/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/locks/test_locks_13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:58:09,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:58:09,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:58:09,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:58:09,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:58:09,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:58:09,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:58:09,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:58:09,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:58:09,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:58:09,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:58:09,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:58:09,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:58:09,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:58:09,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:58:09,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:58:09,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:58:09,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:58:09,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:58:09,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:58:09,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:58:09,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:58:09,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:58:09,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:58:09,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:58:09,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:58:09,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:58:09,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:58:09,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:58:09,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:58:09,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:58:09,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:58:09,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:58:09,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:58:09,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:58:09,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:58:09,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:58:09,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:58:09,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:58:09,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:58:09,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:58:09,424 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 15:58:09,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:58:09,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:58:09,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:58:09,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:58:09,448 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:58:09,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:58:09,448 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:58:09,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:58:09,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:58:09,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:58:09,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:58:09,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:58:09,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:58:09,450 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:58:09,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:58:09,450 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:58:09,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:58:09,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:58:09,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:58:09,451 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:58:09,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:58:09,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:58:09,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:58:09,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:58:09,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:58:09,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:58:09,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:58:09,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:58:09,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:58:09,453 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 15:58:09,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:58:09,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:58:09,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:58:09,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:58:09,839 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:58:09,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_13.c [2020-10-12 15:58:09,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3de83e2a0/a85d5f1b620245828e069d73f50f45a4/FLAG60e168da9 [2020-10-12 15:58:10,365 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:58:10,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_13.c [2020-10-12 15:58:10,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3de83e2a0/a85d5f1b620245828e069d73f50f45a4/FLAG60e168da9 [2020-10-12 15:58:10,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3de83e2a0/a85d5f1b620245828e069d73f50f45a4 [2020-10-12 15:58:10,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:58:10,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:58:10,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:58:10,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:58:10,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:58:10,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2641392f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10, skipping insertion in model container [2020-10-12 15:58:10,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:58:10,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:58:11,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:58:11,096 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:58:11,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:58:11,168 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:58:11,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11 WrapperNode [2020-10-12 15:58:11,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:58:11,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:58:11,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:58:11,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:58:11,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (1/1) ... [2020-10-12 15:58:11,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (1/1) ... [2020-10-12 15:58:11,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (1/1) ... [2020-10-12 15:58:11,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (1/1) ... [2020-10-12 15:58:11,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (1/1) ... [2020-10-12 15:58:11,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (1/1) ... [2020-10-12 15:58:11,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (1/1) ... [2020-10-12 15:58:11,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:58:11,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:58:11,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:58:11,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:58:11,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (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 15:58:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:58:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:58:11,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:58:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:58:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:58:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:58:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:58:11,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:58:11,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:58:11,797 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:58:11,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:58:11 BoogieIcfgContainer [2020-10-12 15:58:11,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:58:11,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:58:11,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:58:11,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:58:11,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:58:10" (1/3) ... [2020-10-12 15:58:11,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8ac3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:58:11, skipping insertion in model container [2020-10-12 15:58:11,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:11" (2/3) ... [2020-10-12 15:58:11,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8ac3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:58:11, skipping insertion in model container [2020-10-12 15:58:11,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:58:11" (3/3) ... [2020-10-12 15:58:11,811 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_13.c [2020-10-12 15:58:11,823 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:58:11,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:58:11,846 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:58:11,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:58:11,875 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:58:11,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:58:11,875 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:58:11,877 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:58:11,877 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:58:11,877 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:58:11,878 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:58:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-12 15:58:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:58:11,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:11,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:11,909 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:11,916 INFO L82 PathProgramCache]: Analyzing trace with hash 2062980600, now seen corresponding path program 1 times [2020-10-12 15:58:11,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:11,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809562361] [2020-10-12 15:58:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:58:12,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 15:58:12,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:12,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:12,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:12,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:58:12,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:12,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:12,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:12,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:12,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:12,437 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 15:58:12,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809562361] [2020-10-12 15:58:12,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:12,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:12,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561659421] [2020-10-12 15:58:12,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:12,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:12,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:12,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:12,465 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2020-10-12 15:58:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:12,539 INFO L93 Difference]: Finished difference Result 105 states and 186 transitions. [2020-10-12 15:58:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:12,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-12 15:58:12,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:12,562 INFO L225 Difference]: With dead ends: 105 [2020-10-12 15:58:12,562 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 15:58:12,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 15:58:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2020-10-12 15:58:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-12 15:58:12,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 113 transitions. [2020-10-12 15:58:12,616 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 113 transitions. Word has length 23 [2020-10-12 15:58:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:12,617 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 113 transitions. [2020-10-12 15:58:12,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 113 transitions. [2020-10-12 15:58:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:58:12,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:12,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:12,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:58:12,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:12,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:12,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1041912246, now seen corresponding path program 1 times [2020-10-12 15:58:12,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:12,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218728623] [2020-10-12 15:58:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:58:12,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 15:58:12,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:12,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:12,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:12,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:12,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:12,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:12,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:12,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:12,813 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 15:58:12,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218728623] [2020-10-12 15:58:12,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:12,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:12,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373424755] [2020-10-12 15:58:12,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:12,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:12,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:12,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:12,818 INFO L87 Difference]: Start difference. First operand 62 states and 113 transitions. Second operand 3 states. [2020-10-12 15:58:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:12,846 INFO L93 Difference]: Finished difference Result 147 states and 272 transitions. [2020-10-12 15:58:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:12,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-12 15:58:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:12,849 INFO L225 Difference]: With dead ends: 147 [2020-10-12 15:58:12,850 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 15:58:12,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 15:58:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-10-12 15:58:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 15:58:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 161 transitions. [2020-10-12 15:58:12,865 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 161 transitions. Word has length 23 [2020-10-12 15:58:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:12,866 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 161 transitions. [2020-10-12 15:58:12,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 161 transitions. [2020-10-12 15:58:12,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:12,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:12,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:12,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:58:12,868 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:12,868 INFO L82 PathProgramCache]: Analyzing trace with hash -471898432, now seen corresponding path program 1 times [2020-10-12 15:58:12,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:12,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687606681] [2020-10-12 15:58:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 15:58:13,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:13,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:13,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:13,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,027 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 15:58:13,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687606681] [2020-10-12 15:58:13,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144207723] [2020-10-12 15:58:13,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,029 INFO L87 Difference]: Start difference. First operand 88 states and 161 transitions. Second operand 3 states. [2020-10-12 15:58:13,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,054 INFO L93 Difference]: Finished difference Result 135 states and 243 transitions. [2020-10-12 15:58:13,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:13,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,056 INFO L225 Difference]: With dead ends: 135 [2020-10-12 15:58:13,057 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 15:58:13,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 15:58:13,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-12 15:58:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 15:58:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 163 transitions. [2020-10-12 15:58:13,070 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 163 transitions. Word has length 24 [2020-10-12 15:58:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,070 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 163 transitions. [2020-10-12 15:58:13,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 163 transitions. [2020-10-12 15:58:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:13,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:13,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:58:13,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2060246334, now seen corresponding path program 1 times [2020-10-12 15:58:13,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100351666] [2020-10-12 15:58:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:13,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:58:13,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:13,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:13,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,158 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 15:58:13,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100351666] [2020-10-12 15:58:13,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938996904] [2020-10-12 15:58:13,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,161 INFO L87 Difference]: Start difference. First operand 91 states and 163 transitions. Second operand 3 states. [2020-10-12 15:58:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,181 INFO L93 Difference]: Finished difference Result 172 states and 312 transitions. [2020-10-12 15:58:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,184 INFO L225 Difference]: With dead ends: 172 [2020-10-12 15:58:13,184 INFO L226 Difference]: Without dead ends: 170 [2020-10-12 15:58:13,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-12 15:58:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 120. [2020-10-12 15:58:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-12 15:58:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 216 transitions. [2020-10-12 15:58:13,197 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 216 transitions. Word has length 24 [2020-10-12 15:58:13,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,198 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 216 transitions. [2020-10-12 15:58:13,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 216 transitions. [2020-10-12 15:58:13,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:13,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:13,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:58:13,200 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1213652608, now seen corresponding path program 1 times [2020-10-12 15:58:13,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055580465] [2020-10-12 15:58:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:13,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 15:58:13,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:13,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:13,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,301 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 15:58:13,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055580465] [2020-10-12 15:58:13,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642418300] [2020-10-12 15:58:13,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,303 INFO L87 Difference]: Start difference. First operand 120 states and 216 transitions. Second operand 3 states. [2020-10-12 15:58:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,333 INFO L93 Difference]: Finished difference Result 284 states and 518 transitions. [2020-10-12 15:58:13,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:13,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,336 INFO L225 Difference]: With dead ends: 284 [2020-10-12 15:58:13,336 INFO L226 Difference]: Without dead ends: 172 [2020-10-12 15:58:13,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-12 15:58:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2020-10-12 15:58:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-12 15:58:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 306 transitions. [2020-10-12 15:58:13,363 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 306 transitions. Word has length 24 [2020-10-12 15:58:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,364 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 306 transitions. [2020-10-12 15:58:13,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,364 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 306 transitions. [2020-10-12 15:58:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:58:13,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:13,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:58:13,369 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,369 INFO L82 PathProgramCache]: Analyzing trace with hash 557085835, now seen corresponding path program 1 times [2020-10-12 15:58:13,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975565959] [2020-10-12 15:58:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:58:13,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:13,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 15:58:13,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:13,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:13,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:13,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-12 15:58:13,494 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 15:58:13,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975565959] [2020-10-12 15:58:13,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623770901] [2020-10-12 15:58:13,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,500 INFO L87 Difference]: Start difference. First operand 170 states and 306 transitions. Second operand 3 states. [2020-10-12 15:58:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,523 INFO L93 Difference]: Finished difference Result 322 states and 586 transitions. [2020-10-12 15:58:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-12 15:58:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,526 INFO L225 Difference]: With dead ends: 322 [2020-10-12 15:58:13,526 INFO L226 Difference]: Without dead ends: 320 [2020-10-12 15:58:13,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-12 15:58:13,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 230. [2020-10-12 15:58:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-12 15:58:13,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 412 transitions. [2020-10-12 15:58:13,556 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 412 transitions. Word has length 25 [2020-10-12 15:58:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,557 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 412 transitions. [2020-10-12 15:58:13,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 412 transitions. [2020-10-12 15:58:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:58:13,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:13,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:58:13,562 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,562 INFO L82 PathProgramCache]: Analyzing trace with hash -463982519, now seen corresponding path program 1 times [2020-10-12 15:58:13,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961664246] [2020-10-12 15:58:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:58:13,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 15:58:13,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:13,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,704 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 15:58:13,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961664246] [2020-10-12 15:58:13,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419385483] [2020-10-12 15:58:13,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,708 INFO L87 Difference]: Start difference. First operand 230 states and 412 transitions. Second operand 3 states. [2020-10-12 15:58:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,741 INFO L93 Difference]: Finished difference Result 550 states and 994 transitions. [2020-10-12 15:58:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-12 15:58:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,744 INFO L225 Difference]: With dead ends: 550 [2020-10-12 15:58:13,744 INFO L226 Difference]: Without dead ends: 328 [2020-10-12 15:58:13,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-12 15:58:13,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 326. [2020-10-12 15:58:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-12 15:58:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 582 transitions. [2020-10-12 15:58:13,760 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 582 transitions. Word has length 25 [2020-10-12 15:58:13,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,760 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 582 transitions. [2020-10-12 15:58:13,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,760 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 582 transitions. [2020-10-12 15:58:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:58:13,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:13,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:58:13,763 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 90004791, now seen corresponding path program 1 times [2020-10-12 15:58:13,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895817361] [2020-10-12 15:58:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:58:13,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:13,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 15:58:13,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:13,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:13,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:58:13,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895817361] [2020-10-12 15:58:13,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615434378] [2020-10-12 15:58:13,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,905 INFO L87 Difference]: Start difference. First operand 326 states and 582 transitions. Second operand 3 states. [2020-10-12 15:58:13,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,928 INFO L93 Difference]: Finished difference Result 614 states and 1108 transitions. [2020-10-12 15:58:13,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-12 15:58:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,932 INFO L225 Difference]: With dead ends: 614 [2020-10-12 15:58:13,932 INFO L226 Difference]: Without dead ends: 612 [2020-10-12 15:58:13,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-10-12 15:58:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 450. [2020-10-12 15:58:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-12 15:58:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 794 transitions. [2020-10-12 15:58:13,947 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 794 transitions. Word has length 26 [2020-10-12 15:58:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,948 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 794 transitions. [2020-10-12 15:58:13,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 794 transitions. [2020-10-12 15:58:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:58:13,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:13,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:58:13,951 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,952 INFO L82 PathProgramCache]: Analyzing trace with hash -931063563, now seen corresponding path program 1 times [2020-10-12 15:58:13,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789433767] [2020-10-12 15:58:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:58:14,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:14,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 15:58:14,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:14,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:14,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:14,167 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 15:58:14,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789433767] [2020-10-12 15:58:14,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220226736] [2020-10-12 15:58:14,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,176 INFO L87 Difference]: Start difference. First operand 450 states and 794 transitions. Second operand 3 states. [2020-10-12 15:58:14,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,216 INFO L93 Difference]: Finished difference Result 1078 states and 1916 transitions. [2020-10-12 15:58:14,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:14,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-12 15:58:14,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,224 INFO L225 Difference]: With dead ends: 1078 [2020-10-12 15:58:14,225 INFO L226 Difference]: Without dead ends: 636 [2020-10-12 15:58:14,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-12 15:58:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 634. [2020-10-12 15:58:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-12 15:58:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1114 transitions. [2020-10-12 15:58:14,262 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1114 transitions. Word has length 26 [2020-10-12 15:58:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,263 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 1114 transitions. [2020-10-12 15:58:14,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:14,263 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1114 transitions. [2020-10-12 15:58:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:14,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:14,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:58:14,266 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1504605344, now seen corresponding path program 1 times [2020-10-12 15:58:14,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:14,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886944190] [2020-10-12 15:58:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:14,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 15:58:14,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:14,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:14,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,567 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 15:58:14,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886944190] [2020-10-12 15:58:14,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745706817] [2020-10-12 15:58:14,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,569 INFO L87 Difference]: Start difference. First operand 634 states and 1114 transitions. Second operand 3 states. [2020-10-12 15:58:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,592 INFO L93 Difference]: Finished difference Result 948 states and 1660 transitions. [2020-10-12 15:58:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:14,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,597 INFO L225 Difference]: With dead ends: 948 [2020-10-12 15:58:14,597 INFO L226 Difference]: Without dead ends: 638 [2020-10-12 15:58:14,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-12 15:58:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 636. [2020-10-12 15:58:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2020-10-12 15:58:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1102 transitions. [2020-10-12 15:58:14,620 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1102 transitions. Word has length 27 [2020-10-12 15:58:14,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,621 INFO L479 AbstractCegarLoop]: Abstraction has 636 states and 1102 transitions. [2020-10-12 15:58:14,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1102 transitions. [2020-10-12 15:58:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:14,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:14,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:58:14,623 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:14,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1101418210, now seen corresponding path program 1 times [2020-10-12 15:58:14,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:14,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754923838] [2020-10-12 15:58:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:14,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:14,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 15:58:14,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:14,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:14,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:14,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,774 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 15:58:14,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754923838] [2020-10-12 15:58:14,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419636061] [2020-10-12 15:58:14,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,776 INFO L87 Difference]: Start difference. First operand 636 states and 1102 transitions. Second operand 3 states. [2020-10-12 15:58:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,798 INFO L93 Difference]: Finished difference Result 952 states and 1644 transitions. [2020-10-12 15:58:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:14,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,802 INFO L225 Difference]: With dead ends: 952 [2020-10-12 15:58:14,802 INFO L226 Difference]: Without dead ends: 642 [2020-10-12 15:58:14,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-12 15:58:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 640. [2020-10-12 15:58:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-12 15:58:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1094 transitions. [2020-10-12 15:58:14,823 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1094 transitions. Word has length 27 [2020-10-12 15:58:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,823 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 1094 transitions. [2020-10-12 15:58:14,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1094 transitions. [2020-10-12 15:58:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:14,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:14,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:58:14,825 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash -892726496, now seen corresponding path program 1 times [2020-10-12 15:58:14,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:14,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992166585] [2020-10-12 15:58:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:14,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:14,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 15:58:14,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:14,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:14,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:14,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,912 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 15:58:14,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992166585] [2020-10-12 15:58:14,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128978523] [2020-10-12 15:58:14,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,914 INFO L87 Difference]: Start difference. First operand 640 states and 1094 transitions. Second operand 3 states. [2020-10-12 15:58:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,946 INFO L93 Difference]: Finished difference Result 1188 states and 2064 transitions. [2020-10-12 15:58:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:14,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,956 INFO L225 Difference]: With dead ends: 1188 [2020-10-12 15:58:14,956 INFO L226 Difference]: Without dead ends: 1186 [2020-10-12 15:58:14,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-10-12 15:58:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 896. [2020-10-12 15:58:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-12 15:58:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1502 transitions. [2020-10-12 15:58:14,996 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1502 transitions. Word has length 27 [2020-10-12 15:58:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,996 INFO L479 AbstractCegarLoop]: Abstraction has 896 states and 1502 transitions. [2020-10-12 15:58:14,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1502 transitions. [2020-10-12 15:58:14,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:14,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:14,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:58:15,000 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:15,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:15,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1913794850, now seen corresponding path program 1 times [2020-10-12 15:58:15,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:15,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2070099854] [2020-10-12 15:58:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:15,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 15:58:15,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:15,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:15,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:15,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:15,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:15,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:15,117 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 15:58:15,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2070099854] [2020-10-12 15:58:15,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:15,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:15,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561730050] [2020-10-12 15:58:15,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:15,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:15,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:15,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,132 INFO L87 Difference]: Start difference. First operand 896 states and 1502 transitions. Second operand 3 states. [2020-10-12 15:58:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:15,177 INFO L93 Difference]: Finished difference Result 2132 states and 3600 transitions. [2020-10-12 15:58:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:15,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:15,187 INFO L225 Difference]: With dead ends: 2132 [2020-10-12 15:58:15,188 INFO L226 Difference]: Without dead ends: 1250 [2020-10-12 15:58:15,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2020-10-12 15:58:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1248. [2020-10-12 15:58:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1248 states. [2020-10-12 15:58:15,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2086 transitions. [2020-10-12 15:58:15,240 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2086 transitions. Word has length 27 [2020-10-12 15:58:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:15,241 INFO L479 AbstractCegarLoop]: Abstraction has 1248 states and 2086 transitions. [2020-10-12 15:58:15,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2086 transitions. [2020-10-12 15:58:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:58:15,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:15,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:15,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:58:15,244 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:15,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1904503828, now seen corresponding path program 1 times [2020-10-12 15:58:15,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:15,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183049719] [2020-10-12 15:58:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:58:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 15:58:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:15,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:15,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:15,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:15,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:15,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:15,429 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 15:58:15,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183049719] [2020-10-12 15:58:15,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:15,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:15,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958980861] [2020-10-12 15:58:15,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:15,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:15,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,432 INFO L87 Difference]: Start difference. First operand 1248 states and 2086 transitions. Second operand 3 states. [2020-10-12 15:58:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:15,474 INFO L93 Difference]: Finished difference Result 1868 states and 3112 transitions. [2020-10-12 15:58:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:15,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-12 15:58:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:15,485 INFO L225 Difference]: With dead ends: 1868 [2020-10-12 15:58:15,485 INFO L226 Difference]: Without dead ends: 1258 [2020-10-12 15:58:15,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-12 15:58:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1256. [2020-10-12 15:58:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2020-10-12 15:58:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 2070 transitions. [2020-10-12 15:58:15,529 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 2070 transitions. Word has length 28 [2020-10-12 15:58:15,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:15,529 INFO L479 AbstractCegarLoop]: Abstraction has 1256 states and 2070 transitions. [2020-10-12 15:58:15,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 2070 transitions. [2020-10-12 15:58:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:58:15,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:15,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:15,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:58:15,532 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:15,532 INFO L82 PathProgramCache]: Analyzing trace with hash 396318762, now seen corresponding path program 1 times [2020-10-12 15:58:15,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:15,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103480066] [2020-10-12 15:58:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:58:15,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 15:58:15,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:15,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:15,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:15,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:15,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:15,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:15,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:15,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:15,619 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 15:58:15,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103480066] [2020-10-12 15:58:15,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:15,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:15,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066533108] [2020-10-12 15:58:15,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:15,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:15,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:15,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,621 INFO L87 Difference]: Start difference. First operand 1256 states and 2070 transitions. Second operand 3 states. [2020-10-12 15:58:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:15,659 INFO L93 Difference]: Finished difference Result 2300 states and 3864 transitions. [2020-10-12 15:58:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:15,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-12 15:58:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:15,672 INFO L225 Difference]: With dead ends: 2300 [2020-10-12 15:58:15,672 INFO L226 Difference]: Without dead ends: 2298 [2020-10-12 15:58:15,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2020-10-12 15:58:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1784. [2020-10-12 15:58:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1784 states. [2020-10-12 15:58:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2870 transitions. [2020-10-12 15:58:15,732 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2870 transitions. Word has length 28 [2020-10-12 15:58:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:15,732 INFO L479 AbstractCegarLoop]: Abstraction has 1784 states and 2870 transitions. [2020-10-12 15:58:15,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:15,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2870 transitions. [2020-10-12 15:58:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:58:15,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:15,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:15,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:58:15,737 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:15,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:15,737 INFO L82 PathProgramCache]: Analyzing trace with hash -624749592, now seen corresponding path program 1 times [2020-10-12 15:58:15,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:15,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410116884] [2020-10-12 15:58:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:58:15,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 15:58:15,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:15,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:15,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:15,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:15,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:15,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:15,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:15,821 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 15:58:15,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410116884] [2020-10-12 15:58:15,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:15,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:15,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61071659] [2020-10-12 15:58:15,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:15,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:15,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:15,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,823 INFO L87 Difference]: Start difference. First operand 1784 states and 2870 transitions. Second operand 3 states. [2020-10-12 15:58:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:15,881 INFO L93 Difference]: Finished difference Result 4220 states and 6840 transitions. [2020-10-12 15:58:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:15,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-12 15:58:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:15,896 INFO L225 Difference]: With dead ends: 4220 [2020-10-12 15:58:15,896 INFO L226 Difference]: Without dead ends: 2458 [2020-10-12 15:58:15,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2020-10-12 15:58:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2456. [2020-10-12 15:58:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2020-10-12 15:58:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3942 transitions. [2020-10-12 15:58:16,021 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3942 transitions. Word has length 28 [2020-10-12 15:58:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:16,021 INFO L479 AbstractCegarLoop]: Abstraction has 2456 states and 3942 transitions. [2020-10-12 15:58:16,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3942 transitions. [2020-10-12 15:58:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:58:16,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:16,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:16,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:58:16,026 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:16,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash -598806153, now seen corresponding path program 1 times [2020-10-12 15:58:16,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:16,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168359155] [2020-10-12 15:58:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:58:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 15:58:16,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:16,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:16,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:16,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:16,162 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 15:58:16,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168359155] [2020-10-12 15:58:16,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:16,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:16,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816684699] [2020-10-12 15:58:16,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:16,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:16,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:16,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:16,164 INFO L87 Difference]: Start difference. First operand 2456 states and 3942 transitions. Second operand 3 states. [2020-10-12 15:58:16,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:16,224 INFO L93 Difference]: Finished difference Result 4444 states and 7272 transitions. [2020-10-12 15:58:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:16,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-12 15:58:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:16,247 INFO L225 Difference]: With dead ends: 4444 [2020-10-12 15:58:16,248 INFO L226 Difference]: Without dead ends: 4442 [2020-10-12 15:58:16,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2020-10-12 15:58:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 3544. [2020-10-12 15:58:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2020-10-12 15:58:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5542 transitions. [2020-10-12 15:58:16,363 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5542 transitions. Word has length 29 [2020-10-12 15:58:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:16,363 INFO L479 AbstractCegarLoop]: Abstraction has 3544 states and 5542 transitions. [2020-10-12 15:58:16,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5542 transitions. [2020-10-12 15:58:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:58:16,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:16,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:16,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:58:16,369 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:16,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:16,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1619874507, now seen corresponding path program 1 times [2020-10-12 15:58:16,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:16,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807522181] [2020-10-12 15:58:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:58:16,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 15:58:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:16,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:16,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:16,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:16,484 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 15:58:16,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807522181] [2020-10-12 15:58:16,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:16,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:16,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606613794] [2020-10-12 15:58:16,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:16,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:16,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:16,486 INFO L87 Difference]: Start difference. First operand 3544 states and 5542 transitions. Second operand 3 states. [2020-10-12 15:58:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:16,569 INFO L93 Difference]: Finished difference Result 8348 states and 13160 transitions. [2020-10-12 15:58:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:16,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-12 15:58:16,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:16,596 INFO L225 Difference]: With dead ends: 8348 [2020-10-12 15:58:16,597 INFO L226 Difference]: Without dead ends: 4826 [2020-10-12 15:58:16,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2020-10-12 15:58:16,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4824. [2020-10-12 15:58:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4824 states. [2020-10-12 15:58:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 7526 transitions. [2020-10-12 15:58:16,804 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 7526 transitions. Word has length 29 [2020-10-12 15:58:16,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:16,804 INFO L479 AbstractCegarLoop]: Abstraction has 4824 states and 7526 transitions. [2020-10-12 15:58:16,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:16,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 7526 transitions. [2020-10-12 15:58:16,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:16,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:16,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:16,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:58:16,812 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1382907105, now seen corresponding path program 1 times [2020-10-12 15:58:16,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:16,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422641706] [2020-10-12 15:58:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:16,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 15:58:16,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:16,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:16,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:16,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:16,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:16,995 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 15:58:16,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422641706] [2020-10-12 15:58:16,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:16,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:16,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139479632] [2020-10-12 15:58:16,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:16,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:16,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:16,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:16,997 INFO L87 Difference]: Start difference. First operand 4824 states and 7526 transitions. Second operand 3 states. [2020-10-12 15:58:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:17,074 INFO L93 Difference]: Finished difference Result 7244 states and 11272 transitions. [2020-10-12 15:58:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:17,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:17,098 INFO L225 Difference]: With dead ends: 7244 [2020-10-12 15:58:17,098 INFO L226 Difference]: Without dead ends: 4874 [2020-10-12 15:58:17,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2020-10-12 15:58:17,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4872. [2020-10-12 15:58:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4872 states. [2020-10-12 15:58:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 7494 transitions. [2020-10-12 15:58:17,252 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 7494 transitions. Word has length 30 [2020-10-12 15:58:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:17,252 INFO L479 AbstractCegarLoop]: Abstraction has 4872 states and 7494 transitions. [2020-10-12 15:58:17,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 7494 transitions. [2020-10-12 15:58:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:17,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:17,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:17,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:58:17,259 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash 917915485, now seen corresponding path program 1 times [2020-10-12 15:58:17,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:17,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565206893] [2020-10-12 15:58:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:17,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:17,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:17,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 15:58:17,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:17,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:17,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:17,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:17,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:17,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:17,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:17,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:17,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:17,370 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 15:58:17,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565206893] [2020-10-12 15:58:17,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:17,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:17,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5124870] [2020-10-12 15:58:17,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:17,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:17,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:17,373 INFO L87 Difference]: Start difference. First operand 4872 states and 7494 transitions. Second operand 3 states. [2020-10-12 15:58:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:17,446 INFO L93 Difference]: Finished difference Result 7244 states and 11080 transitions. [2020-10-12 15:58:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:17,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:17,459 INFO L225 Difference]: With dead ends: 7244 [2020-10-12 15:58:17,459 INFO L226 Difference]: Without dead ends: 4874 [2020-10-12 15:58:17,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2020-10-12 15:58:17,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4872. [2020-10-12 15:58:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4872 states. [2020-10-12 15:58:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 7366 transitions. [2020-10-12 15:58:17,611 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 7366 transitions. Word has length 30 [2020-10-12 15:58:17,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:17,611 INFO L479 AbstractCegarLoop]: Abstraction has 4872 states and 7366 transitions. [2020-10-12 15:58:17,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:17,612 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 7366 transitions. [2020-10-12 15:58:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:17,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:17,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:17,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:58:17,618 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:17,619 INFO L82 PathProgramCache]: Analyzing trace with hash -771028257, now seen corresponding path program 1 times [2020-10-12 15:58:17,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:17,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503261802] [2020-10-12 15:58:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:17,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:17,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 15:58:17,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:17,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:58:17,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:17,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:17,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:17,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:17,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:17,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:17,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:17,701 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 15:58:17,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503261802] [2020-10-12 15:58:17,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:17,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:17,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322764014] [2020-10-12 15:58:17,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:17,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:17,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:17,704 INFO L87 Difference]: Start difference. First operand 4872 states and 7366 transitions. Second operand 3 states. [2020-10-12 15:58:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:17,818 INFO L93 Difference]: Finished difference Result 14348 states and 21576 transitions. [2020-10-12 15:58:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:17,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:17,838 INFO L225 Difference]: With dead ends: 14348 [2020-10-12 15:58:17,838 INFO L226 Difference]: Without dead ends: 9546 [2020-10-12 15:58:17,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:17,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2020-10-12 15:58:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 9544. [2020-10-12 15:58:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9544 states. [2020-10-12 15:58:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9544 states to 9544 states and 14086 transitions. [2020-10-12 15:58:18,065 INFO L78 Accepts]: Start accepts. Automaton has 9544 states and 14086 transitions. Word has length 30 [2020-10-12 15:58:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:18,065 INFO L479 AbstractCegarLoop]: Abstraction has 9544 states and 14086 transitions. [2020-10-12 15:58:18,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9544 states and 14086 transitions. [2020-10-12 15:58:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:18,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:18,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:18,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:58:18,084 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:18,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:18,084 INFO L82 PathProgramCache]: Analyzing trace with hash 250040097, now seen corresponding path program 1 times [2020-10-12 15:58:18,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:18,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098002482] [2020-10-12 15:58:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:18,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:18,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:18,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:18,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 15:58:18,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:18,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:58:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:18,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:18,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:18,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:18,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:18,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:18,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:18,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:18,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:18,245 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 15:58:18,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098002482] [2020-10-12 15:58:18,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:18,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:18,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370114812] [2020-10-12 15:58:18,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:18,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:18,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:18,248 INFO L87 Difference]: Start difference. First operand 9544 states and 14086 transitions. Second operand 3 states. [2020-10-12 15:58:18,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:18,378 INFO L93 Difference]: Finished difference Result 11084 states and 16904 transitions. [2020-10-12 15:58:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:18,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:18,402 INFO L225 Difference]: With dead ends: 11084 [2020-10-12 15:58:18,403 INFO L226 Difference]: Without dead ends: 11082 [2020-10-12 15:58:18,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2020-10-12 15:58:18,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 9544. [2020-10-12 15:58:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9544 states. [2020-10-12 15:58:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9544 states to 9544 states and 13958 transitions. [2020-10-12 15:58:18,627 INFO L78 Accepts]: Start accepts. Automaton has 9544 states and 13958 transitions. Word has length 30 [2020-10-12 15:58:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:18,627 INFO L479 AbstractCegarLoop]: Abstraction has 9544 states and 13958 transitions. [2020-10-12 15:58:18,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 9544 states and 13958 transitions. [2020-10-12 15:58:18,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:18,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:18,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:18,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:58:18,639 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:18,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1868142604, now seen corresponding path program 1 times [2020-10-12 15:58:18,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:18,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184822919] [2020-10-12 15:58:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:18,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 15:58:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:18,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:18,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:18,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:18,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:18,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:18,727 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 15:58:18,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184822919] [2020-10-12 15:58:18,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:18,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:18,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173585280] [2020-10-12 15:58:18,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:18,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:18,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:18,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:18,731 INFO L87 Difference]: Start difference. First operand 9544 states and 13958 transitions. Second operand 3 states. [2020-10-12 15:58:18,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:18,838 INFO L93 Difference]: Finished difference Result 14284 states and 20808 transitions. [2020-10-12 15:58:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:18,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:18,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:18,857 INFO L225 Difference]: With dead ends: 14284 [2020-10-12 15:58:18,857 INFO L226 Difference]: Without dead ends: 9610 [2020-10-12 15:58:18,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9610 states. [2020-10-12 15:58:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9610 to 9608. [2020-10-12 15:58:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9608 states. [2020-10-12 15:58:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9608 states to 9608 states and 13830 transitions. [2020-10-12 15:58:19,173 INFO L78 Accepts]: Start accepts. Automaton has 9608 states and 13830 transitions. Word has length 31 [2020-10-12 15:58:19,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:19,174 INFO L479 AbstractCegarLoop]: Abstraction has 9608 states and 13830 transitions. [2020-10-12 15:58:19,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:19,174 INFO L276 IsEmpty]: Start isEmpty. Operand 9608 states and 13830 transitions. [2020-10-12 15:58:19,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:19,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:19,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:19,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:58:19,186 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:19,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:19,186 INFO L82 PathProgramCache]: Analyzing trace with hash -126002102, now seen corresponding path program 1 times [2020-10-12 15:58:19,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:19,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839946573] [2020-10-12 15:58:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:19,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:19,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:19,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:19,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 15:58:19,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:19,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:19,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:19,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:19,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:19,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:19,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:19,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:19,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:19,240 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 15:58:19,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839946573] [2020-10-12 15:58:19,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:19,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:19,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368110490] [2020-10-12 15:58:19,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:19,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:19,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:19,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:19,242 INFO L87 Difference]: Start difference. First operand 9608 states and 13830 transitions. Second operand 3 states. [2020-10-12 15:58:19,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:19,400 INFO L93 Difference]: Finished difference Result 16780 states and 24712 transitions. [2020-10-12 15:58:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:19,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:19,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:19,434 INFO L225 Difference]: With dead ends: 16780 [2020-10-12 15:58:19,434 INFO L226 Difference]: Without dead ends: 16778 [2020-10-12 15:58:19,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16778 states. [2020-10-12 15:58:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16778 to 14216. [2020-10-12 15:58:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14216 states. [2020-10-12 15:58:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14216 states to 14216 states and 19846 transitions. [2020-10-12 15:58:19,732 INFO L78 Accepts]: Start accepts. Automaton has 14216 states and 19846 transitions. Word has length 31 [2020-10-12 15:58:19,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:19,732 INFO L479 AbstractCegarLoop]: Abstraction has 14216 states and 19846 transitions. [2020-10-12 15:58:19,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 14216 states and 19846 transitions. [2020-10-12 15:58:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:19,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:19,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:19,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:58:19,754 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:19,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:19,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1147070456, now seen corresponding path program 1 times [2020-10-12 15:58:19,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:19,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296625712] [2020-10-12 15:58:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:19,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:19,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:19,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 15:58:19,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:19,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:19,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:19,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:19,933 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 15:58:19,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296625712] [2020-10-12 15:58:19,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:19,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:19,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056431785] [2020-10-12 15:58:19,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:19,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:19,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:19,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:19,936 INFO L87 Difference]: Start difference. First operand 14216 states and 19846 transitions. Second operand 3 states. [2020-10-12 15:58:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:20,224 INFO L93 Difference]: Finished difference Result 32908 states and 46216 transitions. [2020-10-12 15:58:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:20,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:20,277 INFO L225 Difference]: With dead ends: 32908 [2020-10-12 15:58:20,278 INFO L226 Difference]: Without dead ends: 18826 [2020-10-12 15:58:20,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18826 states. [2020-10-12 15:58:20,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18826 to 18824. [2020-10-12 15:58:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18824 states. [2020-10-12 15:58:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18824 states to 18824 states and 26118 transitions. [2020-10-12 15:58:20,682 INFO L78 Accepts]: Start accepts. Automaton has 18824 states and 26118 transitions. Word has length 31 [2020-10-12 15:58:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:20,682 INFO L479 AbstractCegarLoop]: Abstraction has 18824 states and 26118 transitions. [2020-10-12 15:58:20,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 18824 states and 26118 transitions. [2020-10-12 15:58:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:58:20,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:20,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:20,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:58:20,706 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash 389117270, now seen corresponding path program 1 times [2020-10-12 15:58:20,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:20,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139171400] [2020-10-12 15:58:20,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:20,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:20,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:20,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:58:20,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 15:58:20,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:58:20,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:20,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:20,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:20,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:20,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:20,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:20,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:20,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:58:20,779 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 15:58:20,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139171400] [2020-10-12 15:58:20,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:20,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:20,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260535278] [2020-10-12 15:58:20,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:20,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:20,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:20,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:20,782 INFO L87 Difference]: Start difference. First operand 18824 states and 26118 transitions. Second operand 3 states. [2020-10-12 15:58:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:21,670 INFO L93 Difference]: Finished difference Result 32396 states and 45832 transitions. [2020-10-12 15:58:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:21,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-12 15:58:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:21,747 INFO L225 Difference]: With dead ends: 32396 [2020-10-12 15:58:21,748 INFO L226 Difference]: Without dead ends: 32394 [2020-10-12 15:58:21,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32394 states. [2020-10-12 15:58:22,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32394 to 28296. [2020-10-12 15:58:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28296 states. [2020-10-12 15:58:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28296 states to 28296 states and 38150 transitions. [2020-10-12 15:58:22,471 INFO L78 Accepts]: Start accepts. Automaton has 28296 states and 38150 transitions. Word has length 32 [2020-10-12 15:58:22,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:22,471 INFO L479 AbstractCegarLoop]: Abstraction has 28296 states and 38150 transitions. [2020-10-12 15:58:22,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 28296 states and 38150 transitions. [2020-10-12 15:58:22,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:58:22,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:22,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:22,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:58:22,519 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash -631951084, now seen corresponding path program 1 times [2020-10-12 15:58:22,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:22,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626529022] [2020-10-12 15:58:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:22,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:22,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:22,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:22,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:58:22,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:22,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 15:58:22,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:22,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:58:22,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:22,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:22,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:22,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:22,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:22,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:22,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:22,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:22,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:22,599 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 15:58:22,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626529022] [2020-10-12 15:58:22,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:22,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:22,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090448382] [2020-10-12 15:58:22,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:22,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:22,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:22,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:22,601 INFO L87 Difference]: Start difference. First operand 28296 states and 38150 transitions. Second operand 3 states. [2020-10-12 15:58:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:23,021 INFO L93 Difference]: Finished difference Result 65164 states and 88328 transitions. [2020-10-12 15:58:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:23,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-12 15:58:23,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:23,156 INFO L225 Difference]: With dead ends: 65164 [2020-10-12 15:58:23,157 INFO L226 Difference]: Without dead ends: 37002 [2020-10-12 15:58:23,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37002 states. [2020-10-12 15:58:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37002 to 37000. [2020-10-12 15:58:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37000 states. [2020-10-12 15:58:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37000 states to 37000 states and 49414 transitions. [2020-10-12 15:58:24,148 INFO L78 Accepts]: Start accepts. Automaton has 37000 states and 49414 transitions. Word has length 32 [2020-10-12 15:58:24,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:24,148 INFO L479 AbstractCegarLoop]: Abstraction has 37000 states and 49414 transitions. [2020-10-12 15:58:24,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 37000 states and 49414 transitions. [2020-10-12 15:58:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:24,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:24,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:24,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:58:24,206 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:24,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:24,207 INFO L82 PathProgramCache]: Analyzing trace with hash -822051041, now seen corresponding path program 1 times [2020-10-12 15:58:24,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:24,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013486155] [2020-10-12 15:58:24,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:24,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:24,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:24,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 15:58:24,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:24,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:24,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:24,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:24,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:24,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:24,313 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 15:58:24,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013486155] [2020-10-12 15:58:24,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:24,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:24,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839366316] [2020-10-12 15:58:24,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:24,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:24,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:24,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:24,316 INFO L87 Difference]: Start difference. First operand 37000 states and 49414 transitions. Second operand 3 states. [2020-10-12 15:58:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:24,729 INFO L93 Difference]: Finished difference Result 55564 states and 73992 transitions. [2020-10-12 15:58:24,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:24,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:24,785 INFO L225 Difference]: With dead ends: 55564 [2020-10-12 15:58:24,785 INFO L226 Difference]: Without dead ends: 37386 [2020-10-12 15:58:24,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37386 states. [2020-10-12 15:58:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37386 to 37384. [2020-10-12 15:58:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37384 states. [2020-10-12 15:58:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37384 states to 37384 states and 49158 transitions. [2020-10-12 15:58:26,422 INFO L78 Accepts]: Start accepts. Automaton has 37384 states and 49158 transitions. Word has length 33 [2020-10-12 15:58:26,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:26,422 INFO L479 AbstractCegarLoop]: Abstraction has 37384 states and 49158 transitions. [2020-10-12 15:58:26,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 37384 states and 49158 transitions. [2020-10-12 15:58:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:26,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:26,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:26,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:58:26,449 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:26,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:26,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1478771549, now seen corresponding path program 1 times [2020-10-12 15:58:26,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:26,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625054518] [2020-10-12 15:58:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:26,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:26,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:26,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 15:58:26,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:58:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:26,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:26,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:26,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:26,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:26,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:26,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:26,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:26,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:26,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:26,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:26,521 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 15:58:26,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625054518] [2020-10-12 15:58:26,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:26,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:26,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813757357] [2020-10-12 15:58:26,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:26,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:26,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:26,523 INFO L87 Difference]: Start difference. First operand 37384 states and 49158 transitions. Second operand 3 states. [2020-10-12 15:58:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:26,867 INFO L93 Difference]: Finished difference Result 56076 states and 73480 transitions. [2020-10-12 15:58:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:26,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:26,910 INFO L225 Difference]: With dead ends: 56076 [2020-10-12 15:58:26,911 INFO L226 Difference]: Without dead ends: 37898 [2020-10-12 15:58:26,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37898 states. [2020-10-12 15:58:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37898 to 37896. [2020-10-12 15:58:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37896 states. [2020-10-12 15:58:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37896 states to 37896 states and 49158 transitions. [2020-10-12 15:58:27,738 INFO L78 Accepts]: Start accepts. Automaton has 37896 states and 49158 transitions. Word has length 33 [2020-10-12 15:58:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:27,739 INFO L479 AbstractCegarLoop]: Abstraction has 37896 states and 49158 transitions. [2020-10-12 15:58:27,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:27,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37896 states and 49158 transitions. [2020-10-12 15:58:27,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:27,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:27,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:27,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:58:27,764 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:27,765 INFO L82 PathProgramCache]: Analyzing trace with hash -109576353, now seen corresponding path program 1 times [2020-10-12 15:58:27,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:27,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486691718] [2020-10-12 15:58:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:27,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:27,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:27,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:27,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:27,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 15:58:27,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:58:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:27,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:27,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:27,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:27,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:27,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:27,809 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 15:58:27,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486691718] [2020-10-12 15:58:27,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:27,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:27,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246843770] [2020-10-12 15:58:27,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:27,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:27,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:27,811 INFO L87 Difference]: Start difference. First operand 37896 states and 49158 transitions. Second operand 3 states. [2020-10-12 15:58:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:28,281 INFO L93 Difference]: Finished difference Result 63500 states and 83464 transitions. [2020-10-12 15:58:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:28,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:28,349 INFO L225 Difference]: With dead ends: 63500 [2020-10-12 15:58:28,349 INFO L226 Difference]: Without dead ends: 63498 [2020-10-12 15:58:28,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63498 states. [2020-10-12 15:58:29,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63498 to 57352. [2020-10-12 15:58:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57352 states. [2020-10-12 15:58:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57352 states to 57352 states and 72198 transitions. [2020-10-12 15:58:29,357 INFO L78 Accepts]: Start accepts. Automaton has 57352 states and 72198 transitions. Word has length 33 [2020-10-12 15:58:29,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:29,357 INFO L479 AbstractCegarLoop]: Abstraction has 57352 states and 72198 transitions. [2020-10-12 15:58:29,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 57352 states and 72198 transitions. [2020-10-12 15:58:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:29,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:29,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:29,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:58:29,404 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:29,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:29,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1130644707, now seen corresponding path program 1 times [2020-10-12 15:58:29,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:29,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943316268] [2020-10-12 15:58:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:29,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:29,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:58:29,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:58:29,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:29,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:29,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:29,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:29,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:29,452 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 15:58:29,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943316268] [2020-10-12 15:58:29,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:29,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:29,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925000334] [2020-10-12 15:58:29,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:29,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:29,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:29,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:29,453 INFO L87 Difference]: Start difference. First operand 57352 states and 72198 transitions. Second operand 3 states. [2020-10-12 15:58:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:30,313 INFO L93 Difference]: Finished difference Result 130060 states and 163336 transitions. [2020-10-12 15:58:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:30,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:30,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:30,423 INFO L225 Difference]: With dead ends: 130060 [2020-10-12 15:58:30,424 INFO L226 Difference]: Without dead ends: 73738 [2020-10-12 15:58:30,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73738 states. [2020-10-12 15:58:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73738 to 73736. [2020-10-12 15:58:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73736 states. [2020-10-12 15:58:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73736 states to 73736 states and 91142 transitions. [2020-10-12 15:58:31,682 INFO L78 Accepts]: Start accepts. Automaton has 73736 states and 91142 transitions. Word has length 33 [2020-10-12 15:58:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:31,682 INFO L479 AbstractCegarLoop]: Abstraction has 73736 states and 91142 transitions. [2020-10-12 15:58:31,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 73736 states and 91142 transitions. [2020-10-12 15:58:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:58:31,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:31,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:31,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:58:31,728 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:31,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:31,728 INFO L82 PathProgramCache]: Analyzing trace with hash 898316171, now seen corresponding path program 1 times [2020-10-12 15:58:31,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:31,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944735046] [2020-10-12 15:58:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:58:31,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:31,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 15:58:31,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:58:31,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:31,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:31,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:31,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:31,795 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 15:58:31,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944735046] [2020-10-12 15:58:31,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:31,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:31,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90374780] [2020-10-12 15:58:31,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:31,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:31,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:31,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:31,797 INFO L87 Difference]: Start difference. First operand 73736 states and 91142 transitions. Second operand 3 states. [2020-10-12 15:58:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:32,741 INFO L93 Difference]: Finished difference Result 121868 states and 151560 transitions. [2020-10-12 15:58:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:32,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-12 15:58:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:32,863 INFO L225 Difference]: With dead ends: 121868 [2020-10-12 15:58:32,863 INFO L226 Difference]: Without dead ends: 121866 [2020-10-12 15:58:32,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121866 states. [2020-10-12 15:58:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121866 to 113672. [2020-10-12 15:58:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113672 states. [2020-10-12 15:58:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113672 states to 113672 states and 137222 transitions. [2020-10-12 15:58:35,687 INFO L78 Accepts]: Start accepts. Automaton has 113672 states and 137222 transitions. Word has length 34 [2020-10-12 15:58:35,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:35,687 INFO L479 AbstractCegarLoop]: Abstraction has 113672 states and 137222 transitions. [2020-10-12 15:58:35,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:35,687 INFO L276 IsEmpty]: Start isEmpty. Operand 113672 states and 137222 transitions. [2020-10-12 15:58:35,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:58:35,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:35,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:35,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:58:35,744 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:35,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:35,744 INFO L82 PathProgramCache]: Analyzing trace with hash -122752183, now seen corresponding path program 1 times [2020-10-12 15:58:35,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:35,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458719485] [2020-10-12 15:58:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:35,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:58:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:58:35,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:58:35,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:35,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:35,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:35,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:35,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:35,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:35,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:35,802 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 15:58:35,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458719485] [2020-10-12 15:58:35,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:35,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:35,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088647486] [2020-10-12 15:58:35,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:35,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:35,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:35,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:35,803 INFO L87 Difference]: Start difference. First operand 113672 states and 137222 transitions. Second operand 3 states. [2020-10-12 15:58:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:37,262 INFO L93 Difference]: Finished difference Result 257036 states and 309256 transitions. [2020-10-12 15:58:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:37,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-12 15:58:37,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:37,404 INFO L225 Difference]: With dead ends: 257036 [2020-10-12 15:58:37,404 INFO L226 Difference]: Without dead ends: 144394 [2020-10-12 15:58:37,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:37,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144394 states. [2020-10-12 15:58:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144394 to 144392. [2020-10-12 15:58:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144392 states. [2020-10-12 15:58:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144392 states to 144392 states and 169990 transitions. [2020-10-12 15:58:41,682 INFO L78 Accepts]: Start accepts. Automaton has 144392 states and 169990 transitions. Word has length 34 [2020-10-12 15:58:41,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:41,683 INFO L479 AbstractCegarLoop]: Abstraction has 144392 states and 169990 transitions. [2020-10-12 15:58:41,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 144392 states and 169990 transitions. [2020-10-12 15:58:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:58:41,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:41,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:41,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:58:41,744 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:41,744 INFO L82 PathProgramCache]: Analyzing trace with hash 2078213684, now seen corresponding path program 1 times [2020-10-12 15:58:41,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:41,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464144677] [2020-10-12 15:58:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:41,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:58:41,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 15:58:41,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:41,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:58:41,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:41,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:41,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:41,826 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 15:58:41,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464144677] [2020-10-12 15:58:41,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:41,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:41,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566175758] [2020-10-12 15:58:41,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:41,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:41,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:41,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:41,828 INFO L87 Difference]: Start difference. First operand 144392 states and 169990 transitions. Second operand 3 states. [2020-10-12 15:58:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:43,692 INFO L93 Difference]: Finished difference Result 234506 states and 274439 transitions. [2020-10-12 15:58:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:43,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-12 15:58:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:43,951 INFO L225 Difference]: With dead ends: 234506 [2020-10-12 15:58:43,951 INFO L226 Difference]: Without dead ends: 234504 [2020-10-12 15:58:43,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:44,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234504 states. [2020-10-12 15:58:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234504 to 226312. [2020-10-12 15:58:48,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226312 states. [2020-10-12 15:58:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226312 states to 226312 states and 262150 transitions. [2020-10-12 15:58:49,674 INFO L78 Accepts]: Start accepts. Automaton has 226312 states and 262150 transitions. Word has length 35 [2020-10-12 15:58:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:49,674 INFO L479 AbstractCegarLoop]: Abstraction has 226312 states and 262150 transitions. [2020-10-12 15:58:49,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 226312 states and 262150 transitions. [2020-10-12 15:58:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:58:49,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:49,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:49,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:58:49,824 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:49,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1057145330, now seen corresponding path program 1 times [2020-10-12 15:58:49,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:49,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673595799] [2020-10-12 15:58:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:49,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:49,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:58:49,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:49,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 15:58:49,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:58:49,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:58:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:49,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:49,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:49,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:49,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:49,898 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 15:58:49,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673595799] [2020-10-12 15:58:49,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:49,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:49,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794897083] [2020-10-12 15:58:49,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:49,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:49,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:49,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:49,901 INFO L87 Difference]: Start difference. First operand 226312 states and 262150 transitions. Second operand 3 states. [2020-10-12 15:58:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:56,206 INFO L93 Difference]: Finished difference Result 508936 states and 585734 transitions. [2020-10-12 15:58:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:56,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-12 15:58:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:56,207 INFO L225 Difference]: With dead ends: 508936 [2020-10-12 15:58:56,207 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 15:58:56,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 15:58:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 15:58:56,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 15:58:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 15:58:56,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-12 15:58:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:56,413 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 15:58:56,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:56,413 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 15:58:56,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 15:58:56,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:58:56,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 15:58:56,476 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 15:58:56,476 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:58:56,476 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:58:56,476 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 15:58:56,476 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 15:58:56,476 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 15:58:56,477 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 205) no Hoare annotation was computed. [2020-10-12 15:58:56,477 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-10-12 15:58:56,477 INFO L268 CegarLoopResult]: For program point L85-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,477 INFO L271 CegarLoopResult]: At program point L201(lines 5 205) the Hoare annotation is: true [2020-10-12 15:58:56,477 INFO L268 CegarLoopResult]: For program point L135-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,477 INFO L268 CegarLoopResult]: For program point L185-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,477 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-10-12 15:58:56,477 INFO L268 CegarLoopResult]: For program point L186(line 186) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 205) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point L170-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point L121-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point L105-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point L155-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point L89-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point L156(line 156) no Hoare annotation was computed. [2020-10-12 15:58:56,478 INFO L268 CegarLoopResult]: For program point L140-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L190-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L125-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L175-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L109-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L93-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2020-10-12 15:58:56,479 INFO L268 CegarLoopResult]: For program point L160-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,480 INFO L268 CegarLoopResult]: For program point L161(line 161) no Hoare annotation was computed. [2020-10-12 15:58:56,480 INFO L268 CegarLoopResult]: For program point L145-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,480 INFO L271 CegarLoopResult]: At program point L195-1(lines 48 200) the Hoare annotation is: true [2020-10-12 15:58:56,480 INFO L268 CegarLoopResult]: For program point L129-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,480 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 203) no Hoare annotation was computed. [2020-10-12 15:58:56,480 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 205) the Hoare annotation is: true [2020-10-12 15:58:56,480 INFO L268 CegarLoopResult]: For program point L146(line 146) no Hoare annotation was computed. [2020-10-12 15:58:56,480 INFO L268 CegarLoopResult]: For program point L113-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,481 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-10-12 15:58:56,481 INFO L264 CegarLoopResult]: At program point L196-1(lines 5 205) the Hoare annotation is: false [2020-10-12 15:58:56,481 INFO L268 CegarLoopResult]: For program point L97-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,481 INFO L268 CegarLoopResult]: For program point L180-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,481 INFO L268 CegarLoopResult]: For program point L81(lines 81 83) no Hoare annotation was computed. [2020-10-12 15:58:56,481 INFO L268 CegarLoopResult]: For program point L81-2(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,481 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-10-12 15:58:56,481 INFO L268 CegarLoopResult]: For program point L165-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,481 INFO L268 CegarLoopResult]: For program point L50(lines 50 52) no Hoare annotation was computed. [2020-10-12 15:58:56,482 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-10-12 15:58:56,482 INFO L268 CegarLoopResult]: For program point L150-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,482 INFO L268 CegarLoopResult]: For program point L117-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,482 INFO L268 CegarLoopResult]: For program point L101-1(lines 48 200) no Hoare annotation was computed. [2020-10-12 15:58:56,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:58:56 BoogieIcfgContainer [2020-10-12 15:58:56,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:58:56,505 INFO L168 Benchmark]: Toolchain (without parser) took 45749.33 ms. Allocated memory was 146.3 MB in the beginning and 3.0 GB in the end (delta: 2.9 GB). Free memory was 102.5 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 779.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:56,506 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:58:56,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.47 ms. Allocated memory is still 146.3 MB. Free memory was 102.2 MB in the beginning and 91.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:56,507 INFO L168 Benchmark]: Boogie Preprocessor took 175.73 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 91.1 MB in the beginning and 179.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:56,507 INFO L168 Benchmark]: RCFGBuilder took 454.89 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:56,507 INFO L168 Benchmark]: TraceAbstraction took 44698.60 ms. Allocated memory was 201.9 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 156.2 MB in the beginning and 2.2 GB in the end (delta: -2.0 GB). Peak memory consumption was 777.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:58:56,509 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.47 ms. Allocated memory is still 146.3 MB. Free memory was 102.2 MB in the beginning and 91.1 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 175.73 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 91.1 MB in the beginning and 179.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.89 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.9 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44698.60 ms. Allocated memory was 201.9 MB in the beginning and 3.0 GB in the end (delta: 2.8 GB). Free memory was 156.2 MB in the beginning and 2.2 GB in the end (delta: -2.0 GB). Peak memory consumption was 777.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 203]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44.5s, OverallIterations: 35, TraceHistogramMax: 1, AutomataDifference: 18.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3776 SDtfs, 1866 SDslu, 2606 SDs, 0 SdLazy, 187 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226312occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 21.0s AutomataMinimizationTime, 35 MinimizatonAttempts, 32804 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 8202 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1017 NumberOfCodeBlocks, 1017 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 982 ConstructedInterpolants, 0 QuantifiedInterpolants, 57550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...