11:50,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:11:50,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:11:50,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186122496] [2020-10-12 18:11:50,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:11:50,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:50,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:11:50,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:50,343 INFO L87 Difference]: Start difference. First operand 493 states and 794 transitions. Second operand 5 states. [2020-10-12 18:11:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:50,915 INFO L93 Difference]: Finished difference Result 656 states and 1049 transitions. [2020-10-12 18:11:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:11:50,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-10-12 18:11:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:50,922 INFO L225 Difference]: With dead ends: 656 [2020-10-12 18:11:50,923 INFO L226 Difference]: Without dead ends: 643 [2020-10-12 18:11:50,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:11:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-10-12 18:11:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 631. [2020-10-12 18:11:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-10-12 18:11:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1007 transitions. [2020-10-12 18:11:50,950 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1007 transitions. Word has length 40 [2020-10-12 18:11:50,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:50,950 INFO L479 AbstractCegarLoop]: Abstraction has 631 states and 1007 transitions. [2020-10-12 18:11:50,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:11:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1007 transitions. [2020-10-12 18:11:50,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 18:11:50,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:50,951 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:50,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:11:50,952 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:50,952 INFO L82 PathProgramCache]: Analyzing trace with hash -311979035, now seen corresponding path program 1 times [2020-10-12 18:11:50,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:50,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254031403] [2020-10-12 18:11:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:51,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:51,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 18:11:51,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:51,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 18:11:51,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:51,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:51,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 18:11:51,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:11:51,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:51,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:51,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:51,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:51,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:51,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 18:11:51,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254031403] [2020-10-12 18:11:51,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:51,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:51,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341644839] [2020-10-12 18:11:51,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:51,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:51,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:51,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:51,142 INFO L87 Difference]: Start difference. First operand 631 states and 1007 transitions. Second operand 4 states. [2020-10-12 18:11:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:51,329 INFO L93 Difference]: Finished difference Result 1127 states and 1817 transitions. [2020-10-12 18:11:51,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:51,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-12 18:11:51,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:51,334 INFO L225 Difference]: With dead ends: 1127 [2020-10-12 18:11:51,334 INFO L226 Difference]: Without dead ends: 545 [2020-10-12 18:11:51,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-12 18:11:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 543. [2020-10-12 18:11:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-12 18:11:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 866 transitions. [2020-10-12 18:11:51,357 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 866 transitions. Word has length 41 [2020-10-12 18:11:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:51,357 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 866 transitions. [2020-10-12 18:11:51,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 866 transitions. [2020-10-12 18:11:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 18:11:51,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:51,359 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:51,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:11:51,359 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:51,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2035215205, now seen corresponding path program 1 times [2020-10-12 18:11:51,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:51,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353637397] [2020-10-12 18:11:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:51,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:51,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:51,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:51,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:11:51,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-12 18:11:51,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:11:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:11:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:51,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:51,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:51,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:51,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:51,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:51,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:11:51,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:51,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:11:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 18:11:51,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353637397] [2020-10-12 18:11:51,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:11:51,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:11:51,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759467199] [2020-10-12 18:11:51,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:11:51,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:51,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:11:51,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:51,848 INFO L87 Difference]: Start difference. First operand 543 states and 866 transitions. Second operand 5 states. [2020-10-12 18:11:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:52,416 INFO L93 Difference]: Finished difference Result 557 states and 878 transitions. [2020-10-12 18:11:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:11:52,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-12 18:11:52,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:52,420 INFO L225 Difference]: With dead ends: 557 [2020-10-12 18:11:52,421 INFO L226 Difference]: Without dead ends: 545 [2020-10-12 18:11:52,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:11:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-10-12 18:11:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 543. [2020-10-12 18:11:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-12 18:11:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 840 transitions. [2020-10-12 18:11:52,439 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 840 transitions. Word has length 42 [2020-10-12 18:11:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:52,439 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 840 transitions. [2020-10-12 18:11:52,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:11:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 840 transitions. [2020-10-12 18:11:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 18:11:52,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:52,441 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:52,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:11:52,441 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:52,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1265387988, now seen corresponding path program 1 times [2020-10-12 18:11:52,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:52,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925231932] [2020-10-12 18:11:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:52,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:52,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:11:52,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:52,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 18:11:52,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:11:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:52,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:11:52,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:52,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:52,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:52,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:52,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:52,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:11:52,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925231932] [2020-10-12 18:11:52,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:11:52,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:11:52,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259479532] [2020-10-12 18:11:52,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:11:52,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:52,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:11:52,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:11:52,812 INFO L87 Difference]: Start difference. First operand 543 states and 840 transitions. Second operand 6 states. [2020-10-12 18:11:53,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:53,543 INFO L93 Difference]: Finished difference Result 553 states and 849 transitions. [2020-10-12 18:11:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:11:53,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 18:11:53,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:53,547 INFO L225 Difference]: With dead ends: 553 [2020-10-12 18:11:53,547 INFO L226 Difference]: Without dead ends: 551 [2020-10-12 18:11:53,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:11:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-12 18:11:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 544. [2020-10-12 18:11:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-12 18:11:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 841 transitions. [2020-10-12 18:11:53,565 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 841 transitions. Word has length 44 [2020-10-12 18:11:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:53,566 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 841 transitions. [2020-10-12 18:11:53,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:11:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 841 transitions. [2020-10-12 18:11:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 18:11:53,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:53,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:53,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:11:53,567 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:53,567 INFO L82 PathProgramCache]: Analyzing trace with hash -447084202, now seen corresponding path program 1 times [2020-10-12 18:11:53,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:53,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056614728] [2020-10-12 18:11:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:53,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:53,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 18:11:53,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:11:53,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 18:11:53,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 18:11:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 18:11:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:53,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:53,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:53,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:53,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:53,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:53,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:53,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:53,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:53,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:53,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 18:11:53,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056614728] [2020-10-12 18:11:53,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:53,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:53,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769455552] [2020-10-12 18:11:53,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:53,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:53,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:53,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:53,820 INFO L87 Difference]: Start difference. First operand 544 states and 841 transitions. Second operand 4 states. [2020-10-12 18:11:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:53,989 INFO L93 Difference]: Finished difference Result 1066 states and 1641 transitions. [2020-10-12 18:11:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:53,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-12 18:11:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:53,995 INFO L225 Difference]: With dead ends: 1066 [2020-10-12 18:11:53,995 INFO L226 Difference]: Without dead ends: 571 [2020-10-12 18:11:53,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-10-12 18:11:54,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 569. [2020-10-12 18:11:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-12 18:11:54,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 856 transitions. [2020-10-12 18:11:54,026 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 856 transitions. Word has length 45 [2020-10-12 18:11:54,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:54,026 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 856 transitions. [2020-10-12 18:11:54,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 856 transitions. [2020-10-12 18:11:54,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 18:11:54,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:54,028 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:54,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:11:54,028 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:54,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1882634818, now seen corresponding path program 1 times [2020-10-12 18:11:54,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:54,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752428864] [2020-10-12 18:11:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:54,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:54,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:56,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:56,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:11:56,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:11:56,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2071 [2020-10-12 18:11:56,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:11:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:11:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:11:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:56,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:56,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:56,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:56,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 18:11:56,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752428864] [2020-10-12 18:11:56,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:11:56,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:11:56,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534998275] [2020-10-12 18:11:56,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:11:56,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:56,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:11:56,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:11:56,242 INFO L87 Difference]: Start difference. First operand 569 states and 856 transitions. Second operand 7 states. [2020-10-12 18:11:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:56,946 INFO L93 Difference]: Finished difference Result 1189 states and 1786 transitions. [2020-10-12 18:11:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:11:56,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-12 18:11:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:56,951 INFO L225 Difference]: With dead ends: 1189 [2020-10-12 18:11:56,952 INFO L226 Difference]: Without dead ends: 691 [2020-10-12 18:11:56,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:11:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-12 18:11:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 603. [2020-10-12 18:11:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-12 18:11:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 898 transitions. [2020-10-12 18:11:56,989 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 898 transitions. Word has length 55 [2020-10-12 18:11:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:56,989 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 898 transitions. [2020-10-12 18:11:56,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:11:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 898 transitions. [2020-10-12 18:11:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 18:11:56,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:56,991 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:56,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:11:56,992 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:56,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:56,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1711267900, now seen corresponding path program 1 times [2020-10-12 18:11:56,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:56,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997835018] [2020-10-12 18:11:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:57,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:57,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:57,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:11:57,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:11:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-12 18:11:57,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:11:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:11:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:57,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:57,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:57,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:57,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:57,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 18:11:57,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997835018] [2020-10-12 18:11:57,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:11:57,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:11:57,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990317750] [2020-10-12 18:11:57,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:11:57,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:57,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:11:57,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:11:57,811 INFO L87 Difference]: Start difference. First operand 603 states and 898 transitions. Second operand 6 states. [2020-10-12 18:11:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:58,608 INFO L93 Difference]: Finished difference Result 684 states and 1011 transitions. [2020-10-12 18:11:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:11:58,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-12 18:11:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:58,613 INFO L225 Difference]: With dead ends: 684 [2020-10-12 18:11:58,613 INFO L226 Difference]: Without dead ends: 674 [2020-10-12 18:11:58,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:11:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2020-10-12 18:11:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 662. [2020-10-12 18:11:58,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-10-12 18:11:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 978 transitions. [2020-10-12 18:11:58,670 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 978 transitions. Word has length 55 [2020-10-12 18:11:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:58,670 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 978 transitions. [2020-10-12 18:11:58,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:11:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 978 transitions. [2020-10-12 18:11:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 18:11:58,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:58,671 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:58,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:11:58,672 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:58,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:58,672 INFO L82 PathProgramCache]: Analyzing trace with hash 810326805, now seen corresponding path program 1 times [2020-10-12 18:11:58,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:58,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628573899] [2020-10-12 18:11:58,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:58,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:58,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:58,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 18:11:58,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 18:11:58,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:11:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 18:11:58,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:11:58,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:11:58,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:58,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:58,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:58,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:58,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:58,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:58,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:58,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 18:11:58,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628573899] [2020-10-12 18:11:58,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:58,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 18:11:58,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292661681] [2020-10-12 18:11:58,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 18:11:58,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:58,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 18:11:58,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 18:11:58,846 INFO L87 Difference]: Start difference. First operand 662 states and 978 transitions. Second operand 4 states. [2020-10-12 18:11:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:59,053 INFO L93 Difference]: Finished difference Result 818 states and 1206 transitions. [2020-10-12 18:11:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 18:11:59,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-12 18:11:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:59,055 INFO L225 Difference]: With dead ends: 818 [2020-10-12 18:11:59,055 INFO L226 Difference]: Without dead ends: 265 [2020-10-12 18:11:59,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:11:59,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-12 18:11:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 241. [2020-10-12 18:11:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-12 18:11:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 341 transitions. [2020-10-12 18:11:59,067 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 341 transitions. Word has length 57 [2020-10-12 18:11:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:59,068 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 341 transitions. [2020-10-12 18:11:59,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 18:11:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 341 transitions. [2020-10-12 18:11:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:11:59,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:59,069 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:59,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:11:59,069 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash 933833257, now seen corresponding path program 1 times [2020-10-12 18:11:59,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:59,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582164012] [2020-10-12 18:11:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:59,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:59,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 18:11:59,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-12 18:11:59,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:11:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:11:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:11:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:11:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:11:59,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:11:59,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:11:59,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:11:59,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:11:59,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:11:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:11:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:11:59,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:11:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:11:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 18:11:59,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582164012] [2020-10-12 18:11:59,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:11:59,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:11:59,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673419125] [2020-10-12 18:11:59,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:11:59,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:11:59,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:11:59,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:11:59,474 INFO L87 Difference]: Start difference. First operand 241 states and 341 transitions. Second operand 6 states. [2020-10-12 18:11:59,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:11:59,908 INFO L93 Difference]: Finished difference Result 337 states and 477 transitions. [2020-10-12 18:11:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:11:59,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-12 18:11:59,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:11:59,911 INFO L225 Difference]: With dead ends: 337 [2020-10-12 18:11:59,911 INFO L226 Difference]: Without dead ends: 331 [2020-10-12 18:11:59,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:11:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-12 18:11:59,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 323. [2020-10-12 18:11:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-12 18:11:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 461 transitions. [2020-10-12 18:11:59,934 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 461 transitions. Word has length 59 [2020-10-12 18:11:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:11:59,934 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 461 transitions. [2020-10-12 18:11:59,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:11:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 461 transitions. [2020-10-12 18:11:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 18:11:59,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:11:59,936 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:11:59,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:11:59,937 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:11:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:11:59,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1104488738, now seen corresponding path program 1 times [2020-10-12 18:11:59,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:11:59,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941331226] [2020-10-12 18:11:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:11:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:11:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:00,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:00,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:12:00,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 18:12:00,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:12:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:12:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:00,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:00,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:00,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:00,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:00,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:00,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:00,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941331226] [2020-10-12 18:12:00,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:00,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:12:00,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438924612] [2020-10-12 18:12:00,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:12:00,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:00,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:12:00,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:12:00,386 INFO L87 Difference]: Start difference. First operand 323 states and 461 transitions. Second operand 7 states. [2020-10-12 18:12:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:01,043 INFO L93 Difference]: Finished difference Result 325 states and 462 transitions. [2020-10-12 18:12:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:12:01,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-12 18:12:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:01,046 INFO L225 Difference]: With dead ends: 325 [2020-10-12 18:12:01,046 INFO L226 Difference]: Without dead ends: 323 [2020-10-12 18:12:01,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:12:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-12 18:12:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-10-12 18:12:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-12 18:12:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 460 transitions. [2020-10-12 18:12:01,060 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 460 transitions. Word has length 60 [2020-10-12 18:12:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:01,061 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 460 transitions. [2020-10-12 18:12:01,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:12:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 460 transitions. [2020-10-12 18:12:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 18:12:01,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:01,062 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:01,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:12:01,062 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:01,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:01,063 INFO L82 PathProgramCache]: Analyzing trace with hash 855434068, now seen corresponding path program 1 times [2020-10-12 18:12:01,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:01,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890399833] [2020-10-12 18:12:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:01,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:01,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:01,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:12:01,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:12:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-12 18:12:01,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:12:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:01,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:12:01,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:01,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:01,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:01,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:01,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:12:01,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:01,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890399833] [2020-10-12 18:12:01,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:01,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:12:01,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032156966] [2020-10-12 18:12:01,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:12:01,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:12:01,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:12:01,807 INFO L87 Difference]: Start difference. First operand 323 states and 460 transitions. Second operand 8 states. [2020-10-12 18:12:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:02,801 INFO L93 Difference]: Finished difference Result 326 states and 463 transitions. [2020-10-12 18:12:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:12:02,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-12 18:12:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:02,804 INFO L225 Difference]: With dead ends: 326 [2020-10-12 18:12:02,804 INFO L226 Difference]: Without dead ends: 324 [2020-10-12 18:12:02,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:12:02,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-12 18:12:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2020-10-12 18:12:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-12 18:12:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 461 transitions. [2020-10-12 18:12:02,822 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 461 transitions. Word has length 67 [2020-10-12 18:12:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:02,823 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 461 transitions. [2020-10-12 18:12:02,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:12:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 461 transitions. [2020-10-12 18:12:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:12:02,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:02,824 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:02,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:12:02,824 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:02,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1201928326, now seen corresponding path program 1 times [2020-10-12 18:12:02,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:02,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825836270] [2020-10-12 18:12:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:03,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:03,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 18:12:03,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:03,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-12 18:12:03,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:12:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:12:03,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:03,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:03,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:03,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:03,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:03,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:03,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 38 proven. 50 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 18:12:03,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825836270] [2020-10-12 18:12:03,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:03,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:12:03,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866486631] [2020-10-12 18:12:03,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:12:03,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:03,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:12:03,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:12:03,392 INFO L87 Difference]: Start difference. First operand 324 states and 461 transitions. Second operand 7 states. [2020-10-12 18:12:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:04,342 INFO L93 Difference]: Finished difference Result 645 states and 923 transitions. [2020-10-12 18:12:04,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:12:04,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-12 18:12:04,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:04,346 INFO L225 Difference]: With dead ends: 645 [2020-10-12 18:12:04,346 INFO L226 Difference]: Without dead ends: 513 [2020-10-12 18:12:04,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:12:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-12 18:12:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 364. [2020-10-12 18:12:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 18:12:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 523 transitions. [2020-10-12 18:12:04,368 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 523 transitions. Word has length 77 [2020-10-12 18:12:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:04,369 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 523 transitions. [2020-10-12 18:12:04,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:12:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 523 transitions. [2020-10-12 18:12:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:12:04,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:04,370 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:04,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:12:04,370 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash 808901316, now seen corresponding path program 1 times [2020-10-12 18:12:04,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:04,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088609370] [2020-10-12 18:12:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:04,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:05,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:05,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 18:12:05,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:12:05,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-12 18:12:05,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:05,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:12:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:05,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:12:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:05,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:05,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:05,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:05,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:05,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:05,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:05,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:05,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:05,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:05,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088609370] [2020-10-12 18:12:05,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:05,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:12:05,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629467241] [2020-10-12 18:12:05,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:12:05,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:05,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:12:05,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:12:05,839 INFO L87 Difference]: Start difference. First operand 364 states and 523 transitions. Second operand 9 states. [2020-10-12 18:12:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:06,947 INFO L93 Difference]: Finished difference Result 386 states and 553 transitions. [2020-10-12 18:12:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:12:06,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-12 18:12:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:06,954 INFO L225 Difference]: With dead ends: 386 [2020-10-12 18:12:06,954 INFO L226 Difference]: Without dead ends: 383 [2020-10-12 18:12:06,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:12:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-12 18:12:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2020-10-12 18:12:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-12 18:12:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 549 transitions. [2020-10-12 18:12:06,976 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 549 transitions. Word has length 77 [2020-10-12 18:12:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:06,977 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 549 transitions. [2020-10-12 18:12:06,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:12:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 549 transitions. [2020-10-12 18:12:06,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 18:12:06,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:06,978 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:06,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:12:06,978 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:06,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:06,979 INFO L82 PathProgramCache]: Analyzing trace with hash 704934839, now seen corresponding path program 1 times [2020-10-12 18:12:06,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:06,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751444778] [2020-10-12 18:12:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:07,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:08,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:08,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-12 18:12:08,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:12:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1167 [2020-10-12 18:12:08,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:12:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:12:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:12:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:08,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:08,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:08,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 44 proven. 43 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 18:12:08,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751444778] [2020-10-12 18:12:08,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:08,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:12:08,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112611250] [2020-10-12 18:12:08,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:12:08,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:08,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:12:08,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:12:08,354 INFO L87 Difference]: Start difference. First operand 383 states and 549 transitions. Second operand 6 states. [2020-10-12 18:12:09,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:09,145 INFO L93 Difference]: Finished difference Result 486 states and 688 transitions. [2020-10-12 18:12:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:12:09,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-10-12 18:12:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:09,147 INFO L225 Difference]: With dead ends: 486 [2020-10-12 18:12:09,147 INFO L226 Difference]: Without dead ends: 309 [2020-10-12 18:12:09,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:12:09,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-12 18:12:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 298. [2020-10-12 18:12:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-12 18:12:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 415 transitions. [2020-10-12 18:12:09,159 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 415 transitions. Word has length 87 [2020-10-12 18:12:09,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:09,159 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 415 transitions. [2020-10-12 18:12:09,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:12:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 415 transitions. [2020-10-12 18:12:09,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 18:12:09,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:09,161 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:09,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:12:09,161 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:09,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1100197245, now seen corresponding path program 1 times [2020-10-12 18:12:09,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:09,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411626790] [2020-10-12 18:12:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:09,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 18:12:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 729 [2020-10-12 18:12:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:12:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:12:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:10,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:10,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:10,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:10,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:10,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:10,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411626790] [2020-10-12 18:12:10,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:10,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:12:10,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934605645] [2020-10-12 18:12:10,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:12:10,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:10,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:12:10,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:12:10,215 INFO L87 Difference]: Start difference. First operand 298 states and 415 transitions. Second operand 10 states. [2020-10-12 18:12:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:11,568 INFO L93 Difference]: Finished difference Result 322 states and 447 transitions. [2020-10-12 18:12:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:12:11,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-10-12 18:12:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:11,571 INFO L225 Difference]: With dead ends: 322 [2020-10-12 18:12:11,571 INFO L226 Difference]: Without dead ends: 320 [2020-10-12 18:12:11,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:12:11,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-12 18:12:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2020-10-12 18:12:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-12 18:12:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 445 transitions. [2020-10-12 18:12:11,587 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 445 transitions. Word has length 90 [2020-10-12 18:12:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:11,588 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 445 transitions. [2020-10-12 18:12:11,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:12:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 445 transitions. [2020-10-12 18:12:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 18:12:11,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:11,590 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:11,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 18:12:11,590 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:11,590 INFO L82 PathProgramCache]: Analyzing trace with hash -669250513, now seen corresponding path program 1 times [2020-10-12 18:12:11,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:11,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537093113] [2020-10-12 18:12:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:12,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:12,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 18:12:12,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:12,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-12 18:12:12,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:12,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:12:12,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:12,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 18:12:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:12,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:12,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 24 proven. 170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:12,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537093113] [2020-10-12 18:12:12,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:12,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:12:12,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439685321] [2020-10-12 18:12:12,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:12:12,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:12,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:12:12,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:12:12,806 INFO L87 Difference]: Start difference. First operand 320 states and 445 transitions. Second operand 11 states. [2020-10-12 18:12:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:14,358 INFO L93 Difference]: Finished difference Result 344 states and 477 transitions. [2020-10-12 18:12:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:12:14,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-12 18:12:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:14,361 INFO L225 Difference]: With dead ends: 344 [2020-10-12 18:12:14,361 INFO L226 Difference]: Without dead ends: 342 [2020-10-12 18:12:14,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:12:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-12 18:12:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2020-10-12 18:12:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 18:12:14,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 475 transitions. [2020-10-12 18:12:14,376 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 475 transitions. Word has length 106 [2020-10-12 18:12:14,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:14,376 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 475 transitions. [2020-10-12 18:12:14,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:12:14,376 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 475 transitions. [2020-10-12 18:12:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 18:12:14,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:14,378 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:14,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 18:12:14,378 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:14,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:14,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1267384093, now seen corresponding path program 2 times [2020-10-12 18:12:14,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:14,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068981655] [2020-10-12 18:12:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:14,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:17,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:17,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 18:12:17,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:12:17,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2829 [2020-10-12 18:12:17,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:12:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 18:12:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:17,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:17,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:17,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:17,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 27 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:17,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068981655] [2020-10-12 18:12:17,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:17,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:12:17,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331413484] [2020-10-12 18:12:17,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:12:17,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:17,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:12:17,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:12:17,658 INFO L87 Difference]: Start difference. First operand 342 states and 475 transitions. Second operand 12 states. [2020-10-12 18:12:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:20,080 INFO L93 Difference]: Finished difference Result 361 states and 501 transitions. [2020-10-12 18:12:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:12:20,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-10-12 18:12:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:20,086 INFO L225 Difference]: With dead ends: 361 [2020-10-12 18:12:20,086 INFO L226 Difference]: Without dead ends: 359 [2020-10-12 18:12:20,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:12:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-12 18:12:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2020-10-12 18:12:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-12 18:12:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 499 transitions. [2020-10-12 18:12:20,100 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 499 transitions. Word has length 113 [2020-10-12 18:12:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:20,101 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 499 transitions. [2020-10-12 18:12:20,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:12:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 499 transitions. [2020-10-12 18:12:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 18:12:20,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:20,103 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:20,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 18:12:20,103 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1815351467, now seen corresponding path program 2 times [2020-10-12 18:12:20,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:20,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171815329] [2020-10-12 18:12:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:21,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 18:12:21,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-10-12 18:12:21,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:12:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:21,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 18:12:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:21,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:21,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:21,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:21,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:21,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:21,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:21,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 68 proven. 206 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-12 18:12:21,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171815329] [2020-10-12 18:12:21,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:21,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:12:21,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968880282] [2020-10-12 18:12:21,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:12:21,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:21,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:12:21,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:12:21,370 INFO L87 Difference]: Start difference. First operand 359 states and 499 transitions. Second operand 9 states. [2020-10-12 18:12:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:22,396 INFO L93 Difference]: Finished difference Result 495 states and 687 transitions. [2020-10-12 18:12:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:12:22,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-10-12 18:12:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:22,399 INFO L225 Difference]: With dead ends: 495 [2020-10-12 18:12:22,400 INFO L226 Difference]: Without dead ends: 408 [2020-10-12 18:12:22,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:12:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-12 18:12:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 359. [2020-10-12 18:12:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-12 18:12:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 499 transitions. [2020-10-12 18:12:22,413 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 499 transitions. Word has length 123 [2020-10-12 18:12:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:22,414 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 499 transitions. [2020-10-12 18:12:22,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:12:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 499 transitions. [2020-10-12 18:12:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-12 18:12:22,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:22,416 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:22,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 18:12:22,416 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:22,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:22,416 INFO L82 PathProgramCache]: Analyzing trace with hash 2086588819, now seen corresponding path program 2 times [2020-10-12 18:12:22,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:22,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380558718] [2020-10-12 18:12:22,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:22,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:24,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:25,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:25,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 18:12:25,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:12:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2861 [2020-10-12 18:12:25,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:12:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 18:12:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:25,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:25,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:25,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:12:25,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:25,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 30 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:25,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380558718] [2020-10-12 18:12:25,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:25,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:12:25,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696257964] [2020-10-12 18:12:25,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:12:25,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:25,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:12:25,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:12:25,705 INFO L87 Difference]: Start difference. First operand 359 states and 499 transitions. Second operand 13 states. [2020-10-12 18:12:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:28,046 INFO L93 Difference]: Finished difference Result 380 states and 527 transitions. [2020-10-12 18:12:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:12:28,047 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 123 [2020-10-12 18:12:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:28,049 INFO L225 Difference]: With dead ends: 380 [2020-10-12 18:12:28,049 INFO L226 Difference]: Without dead ends: 378 [2020-10-12 18:12:28,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:12:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-12 18:12:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2020-10-12 18:12:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-10-12 18:12:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 525 transitions. [2020-10-12 18:12:28,063 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 525 transitions. Word has length 123 [2020-10-12 18:12:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:28,063 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 525 transitions. [2020-10-12 18:12:28,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:12:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 525 transitions. [2020-10-12 18:12:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-12 18:12:28,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:28,065 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:28,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 18:12:28,066 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:28,066 INFO L82 PathProgramCache]: Analyzing trace with hash -287211762, now seen corresponding path program 2 times [2020-10-12 18:12:28,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:28,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973857705] [2020-10-12 18:12:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:29,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:29,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-12 18:12:29,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:29,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-10-12 18:12:29,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:12:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:29,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 18:12:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:29,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:29,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:29,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:29,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:29,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:29,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:29,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:29,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:29,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:12:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 33 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:29,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973857705] [2020-10-12 18:12:29,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:29,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:12:29,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320750024] [2020-10-12 18:12:29,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:12:29,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:29,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:12:29,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:12:29,878 INFO L87 Difference]: Start difference. First operand 378 states and 525 transitions. Second operand 14 states. [2020-10-12 18:12:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:32,897 INFO L93 Difference]: Finished difference Result 402 states and 557 transitions. [2020-10-12 18:12:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:12:32,900 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 136 [2020-10-12 18:12:32,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:32,902 INFO L225 Difference]: With dead ends: 402 [2020-10-12 18:12:32,902 INFO L226 Difference]: Without dead ends: 400 [2020-10-12 18:12:32,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:12:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-10-12 18:12:32,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2020-10-12 18:12:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-10-12 18:12:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 555 transitions. [2020-10-12 18:12:32,918 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 555 transitions. Word has length 136 [2020-10-12 18:12:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:32,918 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 555 transitions. [2020-10-12 18:12:32,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:12:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 555 transitions. [2020-10-12 18:12:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 18:12:32,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:32,920 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:32,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 18:12:32,921 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:32,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1445028928, now seen corresponding path program 2 times [2020-10-12 18:12:32,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:32,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547344692] [2020-10-12 18:12:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:34,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:34,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 18:12:34,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1461 [2020-10-12 18:12:34,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:12:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 18:12:34,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:34,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:34,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:34,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:34,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:34,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:34,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 36 proven. 417 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:35,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547344692] [2020-10-12 18:12:35,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:35,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:12:35,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707795293] [2020-10-12 18:12:35,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:12:35,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:35,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:12:35,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:12:35,023 INFO L87 Difference]: Start difference. First operand 400 states and 555 transitions. Second operand 15 states. [2020-10-12 18:12:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:38,023 INFO L93 Difference]: Finished difference Result 424 states and 587 transitions. [2020-10-12 18:12:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:12:38,028 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 152 [2020-10-12 18:12:38,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:38,030 INFO L225 Difference]: With dead ends: 424 [2020-10-12 18:12:38,030 INFO L226 Difference]: Without dead ends: 422 [2020-10-12 18:12:38,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:12:38,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-10-12 18:12:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2020-10-12 18:12:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-12 18:12:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 585 transitions. [2020-10-12 18:12:38,045 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 585 transitions. Word has length 152 [2020-10-12 18:12:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:38,045 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 585 transitions. [2020-10-12 18:12:38,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:12:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 585 transitions. [2020-10-12 18:12:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 18:12:38,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:38,048 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:38,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 18:12:38,048 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:38,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1661877298, now seen corresponding path program 3 times [2020-10-12 18:12:38,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:38,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942422890] [2020-10-12 18:12:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:41,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:41,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 18:12:41,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:12:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3642 [2020-10-12 18:12:41,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:12:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 18:12:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 18:12:41,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:42,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:42,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:42,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:42,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:42,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:42,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 90 proven. 282 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 18:12:42,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942422890] [2020-10-12 18:12:42,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:42,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:12:42,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496219129] [2020-10-12 18:12:42,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:12:42,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:42,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:12:42,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:12:42,273 INFO L87 Difference]: Start difference. First operand 422 states and 585 transitions. Second operand 8 states. [2020-10-12 18:12:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:43,598 INFO L93 Difference]: Finished difference Result 446 states and 601 transitions. [2020-10-12 18:12:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:12:43,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 159 [2020-10-12 18:12:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:43,601 INFO L225 Difference]: With dead ends: 446 [2020-10-12 18:12:43,601 INFO L226 Difference]: Without dead ends: 444 [2020-10-12 18:12:43,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:12:43,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-12 18:12:43,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 422. [2020-10-12 18:12:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-12 18:12:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 583 transitions. [2020-10-12 18:12:43,617 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 583 transitions. Word has length 159 [2020-10-12 18:12:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:43,617 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 583 transitions. [2020-10-12 18:12:43,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:12:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 583 transitions. [2020-10-12 18:12:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 18:12:43,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:43,620 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:43,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 18:12:43,620 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:43,621 INFO L82 PathProgramCache]: Analyzing trace with hash 305812452, now seen corresponding path program 3 times [2020-10-12 18:12:43,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:43,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469976950] [2020-10-12 18:12:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:45,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:45,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 18:12:45,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:45,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1887 [2020-10-12 18:12:45,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:45,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:12:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 18:12:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:45,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:45,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:45,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:45,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:45,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:45,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 98 proven. 470 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 18:12:45,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469976950] [2020-10-12 18:12:45,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:45,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:12:45,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398330315] [2020-10-12 18:12:45,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:12:45,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:45,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:12:45,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:12:45,699 INFO L87 Difference]: Start difference. First operand 422 states and 583 transitions. Second operand 11 states. [2020-10-12 18:12:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:47,048 INFO L93 Difference]: Finished difference Result 575 states and 794 transitions. [2020-10-12 18:12:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:12:47,049 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 169 [2020-10-12 18:12:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:47,052 INFO L225 Difference]: With dead ends: 575 [2020-10-12 18:12:47,052 INFO L226 Difference]: Without dead ends: 488 [2020-10-12 18:12:47,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:12:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-12 18:12:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 439. [2020-10-12 18:12:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-12 18:12:47,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 607 transitions. [2020-10-12 18:12:47,069 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 607 transitions. Word has length 169 [2020-10-12 18:12:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:47,069 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 607 transitions. [2020-10-12 18:12:47,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:12:47,069 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 607 transitions. [2020-10-12 18:12:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 18:12:47,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:47,071 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:47,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 18:12:47,071 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:47,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:47,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1596376353, now seen corresponding path program 3 times [2020-10-12 18:12:47,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:47,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143492770] [2020-10-12 18:12:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:49,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:12:50,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2791 [2020-10-12 18:12:50,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:12:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 18:12:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:50,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:50,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:50,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:50,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:12:50,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 45 proven. 656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:50,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143492770] [2020-10-12 18:12:50,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:50,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:12:50,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900799689] [2020-10-12 18:12:50,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:12:50,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:50,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:12:50,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:12:50,592 INFO L87 Difference]: Start difference. First operand 439 states and 607 transitions. Second operand 18 states. [2020-10-12 18:12:55,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:12:55,954 INFO L93 Difference]: Finished difference Result 482 states and 665 transitions. [2020-10-12 18:12:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:12:55,955 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 182 [2020-10-12 18:12:55,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:12:55,958 INFO L225 Difference]: With dead ends: 482 [2020-10-12 18:12:55,958 INFO L226 Difference]: Without dead ends: 480 [2020-10-12 18:12:55,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:12:55,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-12 18:12:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2020-10-12 18:12:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2020-10-12 18:12:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 663 transitions. [2020-10-12 18:12:55,978 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 663 transitions. Word has length 182 [2020-10-12 18:12:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:12:55,979 INFO L479 AbstractCegarLoop]: Abstraction has 480 states and 663 transitions. [2020-10-12 18:12:55,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:12:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 663 transitions. [2020-10-12 18:12:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-12 18:12:55,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:12:55,980 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 12, 12, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:12:55,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 18:12:55,981 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:12:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:12:55,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2108593553, now seen corresponding path program 3 times [2020-10-12 18:12:55,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:12:55,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958702600] [2020-10-12 18:12:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:12:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:59,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:59,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 18:12:59,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3185 [2020-10-12 18:12:59,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:12:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:12:59,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-12 18:12:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:59,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:12:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:12:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:12:59,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:12:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:12:59,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:12:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:12:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:12:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:12:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:12:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:12:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:12:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 48 proven. 772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:12:59,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958702600] [2020-10-12 18:12:59,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:12:59,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:12:59,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788453476] [2020-10-12 18:12:59,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:12:59,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:12:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:12:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:12:59,760 INFO L87 Difference]: Start difference. First operand 480 states and 663 transitions. Second operand 19 states. [2020-10-12 18:13:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:13:05,390 INFO L93 Difference]: Finished difference Result 504 states and 695 transitions. [2020-10-12 18:13:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:13:05,390 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 198 [2020-10-12 18:13:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:13:05,393 INFO L225 Difference]: With dead ends: 504 [2020-10-12 18:13:05,394 INFO L226 Difference]: Without dead ends: 502 [2020-10-12 18:13:05,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:13:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-12 18:13:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2020-10-12 18:13:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-10-12 18:13:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 693 transitions. [2020-10-12 18:13:05,407 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 693 transitions. Word has length 198 [2020-10-12 18:13:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:13:05,407 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 693 transitions. [2020-10-12 18:13:05,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:13:05,407 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 693 transitions. [2020-10-12 18:13:05,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-12 18:13:05,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:13:05,409 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 13, 13, 8, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:13:05,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 18:13:05,410 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:13:05,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:13:05,410 INFO L82 PathProgramCache]: Analyzing trace with hash -699066829, now seen corresponding path program 4 times [2020-10-12 18:13:05,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:13:05,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169427126] [2020-10-12 18:13:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:13:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:09,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-12 18:13:09,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3739 [2020-10-12 18:13:09,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:13:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:13:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-12 18:13:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:09,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:13:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:09,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:09,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:13:09,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:13:09,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:13:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:09,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:13:09,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 128 proven. 842 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 18:13:09,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169427126] [2020-10-12 18:13:09,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:13:09,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:13:09,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434910854] [2020-10-12 18:13:09,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:13:09,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:13:09,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:13:09,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:13:09,395 INFO L87 Difference]: Start difference. First operand 502 states and 693 transitions. Second operand 13 states. [2020-10-12 18:13:11,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:13:11,027 INFO L93 Difference]: Finished difference Result 655 states and 904 transitions. [2020-10-12 18:13:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:13:11,028 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 215 [2020-10-12 18:13:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:13:11,031 INFO L225 Difference]: With dead ends: 655 [2020-10-12 18:13:11,031 INFO L226 Difference]: Without dead ends: 568 [2020-10-12 18:13:11,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:13:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-12 18:13:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 519. [2020-10-12 18:13:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-10-12 18:13:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 717 transitions. [2020-10-12 18:13:11,047 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 717 transitions. Word has length 215 [2020-10-12 18:13:11,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:13:11,047 INFO L479 AbstractCegarLoop]: Abstraction has 519 states and 717 transitions. [2020-10-12 18:13:11,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:13:11,048 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 717 transitions. [2020-10-12 18:13:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-12 18:13:11,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:13:11,049 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 14, 14, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:13:11,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 18:13:11,050 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:13:11,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:13:11,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1657081616, now seen corresponding path program 4 times [2020-10-12 18:13:11,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:13:11,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928627376] [2020-10-12 18:13:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:13:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:11,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:16,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:16,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-12 18:13:16,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:13:16,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:13:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:13:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-12 18:13:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:13:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:16,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:16,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:13:16,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:16,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:13:16,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:16,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:13:16,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:16,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:13:16,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 57 proven. 1086 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:13:16,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928627376] [2020-10-12 18:13:16,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:13:16,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:13:16,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369984416] [2020-10-12 18:13:16,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:13:16,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:13:16,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:13:16,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:13:16,987 INFO L87 Difference]: Start difference. First operand 519 states and 717 transitions. Second operand 22 states. [2020-10-12 18:13:24,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:13:25,000 INFO L93 Difference]: Finished difference Result 562 states and 775 transitions. [2020-10-12 18:13:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:13:25,001 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 228 [2020-10-12 18:13:25,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:13:25,005 INFO L225 Difference]: With dead ends: 562 [2020-10-12 18:13:25,005 INFO L226 Difference]: Without dead ends: 560 [2020-10-12 18:13:25,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:13:25,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-10-12 18:13:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2020-10-12 18:13:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-12 18:13:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 773 transitions. [2020-10-12 18:13:25,023 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 773 transitions. Word has length 228 [2020-10-12 18:13:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:13:25,023 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 773 transitions. [2020-10-12 18:13:25,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:13:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 773 transitions. [2020-10-12 18:13:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-12 18:13:25,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:13:25,025 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 15, 15, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:13:25,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 18:13:25,026 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:13:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:13:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1221850718, now seen corresponding path program 4 times [2020-10-12 18:13:25,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:13:25,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705459809] [2020-10-12 18:13:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:13:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:30,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:30,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-12 18:13:30,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 18:13:30,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:13:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:13:30,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-12 18:13:30,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:30,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:13:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:30,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:30,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:30,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:13:30,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:30,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:13:30,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:13:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:13:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1295 backedges. 60 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:13:30,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705459809] [2020-10-12 18:13:30,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:13:30,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:13:30,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994712533] [2020-10-12 18:13:30,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:13:30,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:13:30,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:13:30,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:13:30,871 INFO L87 Difference]: Start difference. First operand 560 states and 773 transitions. Second operand 23 states. [2020-10-12 18:13:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:13:39,619 INFO L93 Difference]: Finished difference Result 584 states and 805 transitions. [2020-10-12 18:13:39,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:13:39,620 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 244 [2020-10-12 18:13:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:13:39,624 INFO L225 Difference]: With dead ends: 584 [2020-10-12 18:13:39,624 INFO L226 Difference]: Without dead ends: 582 [2020-10-12 18:13:39,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:13:39,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-10-12 18:13:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2020-10-12 18:13:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-10-12 18:13:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 803 transitions. [2020-10-12 18:13:39,645 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 803 transitions. Word has length 244 [2020-10-12 18:13:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:13:39,646 INFO L479 AbstractCegarLoop]: Abstraction has 582 states and 803 transitions. [2020-10-12 18:13:39,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:13:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 803 transitions. [2020-10-12 18:13:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-12 18:13:39,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:13:39,648 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 16, 16, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:13:39,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 18:13:39,649 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:13:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:13:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1318987330, now seen corresponding path program 5 times [2020-10-12 18:13:39,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:13:39,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656044446] [2020-10-12 18:13:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:13:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:44,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-12 18:13:44,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-12 18:13:44,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:13:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:13:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-12 18:13:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:44,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:13:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:44,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:45,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:13:45,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:13:45,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:13:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:13:45,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1530 backedges. 158 proven. 1322 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 18:13:45,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656044446] [2020-10-12 18:13:45,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:13:45,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:13:45,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9271958] [2020-10-12 18:13:45,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:13:45,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:13:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:13:45,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:13:45,046 INFO L87 Difference]: Start difference. First operand 582 states and 803 transitions. Second operand 15 states. [2020-10-12 18:13:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:13:47,050 INFO L93 Difference]: Finished difference Result 735 states and 1014 transitions. [2020-10-12 18:13:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:13:47,051 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 261 [2020-10-12 18:13:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:13:47,055 INFO L225 Difference]: With dead ends: 735 [2020-10-12 18:13:47,055 INFO L226 Difference]: Without dead ends: 648 [2020-10-12 18:13:47,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:13:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-12 18:13:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 599. [2020-10-12 18:13:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-10-12 18:13:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 827 transitions. [2020-10-12 18:13:47,074 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 827 transitions. Word has length 261 [2020-10-12 18:13:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:13:47,074 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 827 transitions. [2020-10-12 18:13:47,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:13:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 827 transitions. [2020-10-12 18:13:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-12 18:13:47,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:13:47,077 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 17, 17, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:13:47,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 18:13:47,077 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:13:47,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:13:47,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1138052799, now seen corresponding path program 5 times [2020-10-12 18:13:47,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:13:47,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103961924] [2020-10-12 18:13:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:13:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:47,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:52,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:52,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-12 18:13:52,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:52,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5156 [2020-10-12 18:13:52,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:13:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:13:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-12 18:13:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:13:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:13:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:13:53,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:13:53,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:13:53,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:13:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:13:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:13:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:13:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:13:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:13:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:13:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 69 proven. 1624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:13:53,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103961924] [2020-10-12 18:13:53,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:13:53,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 18:13:53,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630301917] [2020-10-12 18:13:53,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 18:13:53,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:13:53,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 18:13:53,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:13:53,445 INFO L87 Difference]: Start difference. First operand 599 states and 827 transitions. Second operand 26 states. [2020-10-12 18:14:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:05,109 INFO L93 Difference]: Finished difference Result 642 states and 885 transitions. [2020-10-12 18:14:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 18:14:05,109 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 274 [2020-10-12 18:14:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:05,114 INFO L225 Difference]: With dead ends: 642 [2020-10-12 18:14:05,114 INFO L226 Difference]: Without dead ends: 640 [2020-10-12 18:14:05,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 18:14:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-12 18:14:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2020-10-12 18:14:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-12 18:14:05,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 883 transitions. [2020-10-12 18:14:05,138 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 883 transitions. Word has length 274 [2020-10-12 18:14:05,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:05,139 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 883 transitions. [2020-10-12 18:14:05,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 18:14:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 883 transitions. [2020-10-12 18:14:05,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 18:14:05,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:05,142 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:05,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 18:14:05,142 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:05,142 INFO L82 PathProgramCache]: Analyzing trace with hash 73074675, now seen corresponding path program 5 times [2020-10-12 18:14:05,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:05,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747449992] [2020-10-12 18:14:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:10,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-12 18:14:10,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-12 18:14:10,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:14:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:14:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-12 18:14:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:11,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:11,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:11,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:14:11,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:11,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:11,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:11,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1878 backedges. 72 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:14:11,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747449992] [2020-10-12 18:14:11,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:14:11,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 18:14:11,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512285126] [2020-10-12 18:14:11,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 18:14:11,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:11,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 18:14:11,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:14:11,330 INFO L87 Difference]: Start difference. First operand 640 states and 883 transitions. Second operand 27 states. [2020-10-12 18:14:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:24,034 INFO L93 Difference]: Finished difference Result 644 states and 885 transitions. [2020-10-12 18:14:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 18:14:24,035 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 290 [2020-10-12 18:14:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:24,038 INFO L225 Difference]: With dead ends: 644 [2020-10-12 18:14:24,038 INFO L226 Difference]: Without dead ends: 642 [2020-10-12 18:14:24,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=147, Invalid=2403, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 18:14:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-12 18:14:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 640. [2020-10-12 18:14:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-12 18:14:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 882 transitions. [2020-10-12 18:14:24,055 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 882 transitions. Word has length 290 [2020-10-12 18:14:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:24,056 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 882 transitions. [2020-10-12 18:14:24,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 18:14:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 882 transitions. [2020-10-12 18:14:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-12 18:14:24,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:24,059 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 19, 19, 12, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:24,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 18:14:24,060 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:24,060 INFO L82 PathProgramCache]: Analyzing trace with hash 867398673, now seen corresponding path program 6 times [2020-10-12 18:14:24,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:24,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587534364] [2020-10-12 18:14:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:24,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:29,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:29,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-12 18:14:29,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-12 18:14:29,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:14:29,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:14:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 286 [2020-10-12 18:14:29,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:14:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:29,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2158 backedges. 188 proven. 1910 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 18:14:29,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587534364] [2020-10-12 18:14:29,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:14:29,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:14:29,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757373065] [2020-10-12 18:14:29,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:14:29,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:29,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:14:29,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:14:29,591 INFO L87 Difference]: Start difference. First operand 640 states and 882 transitions. Second operand 17 states. [2020-10-12 18:14:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:32,005 INFO L93 Difference]: Finished difference Result 815 states and 1123 transitions. [2020-10-12 18:14:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:14:32,006 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 307 [2020-10-12 18:14:32,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:32,011 INFO L225 Difference]: With dead ends: 815 [2020-10-12 18:14:32,011 INFO L226 Difference]: Without dead ends: 728 [2020-10-12 18:14:32,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:14:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-12 18:14:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 679. [2020-10-12 18:14:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2020-10-12 18:14:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 936 transitions. [2020-10-12 18:14:32,028 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 936 transitions. Word has length 307 [2020-10-12 18:14:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:32,028 INFO L479 AbstractCegarLoop]: Abstraction has 679 states and 936 transitions. [2020-10-12 18:14:32,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:14:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 936 transitions. [2020-10-12 18:14:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 18:14:32,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:32,031 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 20, 20, 13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:32,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 18:14:32,031 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:32,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:32,032 INFO L82 PathProgramCache]: Analyzing trace with hash -651129902, now seen corresponding path program 6 times [2020-10-12 18:14:32,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:32,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948846472] [2020-10-12 18:14:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:37,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:37,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 18:14:37,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-12 18:14:37,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:14:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:14:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-12 18:14:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:38,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:14:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:14:38,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:14:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:14:38,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:14:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:14:38,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:14:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:14:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:14:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:14:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:14:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2351 backedges. 81 proven. 2270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:14:38,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948846472] [2020-10-12 18:14:38,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:14:38,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 18:14:38,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909306910] [2020-10-12 18:14:38,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 18:14:38,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:14:38,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 18:14:38,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-12 18:14:38,909 INFO L87 Difference]: Start difference. First operand 679 states and 936 transitions. Second operand 30 states. [2020-10-12 18:14:55,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:14:55,406 INFO L93 Difference]: Finished difference Result 722 states and 994 transitions. [2020-10-12 18:14:55,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 18:14:55,406 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 320 [2020-10-12 18:14:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:14:55,410 INFO L225 Difference]: With dead ends: 722 [2020-10-12 18:14:55,410 INFO L226 Difference]: Without dead ends: 720 [2020-10-12 18:14:55,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 18:14:55,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2020-10-12 18:14:55,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2020-10-12 18:14:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-10-12 18:14:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 992 transitions. [2020-10-12 18:14:55,427 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 992 transitions. Word has length 320 [2020-10-12 18:14:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:14:55,427 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 992 transitions. [2020-10-12 18:14:55,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 18:14:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 992 transitions. [2020-10-12 18:14:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-12 18:14:55,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:14:55,431 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 22, 22, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:14:55,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 18:14:55,431 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:14:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:14:55,431 INFO L82 PathProgramCache]: Analyzing trace with hash 927920032, now seen corresponding path program 7 times [2020-10-12 18:14:55,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:14:55,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225469863] [2020-10-12 18:14:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:14:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:14:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:00,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:00,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-12 18:15:00,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 18:15:00,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:15:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:15:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 332 [2020-10-12 18:15:00,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:00,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:00,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:00,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:15:00,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:00,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:15:00,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:00,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:00,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2894 backedges. 218 proven. 2606 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 18:15:00,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225469863] [2020-10-12 18:15:00,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:15:00,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:15:00,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080618184] [2020-10-12 18:15:00,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:15:00,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:15:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:15:00,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:15:00,981 INFO L87 Difference]: Start difference. First operand 720 states and 992 transitions. Second operand 19 states. [2020-10-12 18:15:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:15:03,918 INFO L93 Difference]: Finished difference Result 895 states and 1233 transitions. [2020-10-12 18:15:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:15:03,919 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 353 [2020-10-12 18:15:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:15:03,922 INFO L225 Difference]: With dead ends: 895 [2020-10-12 18:15:03,923 INFO L226 Difference]: Without dead ends: 808 [2020-10-12 18:15:03,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:15:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2020-10-12 18:15:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 759. [2020-10-12 18:15:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2020-10-12 18:15:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1046 transitions. [2020-10-12 18:15:03,941 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1046 transitions. Word has length 353 [2020-10-12 18:15:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:15:03,941 INFO L479 AbstractCegarLoop]: Abstraction has 759 states and 1046 transitions. [2020-10-12 18:15:03,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:15:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1046 transitions. [2020-10-12 18:15:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-12 18:15:03,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:15:03,944 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 23, 23, 15, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:15:03,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 18:15:03,944 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:15:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:15:03,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2076667741, now seen corresponding path program 7 times [2020-10-12 18:15:03,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:15:03,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417113262] [2020-10-12 18:15:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:15:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:09,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:09,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-12 18:15:09,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:09,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5198 [2020-10-12 18:15:09,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:15:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:15:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 353 [2020-10-12 18:15:09,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:15:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:15:10,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:15:10,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:15:10,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:15:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:15:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:15:10,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:15:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:15:10,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:15:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 93 proven. 3024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:15:11,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417113262] [2020-10-12 18:15:11,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:15:11,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 18:15:11,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872933017] [2020-10-12 18:15:11,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 18:15:11,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:15:11,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 18:15:11,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:15:11,211 INFO L87 Difference]: Start difference. First operand 759 states and 1046 transitions. Second operand 34 states. [2020-10-12 18:15:33,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:15:33,689 INFO L93 Difference]: Finished difference Result 802 states and 1104 transitions. [2020-10-12 18:15:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 18:15:33,690 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 366 [2020-10-12 18:15:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:15:33,695 INFO L225 Difference]: With dead ends: 802 [2020-10-12 18:15:33,695 INFO L226 Difference]: Without dead ends: 800 [2020-10-12 18:15:33,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=189, Invalid=3971, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 18:15:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2020-10-12 18:15:33,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2020-10-12 18:15:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2020-10-12 18:15:33,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1102 transitions. [2020-10-12 18:15:33,720 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1102 transitions. Word has length 366 [2020-10-12 18:15:33,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:15:33,721 INFO L479 AbstractCegarLoop]: Abstraction has 800 states and 1102 transitions. [2020-10-12 18:15:33,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 18:15:33,721 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1102 transitions. [2020-10-12 18:15:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-12 18:15:33,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:15:33,724 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 25, 25, 16, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:15:33,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 18:15:33,725 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:15:33,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:15:33,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1934002415, now seen corresponding path program 8 times [2020-10-12 18:15:33,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:15:33,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773643867] [2020-10-12 18:15:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:15:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 18:15:34,182 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 18:15:34,182 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 18:15:34,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 18:15:34,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:15:34 BoogieIcfgContainer [2020-10-12 18:15:34,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 18:15:34,267 INFO L168 Benchmark]: Toolchain (without parser) took 233440.00 ms. Allocated memory was 148.4 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 101.9 MB in the beginning and 1.0 GB in the end (delta: -906.0 MB). Peak memory consumption was 818.9 MB. Max. memory is 7.1 GB. [2020-10-12 18:15:34,267 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-12 18:15:34,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.30 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 101.9 MB in the beginning and 177.0 MB in the end (delta: -75.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-10-12 18:15:34,268 INFO L168 Benchmark]: Boogie Preprocessor took 114.79 ms. Allocated memory is still 205.0 MB. Free memory was 177.0 MB in the beginning and 173.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-10-12 18:15:34,269 INFO L168 Benchmark]: RCFGBuilder took 945.79 ms. Allocated memory is still 205.0 MB. Free memory was 173.2 MB in the beginning and 121.8 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-10-12 18:15:34,269 INFO L168 Benchmark]: TraceAbstraction took 231769.75 ms. Allocated memory was 205.0 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 121.8 MB in the beginning and 1.0 GB in the end (delta: -886.1 MB). Peak memory consumption was 782.2 MB. Max. memory is 7.1 GB. [2020-10-12 18:15:34,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 148.4 MB. Free memory was 121.6 MB in the beginning and 121.2 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 604.30 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 101.9 MB in the beginning and 177.0 MB in the end (delta: -75.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.79 ms. Allocated memory is still 205.0 MB. Free memory was 177.0 MB in the beginning and 173.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 945.79 ms. Allocated memory is still 205.0 MB. Free memory was 173.2 MB in the beginning and 121.8 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231769.75 ms. Allocated memory was 205.0 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 121.8 MB in the beginning and 1.0 GB in the end (delta: -886.1 MB). Peak memory consumption was 782.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 569]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L5] int m_Protocol = 1; [L6] int m_msg_2 = 2; [L7] int m_recv_ack_2 = 3; [L8] int m_msg_1_1 = 4; [L9] int m_msg_1_2 = 5; [L10] int m_recv_ack_1_1 = 6; [L11] int m_recv_ack_1_2 = 7; [L16] int q = 0; [L17] int method_id; [L20] int this_expect = 0; [L21] int this_buffer_empty = 0; [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND TRUE q == 0 [L44] COND TRUE __VERIFIER_nondet_int() [L48] method_id = 1 [L50] COND FALSE !(0) [L54] q = 1 [L56] this_expect=0 [L56] this_buffer_empty=1 [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L290] q = 4 [L292] this_expect=this_expect [L292] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND TRUE q == 4 [L364] COND FALSE !(__VERIFIER_nondet_int()) [L380] COND FALSE !(__VERIFIER_nondet_int()) [L396] COND FALSE !(__VERIFIER_nondet_int()) [L412] COND TRUE __VERIFIER_nondet_int() [L414] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L416] method_id = 5 [L418] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L422] q = 5 [L424] this_expect=(this_expect + 1) [L424] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND FALSE !(q == 4) [L463] COND TRUE q == 5 [L464] COND FALSE !(__VERIFIER_nondet_int()) [L480] COND FALSE !(__VERIFIER_nondet_int()) [L496] COND FALSE !(__VERIFIER_nondet_int()) [L512] COND FALSE !(__VERIFIER_nondet_int()) [L528] COND FALSE !(__VERIFIER_nondet_int()) [L544] COND TRUE __VERIFIER_nondet_int() [L546] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L548] method_id = 7 [L550] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L554] q = 1 [L556] this_expect=this_expect [L556] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L290] q = 4 [L292] this_expect=this_expect [L292] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND TRUE q == 4 [L364] COND FALSE !(__VERIFIER_nondet_int()) [L380] COND FALSE !(__VERIFIER_nondet_int()) [L396] COND FALSE !(__VERIFIER_nondet_int()) [L412] COND TRUE __VERIFIER_nondet_int() [L414] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L416] method_id = 5 [L418] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L422] q = 5 [L424] this_expect=(this_expect + 1) [L424] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND FALSE !(q == 4) [L463] COND TRUE q == 5 [L464] COND FALSE !(__VERIFIER_nondet_int()) [L480] COND FALSE !(__VERIFIER_nondet_int()) [L496] COND FALSE !(__VERIFIER_nondet_int()) [L512] COND FALSE !(__VERIFIER_nondet_int()) [L528] COND FALSE !(__VERIFIER_nondet_int()) [L544] COND TRUE __VERIFIER_nondet_int() [L546] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L548] method_id = 7 [L550] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L554] q = 1 [L556] this_expect=this_expect [L556] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L290] q = 4 [L292] this_expect=this_expect [L292] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND TRUE q == 4 [L364] COND FALSE !(__VERIFIER_nondet_int()) [L380] COND FALSE !(__VERIFIER_nondet_int()) [L396] COND FALSE !(__VERIFIER_nondet_int()) [L412] COND TRUE __VERIFIER_nondet_int() [L414] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L416] method_id = 5 [L418] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L422] q = 5 [L424] this_expect=(this_expect + 1) [L424] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND FALSE !(q == 4) [L463] COND TRUE q == 5 [L464] COND FALSE !(__VERIFIER_nondet_int()) [L480] COND FALSE !(__VERIFIER_nondet_int()) [L496] COND FALSE !(__VERIFIER_nondet_int()) [L512] COND FALSE !(__VERIFIER_nondet_int()) [L528] COND FALSE !(__VERIFIER_nondet_int()) [L544] COND TRUE __VERIFIER_nondet_int() [L546] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L548] method_id = 7 [L550] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L554] q = 1 [L556] this_expect=this_expect [L556] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L290] q = 4 [L292] this_expect=this_expect [L292] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND TRUE q == 4 [L364] COND FALSE !(__VERIFIER_nondet_int()) [L380] COND FALSE !(__VERIFIER_nondet_int()) [L396] COND FALSE !(__VERIFIER_nondet_int()) [L412] COND TRUE __VERIFIER_nondet_int() [L414] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L416] method_id = 5 [L418] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L422] q = 5 [L424] this_expect=(this_expect + 1) [L424] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND FALSE !(q == 4) [L463] COND TRUE q == 5 [L464] COND FALSE !(__VERIFIER_nondet_int()) [L480] COND FALSE !(__VERIFIER_nondet_int()) [L496] COND FALSE !(__VERIFIER_nondet_int()) [L512] COND FALSE !(__VERIFIER_nondet_int()) [L528] COND FALSE !(__VERIFIER_nondet_int()) [L544] COND TRUE __VERIFIER_nondet_int() [L546] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L548] method_id = 7 [L550] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L554] q = 1 [L556] this_expect=this_expect [L556] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L290] q = 4 [L292] this_expect=this_expect [L292] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND TRUE q == 4 [L364] COND FALSE !(__VERIFIER_nondet_int()) [L380] COND FALSE !(__VERIFIER_nondet_int()) [L396] COND FALSE !(__VERIFIER_nondet_int()) [L412] COND TRUE __VERIFIER_nondet_int() [L414] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L416] method_id = 5 [L418] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L422] q = 5 [L424] this_expect=(this_expect + 1) [L424] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND FALSE !(q == 4) [L463] COND TRUE q == 5 [L464] COND FALSE !(__VERIFIER_nondet_int()) [L480] COND FALSE !(__VERIFIER_nondet_int()) [L496] COND FALSE !(__VERIFIER_nondet_int()) [L512] COND FALSE !(__VERIFIER_nondet_int()) [L528] COND FALSE !(__VERIFIER_nondet_int()) [L544] COND TRUE __VERIFIER_nondet_int() [L546] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L548] method_id = 7 [L550] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L554] q = 1 [L556] this_expect=this_expect [L556] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L290] q = 4 [L292] this_expect=this_expect [L292] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND TRUE q == 4 [L364] COND FALSE !(__VERIFIER_nondet_int()) [L380] COND FALSE !(__VERIFIER_nondet_int()) [L396] COND FALSE !(__VERIFIER_nondet_int()) [L412] COND TRUE __VERIFIER_nondet_int() [L414] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L416] method_id = 5 [L418] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L422] q = 5 [L424] this_expect=(this_expect + 1) [L424] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND FALSE !(q == 4) [L463] COND TRUE q == 5 [L464] COND FALSE !(__VERIFIER_nondet_int()) [L480] COND FALSE !(__VERIFIER_nondet_int()) [L496] COND FALSE !(__VERIFIER_nondet_int()) [L512] COND FALSE !(__VERIFIER_nondet_int()) [L528] COND FALSE !(__VERIFIER_nondet_int()) [L544] COND TRUE __VERIFIER_nondet_int() [L546] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L548] method_id = 7 [L550] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L554] q = 1 [L556] this_expect=this_expect [L556] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L290] q = 4 [L292] this_expect=this_expect [L292] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND TRUE q == 4 [L364] COND FALSE !(__VERIFIER_nondet_int()) [L380] COND FALSE !(__VERIFIER_nondet_int()) [L396] COND FALSE !(__VERIFIER_nondet_int()) [L412] COND TRUE __VERIFIER_nondet_int() [L414] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L416] method_id = 5 [L418] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L422] q = 5 [L424] this_expect=(this_expect + 1) [L424] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND FALSE !(q == 4) [L463] COND TRUE q == 5 [L464] COND FALSE !(__VERIFIER_nondet_int()) [L480] COND FALSE !(__VERIFIER_nondet_int()) [L496] COND FALSE !(__VERIFIER_nondet_int()) [L512] COND FALSE !(__VERIFIER_nondet_int()) [L528] COND FALSE !(__VERIFIER_nondet_int()) [L544] COND TRUE __VERIFIER_nondet_int() [L546] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L548] method_id = 7 [L550] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L554] q = 1 [L556] this_expect=this_expect [L556] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND FALSE !((((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2))))) [L290] q = 4 [L292] this_expect=this_expect [L292] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND TRUE q == 4 [L364] COND FALSE !(__VERIFIER_nondet_int()) [L380] COND FALSE !(__VERIFIER_nondet_int()) [L396] COND FALSE !(__VERIFIER_nondet_int()) [L412] COND TRUE __VERIFIER_nondet_int() [L414] COND TRUE (((P1 % 2) != (0 % 2)) && !(((P1 % 2) != ((0 + 1) % 2)) && ((P1 % 2) != (0 % 2)))) [L416] method_id = 5 [L418] COND FALSE !(((((((P6 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))) || (((this_buffer_empty != 1) && ((P6 % 2) != (0 % 2))) && (((P6 % 2) != (0 % 2)) && !(((P6 % 2) != ((0 + 1) % 2)) && ((P6 % 2) != (0 % 2))))))) [L422] q = 5 [L424] this_expect=(this_expect + 1) [L424] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND FALSE !(q == 3) [L363] COND FALSE !(q == 4) [L463] COND TRUE q == 5 [L464] COND FALSE !(__VERIFIER_nondet_int()) [L480] COND FALSE !(__VERIFIER_nondet_int()) [L496] COND FALSE !(__VERIFIER_nondet_int()) [L512] COND FALSE !(__VERIFIER_nondet_int()) [L528] COND FALSE !(__VERIFIER_nondet_int()) [L544] COND TRUE __VERIFIER_nondet_int() [L546] COND TRUE ((P1 != (((0 + 1) - 1) % 2)) && !((P1 != ((((0 + 1) + 1) - 1) % 2)) && (P1 != (((0 + 1) - 1) % 2)))) [L548] method_id = 7 [L550] COND FALSE !(((((this_buffer_empty == 1) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))) || ((((P9 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && (P9 != (((0 + 1) - 1) % 2))) && ((P9 != (((0 + 1) - 1) % 2)) && !((P9 != ((((0 + 1) + 1) - 1) % 2)) && (P9 != (((0 + 1) - 1) % 2))))))) [L554] q = 1 [L556] this_expect=this_expect [L556] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND FALSE !(q == 0) [L63] COND TRUE q == 1 [L64] COND TRUE __VERIFIER_nondet_int() [L66] COND TRUE !((P1 % 2) != (0 % 2)) [L68] method_id = 2 [L70] COND FALSE !((((((P1 % 2) != (this_expect % 2)) && (this_buffer_empty == 1)) && !((P1 % 2) != (0 % 2))) || ((this_buffer_empty != 1) && !((P1 % 2) != (0 % 2))))) [L74] q = 3 [L76] this_expect=(this_expect + 1) [L76] this_buffer_empty=(1 - this_buffer_empty) [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND TRUE this_expect > 16 [L39] this_expect = -16 [L43] COND FALSE !(q == 0) [L63] COND FALSE !(q == 1) [L163] COND FALSE !(q == 2) [L263] COND TRUE q == 3 [L264] COND FALSE !(__VERIFIER_nondet_int()) [L280] COND TRUE __VERIFIER_nondet_int() [L282] COND TRUE !(P1 != (((0 + 1) - 1) % 2)) [L284] method_id = 3 [L286] COND TRUE (((this_buffer_empty == 1) && !(P3 != (((0 + 1) - 1) % 2))) || (((P3 != ((this_expect - 1) % 2)) && (this_buffer_empty != 1)) && !(P3 != (((0 + 1) - 1) % 2)))) [L569] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 115 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 231.6s, OverallIterations: 45, TraceHistogramMax: 35, AutomataDifference: 130.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11496 SDtfs, 28571 SDslu, 1731 SDs, 0 SdLazy, 140077 SolverSat, 998 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1320 GetRequests, 544 SyntacticMatches, 12 SemanticMatches, 764 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 21.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=800occurred in iteration=44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 44 MinimizatonAttempts, 752 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 93.8s InterpolantComputationTime, 5835 NumberOfCodeBlocks, 5835 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 5392 ConstructedInterpolants, 0 QuantifiedInterpolants, 9727710 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 44 InterpolantComputations, 10 PerfectInterpolantSequences, 2532/24483 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...