/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_14-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:58:09,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:58:09,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:58:09,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:58:09,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:58:09,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:58:09,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:58:09,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:58:09,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:58:09,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:58:09,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:58:09,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:58:09,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:58:09,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:58:09,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:58:09,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:58:09,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:58:09,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:58:09,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:58:09,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:58:09,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:58:09,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:58:09,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:58:09,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:58:09,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:58:09,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:58:09,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:58:09,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:58:09,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:58:09,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:58:09,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:58:09,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:58:09,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:58:09,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:58:09,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:58:09,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:58:09,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:58:09,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:58:09,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:58:09,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:58:09,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:58:09,161 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 15:58:09,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:58:09,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:58:09,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:58:09,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:58:09,207 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:58:09,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:58:09,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:58:09,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:58:09,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:58:09,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:58:09,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:58:09,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:58:09,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:58:09,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:58:09,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:58:09,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:58:09,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:58:09,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:58:09,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:58:09,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:58:09,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:58:09,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:58:09,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:58:09,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:58:09,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:58:09,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:58:09,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:58:09,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:58:09,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:58:09,213 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 15:58:09,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:58:09,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:58:09,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:58:09,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:58:09,519 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:58:09,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-1.c [2020-10-12 15:58:09,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22eafa663/6c7185358d53463ebdb82f35dcac7f5a/FLAG0c7863901 [2020-10-12 15:58:10,016 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:58:10,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_14-1.c [2020-10-12 15:58:10,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22eafa663/6c7185358d53463ebdb82f35dcac7f5a/FLAG0c7863901 [2020-10-12 15:58:10,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22eafa663/6c7185358d53463ebdb82f35dcac7f5a [2020-10-12 15:58:10,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:58:10,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:58:10,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:58:10,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:58:10,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:58:10,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f71ec06 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 15:58:10,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:58:10,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:58:10,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:58:10,652 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:58:10,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:58:10,696 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:58:10,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10 WrapperNode [2020-10-12 15:58:10,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:58:10,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:58:10,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:58:10,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:58:10,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (1/1) ... [2020-10-12 15:58:10,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:58:10,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:58:10,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:58:10,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:58:10,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (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 15:58:10,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:58:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:58:10,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:58:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:58:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:58:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:58:10,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:58:10,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:58:11,290 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:58:11,291 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 15:58:11,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:58:11 BoogieIcfgContainer [2020-10-12 15:58:11,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:58:11,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:58:11,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:58:11,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:58:11,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:58:10" (1/3) ... [2020-10-12 15:58:11,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f5282a 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 15:58:11,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:58:10" (2/3) ... [2020-10-12 15:58:11,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f5282a 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 15:58:11,301 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 15:58:11,303 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-1.c [2020-10-12 15:58:11,318 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:58:11,325 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:58:11,339 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:58:11,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:58:11,364 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:58:11,364 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:58:11,365 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:58:11,365 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:58:11,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:58:11,365 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:58:11,365 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:58:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-12 15:58:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:11,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:11,392 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 15:58:11,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1694520263, now seen corresponding path program 1 times [2020-10-12 15:58:11,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:11,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128473778] [2020-10-12 15:58:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:11,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:11,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:11,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:11,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 15:58:11,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 15:58:11,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:11,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:11,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:11,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:11,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:11,874 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 15:58:11,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128473778] [2020-10-12 15:58:11,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:11,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:11,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265727699] [2020-10-12 15:58:11,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:11,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:11,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:11,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:11,900 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-10-12 15:58:11,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:11,959 INFO L93 Difference]: Finished difference Result 111 states and 198 transitions. [2020-10-12 15:58:11,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:11,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:11,973 INFO L225 Difference]: With dead ends: 111 [2020-10-12 15:58:11,974 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 15:58:11,977 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 15:58:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 15:58:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 66. [2020-10-12 15:58:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 15:58:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 121 transitions. [2020-10-12 15:58:12,025 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 121 transitions. Word has length 24 [2020-10-12 15:58:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:12,026 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 121 transitions. [2020-10-12 15:58:12,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 121 transitions. [2020-10-12 15:58:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:58:12,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:12,027 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 15:58:12,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:58:12,028 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:12,029 INFO L82 PathProgramCache]: Analyzing trace with hash 106172361, now seen corresponding path program 1 times [2020-10-12 15:58:12,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:12,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93724090] [2020-10-12 15:58:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:58:12,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 15:58:12,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:12,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:12,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:12,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:12,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:12,167 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 15:58:12,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93724090] [2020-10-12 15:58:12,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:12,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:12,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648420765] [2020-10-12 15:58:12,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:12,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:12,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:12,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:12,171 INFO L87 Difference]: Start difference. First operand 66 states and 121 transitions. Second operand 3 states. [2020-10-12 15:58:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:12,201 INFO L93 Difference]: Finished difference Result 157 states and 292 transitions. [2020-10-12 15:58:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:12,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-12 15:58:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:12,204 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:58:12,204 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 15:58:12,206 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 15:58:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 15:58:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-10-12 15:58:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 15:58:12,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 173 transitions. [2020-10-12 15:58:12,222 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 173 transitions. Word has length 24 [2020-10-12 15:58:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:12,222 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 173 transitions. [2020-10-12 15:58:12,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 173 transitions. [2020-10-12 15:58:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:58:12,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:12,224 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 15:58:12,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:58:12,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:12,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:12,225 INFO L82 PathProgramCache]: Analyzing trace with hash 990732685, now seen corresponding path program 1 times [2020-10-12 15:58:12,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:12,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778510613] [2020-10-12 15:58:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:58:12,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 15:58:12,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:12,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:12,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:12,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:12,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:12,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:12,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:12,382 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 15:58:12,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778510613] [2020-10-12 15:58:12,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:12,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:12,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52646673] [2020-10-12 15:58:12,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:12,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:12,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:12,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:12,385 INFO L87 Difference]: Start difference. First operand 94 states and 173 transitions. Second operand 3 states. [2020-10-12 15:58:12,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:12,407 INFO L93 Difference]: Finished difference Result 181 states and 335 transitions. [2020-10-12 15:58:12,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:12,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-12 15:58:12,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:12,410 INFO L225 Difference]: With dead ends: 181 [2020-10-12 15:58:12,410 INFO L226 Difference]: Without dead ends: 179 [2020-10-12 15:58:12,411 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 15:58:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-12 15:58:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 125. [2020-10-12 15:58:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-12 15:58:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 231 transitions. [2020-10-12 15:58:12,427 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 231 transitions. Word has length 25 [2020-10-12 15:58:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:12,427 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 231 transitions. [2020-10-12 15:58:12,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 231 transitions. [2020-10-12 15:58:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:58:12,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:12,429 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 15:58:12,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:58:12,430 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:12,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:12,430 INFO L82 PathProgramCache]: Analyzing trace with hash -597615217, now seen corresponding path program 1 times [2020-10-12 15:58:12,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:12,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982586618] [2020-10-12 15:58:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:58:12,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:12,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 15:58:12,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:12,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:12,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:12,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:12,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:12,529 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 15:58:12,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982586618] [2020-10-12 15:58:12,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:12,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:12,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693675215] [2020-10-12 15:58:12,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:12,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:12,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:12,532 INFO L87 Difference]: Start difference. First operand 125 states and 231 transitions. Second operand 3 states. [2020-10-12 15:58:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:12,556 INFO L93 Difference]: Finished difference Result 301 states and 561 transitions. [2020-10-12 15:58:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:12,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-12 15:58:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:12,559 INFO L225 Difference]: With dead ends: 301 [2020-10-12 15:58:12,559 INFO L226 Difference]: Without dead ends: 181 [2020-10-12 15:58:12,560 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 15:58:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-12 15:58:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-10-12 15:58:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-12 15:58:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 330 transitions. [2020-10-12 15:58:12,575 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 330 transitions. Word has length 25 [2020-10-12 15:58:12,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:12,575 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 330 transitions. [2020-10-12 15:58:12,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 330 transitions. [2020-10-12 15:58:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:58:12,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:12,578 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 15:58:12,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:58:12,578 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:12,579 INFO L82 PathProgramCache]: Analyzing trace with hash 648154588, now seen corresponding path program 1 times [2020-10-12 15:58:12,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:12,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079121424] [2020-10-12 15:58:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:58:12,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 15:58:12,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:12,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:12,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:12,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:12,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:12,739 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 15:58:12,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079121424] [2020-10-12 15:58:12,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:12,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:12,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016511555] [2020-10-12 15:58:12,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:12,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:12,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:12,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:12,742 INFO L87 Difference]: Start difference. First operand 179 states and 330 transitions. Second operand 3 states. [2020-10-12 15:58:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:12,763 INFO L93 Difference]: Finished difference Result 343 states and 636 transitions. [2020-10-12 15:58:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:12,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-12 15:58:12,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:12,766 INFO L225 Difference]: With dead ends: 343 [2020-10-12 15:58:12,766 INFO L226 Difference]: Without dead ends: 341 [2020-10-12 15:58:12,767 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 15:58:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-12 15:58:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 243. [2020-10-12 15:58:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-12 15:58:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 446 transitions. [2020-10-12 15:58:12,785 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 446 transitions. Word has length 26 [2020-10-12 15:58:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:12,785 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 446 transitions. [2020-10-12 15:58:12,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 446 transitions. [2020-10-12 15:58:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:58:12,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:12,788 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 15:58:12,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:58:12,789 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:12,789 INFO L82 PathProgramCache]: Analyzing trace with hash -940193314, now seen corresponding path program 1 times [2020-10-12 15:58:12,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:12,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004503398] [2020-10-12 15:58:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:12,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:12,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:58:12,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:12,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-12 15:58:12,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:12,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:12,998 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: 7 [2020-10-12 15:58:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:12,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:13,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:58:13,004 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 15:58:13,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004503398] [2020-10-12 15:58:13,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538546696] [2020-10-12 15:58:13,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,008 INFO L87 Difference]: Start difference. First operand 243 states and 446 transitions. Second operand 3 states. [2020-10-12 15:58:13,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,039 INFO L93 Difference]: Finished difference Result 587 states and 1084 transitions. [2020-10-12 15:58:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-12 15:58:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,044 INFO L225 Difference]: With dead ends: 587 [2020-10-12 15:58:13,046 INFO L226 Difference]: Without dead ends: 349 [2020-10-12 15:58:13,048 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 15:58:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-12 15:58:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-10-12 15:58:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-12 15:58:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 634 transitions. [2020-10-12 15:58:13,083 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 634 transitions. Word has length 26 [2020-10-12 15:58:13,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,084 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 634 transitions. [2020-10-12 15:58:13,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 634 transitions. [2020-10-12 15:58:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:13,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,086 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 15:58:13,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:58:13,086 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1381831486, now seen corresponding path program 1 times [2020-10-12 15:58:13,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082917037] [2020-10-12 15:58:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:13,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:13,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 15:58:13,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:58:13,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:13,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:58:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,299 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 [2082917037] [2020-10-12 15:58:13,302 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 [1105942797] [2020-10-12 15:58:13,303 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 347 states and 634 transitions. Second operand 3 states. [2020-10-12 15:58:13,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,328 INFO L93 Difference]: Finished difference Result 522 states and 948 transitions. [2020-10-12 15:58:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:13,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,331 INFO L225 Difference]: With dead ends: 522 [2020-10-12 15:58:13,331 INFO L226 Difference]: Without dead ends: 352 [2020-10-12 15:58:13,332 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 15:58:13,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-12 15:58:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2020-10-12 15:58:13,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-12 15:58:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 630 transitions. [2020-10-12 15:58:13,343 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 630 transitions. Word has length 27 [2020-10-12 15:58:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,343 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 630 transitions. [2020-10-12 15:58:13,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 630 transitions. [2020-10-12 15:58:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:13,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,345 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 15:58:13,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:58:13,345 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,346 INFO L82 PathProgramCache]: Analyzing trace with hash 2095487360, now seen corresponding path program 1 times [2020-10-12 15:58:13,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405872667] [2020-10-12 15:58:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:13,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:13,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 15:58:13,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:58:13,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:13,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,483 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 15:58:13,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405872667] [2020-10-12 15:58:13,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779658457] [2020-10-12 15:58:13,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,484 INFO L87 Difference]: Start difference. First operand 350 states and 630 transitions. Second operand 3 states. [2020-10-12 15:58:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,502 INFO L93 Difference]: Finished difference Result 524 states and 940 transitions. [2020-10-12 15:58:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,505 INFO L225 Difference]: With dead ends: 524 [2020-10-12 15:58:13,506 INFO L226 Difference]: Without dead ends: 354 [2020-10-12 15:58:13,507 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 15:58:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-12 15:58:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2020-10-12 15:58:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-10-12 15:58:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 626 transitions. [2020-10-12 15:58:13,517 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 626 transitions. Word has length 27 [2020-10-12 15:58:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,518 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 626 transitions. [2020-10-12 15:58:13,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 626 transitions. [2020-10-12 15:58:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:13,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,519 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 15:58:13,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:58:13,520 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,520 INFO L82 PathProgramCache]: Analyzing trace with hash 406543618, now seen corresponding path program 1 times [2020-10-12 15:58:13,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32360483] [2020-10-12 15:58:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:13,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:13,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:58:13,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:58:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:13,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:13,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,615 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 15:58:13,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32360483] [2020-10-12 15:58:13,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375763909] [2020-10-12 15:58:13,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,618 INFO L87 Difference]: Start difference. First operand 352 states and 626 transitions. Second operand 3 states. [2020-10-12 15:58:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,639 INFO L93 Difference]: Finished difference Result 528 states and 936 transitions. [2020-10-12 15:58:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,643 INFO L225 Difference]: With dead ends: 528 [2020-10-12 15:58:13,643 INFO L226 Difference]: Without dead ends: 358 [2020-10-12 15:58:13,644 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 15:58:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-12 15:58:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-10-12 15:58:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 15:58:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 626 transitions. [2020-10-12 15:58:13,657 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 626 transitions. Word has length 27 [2020-10-12 15:58:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,657 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 626 transitions. [2020-10-12 15:58:13,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 626 transitions. [2020-10-12 15:58:13,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:13,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:13,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:58:13,659 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1587601088, now seen corresponding path program 1 times [2020-10-12 15:58:13,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060131811] [2020-10-12 15:58:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:13,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:58:13,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:13,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:13,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:13,736 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 15:58:13,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060131811] [2020-10-12 15:58:13,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085303062] [2020-10-12 15:58:13,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,739 INFO L87 Difference]: Start difference. First operand 356 states and 626 transitions. Second operand 3 states. [2020-10-12 15:58:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,763 INFO L93 Difference]: Finished difference Result 668 states and 1192 transitions. [2020-10-12 15:58:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:13,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,767 INFO L225 Difference]: With dead ends: 668 [2020-10-12 15:58:13,768 INFO L226 Difference]: Without dead ends: 666 [2020-10-12 15:58:13,768 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 15:58:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-12 15:58:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 488. [2020-10-12 15:58:13,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-12 15:58:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 846 transitions. [2020-10-12 15:58:13,783 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 846 transitions. Word has length 27 [2020-10-12 15:58:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,784 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 846 transitions. [2020-10-12 15:58:13,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 846 transitions. [2020-10-12 15:58:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 15:58:13,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,786 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 15:58:13,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:58:13,787 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1119018306, now seen corresponding path program 1 times [2020-10-12 15:58:13,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803970202] [2020-10-12 15:58:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 15:58:13,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:58:13,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:13,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:13,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:13,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:13,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:13,865 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 15:58:13,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803970202] [2020-10-12 15:58:13,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:13,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:13,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819419892] [2020-10-12 15:58:13,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:13,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:13,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:13,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:13,868 INFO L87 Difference]: Start difference. First operand 488 states and 846 transitions. Second operand 3 states. [2020-10-12 15:58:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:13,899 INFO L93 Difference]: Finished difference Result 1164 states and 2032 transitions. [2020-10-12 15:58:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:13,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-12 15:58:13,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:13,904 INFO L225 Difference]: With dead ends: 1164 [2020-10-12 15:58:13,905 INFO L226 Difference]: Without dead ends: 690 [2020-10-12 15:58:13,906 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 15:58:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-12 15:58:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 688. [2020-10-12 15:58:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-12 15:58:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1190 transitions. [2020-10-12 15:58:13,927 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1190 transitions. Word has length 27 [2020-10-12 15:58:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:13,928 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1190 transitions. [2020-10-12 15:58:13,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1190 transitions. [2020-10-12 15:58:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:58:13,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:13,930 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 15:58:13,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:58:13,931 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1970780365, now seen corresponding path program 1 times [2020-10-12 15:58:13,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:13,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977490336] [2020-10-12 15:58:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:13,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:13,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:58:13,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 15:58:13,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:13,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:14,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:14,019 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 15:58:14,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977490336] [2020-10-12 15:58:14,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291614721] [2020-10-12 15:58:14,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,021 INFO L87 Difference]: Start difference. First operand 688 states and 1190 transitions. Second operand 3 states. [2020-10-12 15:58:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,069 INFO L93 Difference]: Finished difference Result 1284 states and 2256 transitions. [2020-10-12 15:58:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:14,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-12 15:58:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,077 INFO L225 Difference]: With dead ends: 1284 [2020-10-12 15:58:14,077 INFO L226 Difference]: Without dead ends: 1282 [2020-10-12 15:58:14,078 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 15:58:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2020-10-12 15:58:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 960. [2020-10-12 15:58:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-10-12 15:58:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1630 transitions. [2020-10-12 15:58:14,107 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1630 transitions. Word has length 28 [2020-10-12 15:58:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,107 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1630 transitions. [2020-10-12 15:58:14,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1630 transitions. [2020-10-12 15:58:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:58:14,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,109 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 15:58:14,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:58:14,110 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:14,110 INFO L82 PathProgramCache]: Analyzing trace with hash 735839029, now seen corresponding path program 1 times [2020-10-12 15:58:14,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:14,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527371814] [2020-10-12 15:58:14,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:58:14,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:14,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 15:58:14,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:14,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:14,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,192 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 15:58:14,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527371814] [2020-10-12 15:58:14,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011562940] [2020-10-12 15:58:14,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,195 INFO L87 Difference]: Start difference. First operand 960 states and 1630 transitions. Second operand 3 states. [2020-10-12 15:58:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,230 INFO L93 Difference]: Finished difference Result 2292 states and 3920 transitions. [2020-10-12 15:58:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:14,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-12 15:58:14,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,238 INFO L225 Difference]: With dead ends: 2292 [2020-10-12 15:58:14,238 INFO L226 Difference]: Without dead ends: 1346 [2020-10-12 15:58:14,240 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 15:58:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-12 15:58:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1344. [2020-10-12 15:58:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-10-12 15:58:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 2278 transitions. [2020-10-12 15:58:14,274 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 2278 transitions. Word has length 28 [2020-10-12 15:58:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,275 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 2278 transitions. [2020-10-12 15:58:14,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 2278 transitions. [2020-10-12 15:58:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:58:14,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:14,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:58:14,277 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:14,278 INFO L82 PathProgramCache]: Analyzing trace with hash -964435723, now seen corresponding path program 1 times [2020-10-12 15:58:14,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:14,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917433193] [2020-10-12 15:58:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:58:14,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 15:58:14,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:14,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:58:14,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917433193] [2020-10-12 15:58:14,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047028650] [2020-10-12 15:58:14,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,400 INFO L87 Difference]: Start difference. First operand 1344 states and 2278 transitions. Second operand 3 states. [2020-10-12 15:58:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,433 INFO L93 Difference]: Finished difference Result 2484 states and 4280 transitions. [2020-10-12 15:58:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:14,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-12 15:58:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,446 INFO L225 Difference]: With dead ends: 2484 [2020-10-12 15:58:14,446 INFO L226 Difference]: Without dead ends: 2482 [2020-10-12 15:58:14,447 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 15:58:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2020-10-12 15:58:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1904. [2020-10-12 15:58:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-10-12 15:58:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 3158 transitions. [2020-10-12 15:58:14,503 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 3158 transitions. Word has length 29 [2020-10-12 15:58:14,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,503 INFO L479 AbstractCegarLoop]: Abstraction has 1904 states and 3158 transitions. [2020-10-12 15:58:14,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 3158 transitions. [2020-10-12 15:58:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:58:14,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,507 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 15:58:14,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:58:14,507 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1742183671, now seen corresponding path program 1 times [2020-10-12 15:58:14,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:14,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576567455] [2020-10-12 15:58:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:58:14,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:14,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 15:58:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:14,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,626 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 15:58:14,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576567455] [2020-10-12 15:58:14,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328165025] [2020-10-12 15:58:14,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,628 INFO L87 Difference]: Start difference. First operand 1904 states and 3158 transitions. Second operand 3 states. [2020-10-12 15:58:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:14,692 INFO L93 Difference]: Finished difference Result 4532 states and 7576 transitions. [2020-10-12 15:58:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:14,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-12 15:58:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:14,705 INFO L225 Difference]: With dead ends: 4532 [2020-10-12 15:58:14,705 INFO L226 Difference]: Without dead ends: 2642 [2020-10-12 15:58:14,708 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 15:58:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2020-10-12 15:58:14,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2640. [2020-10-12 15:58:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2640 states. [2020-10-12 15:58:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 4374 transitions. [2020-10-12 15:58:14,781 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 4374 transitions. Word has length 29 [2020-10-12 15:58:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:14,782 INFO L479 AbstractCegarLoop]: Abstraction has 2640 states and 4374 transitions. [2020-10-12 15:58:14,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 4374 transitions. [2020-10-12 15:58:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:14,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:14,785 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 15:58:14,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:58:14,785 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:14,786 INFO L82 PathProgramCache]: Analyzing trace with hash 167477448, now seen corresponding path program 1 times [2020-10-12 15:58:14,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:14,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746823761] [2020-10-12 15:58:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:14,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 15:58:14,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:58:14,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:14,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:14,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:14,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:14,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:14,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:14,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:14,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:14,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:14,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:14,976 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 15:58:14,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746823761] [2020-10-12 15:58:14,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:14,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:14,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993515745] [2020-10-12 15:58:14,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:14,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:14,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:14,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:14,983 INFO L87 Difference]: Start difference. First operand 2640 states and 4374 transitions. Second operand 3 states. [2020-10-12 15:58:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:15,041 INFO L93 Difference]: Finished difference Result 3948 states and 6520 transitions. [2020-10-12 15:58:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:15,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:15,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:15,056 INFO L225 Difference]: With dead ends: 3948 [2020-10-12 15:58:15,056 INFO L226 Difference]: Without dead ends: 2650 [2020-10-12 15:58:15,059 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 15:58:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2020-10-12 15:58:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2648. [2020-10-12 15:58:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2648 states. [2020-10-12 15:58:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 4326 transitions. [2020-10-12 15:58:15,145 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 4326 transitions. Word has length 30 [2020-10-12 15:58:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:15,145 INFO L479 AbstractCegarLoop]: Abstraction has 2648 states and 4326 transitions. [2020-10-12 15:58:15,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:15,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 4326 transitions. [2020-10-12 15:58:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:15,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:15,151 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 15:58:15,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:58:15,151 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:15,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:15,151 INFO L82 PathProgramCache]: Analyzing trace with hash -650171002, now seen corresponding path program 1 times [2020-10-12 15:58:15,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:15,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070417427] [2020-10-12 15:58:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:15,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 15:58:15,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:58:15,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:15,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:15,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:15,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:15,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:15,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:15,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:15,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:58:15,333 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 15:58:15,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070417427] [2020-10-12 15:58:15,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:15,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:15,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805652171] [2020-10-12 15:58:15,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:15,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:15,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:15,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,337 INFO L87 Difference]: Start difference. First operand 2648 states and 4326 transitions. Second operand 3 states. [2020-10-12 15:58:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:15,378 INFO L93 Difference]: Finished difference Result 3964 states and 6456 transitions. [2020-10-12 15:58:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:15,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:15,391 INFO L225 Difference]: With dead ends: 3964 [2020-10-12 15:58:15,392 INFO L226 Difference]: Without dead ends: 2666 [2020-10-12 15:58:15,395 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 15:58:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-10-12 15:58:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2020-10-12 15:58:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-10-12 15:58:15,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 4294 transitions. [2020-10-12 15:58:15,471 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 4294 transitions. Word has length 30 [2020-10-12 15:58:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:15,471 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 4294 transitions. [2020-10-12 15:58:15,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 4294 transitions. [2020-10-12 15:58:15,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:15,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:15,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:15,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:58:15,475 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:15,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:15,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1955852552, now seen corresponding path program 1 times [2020-10-12 15:58:15,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:15,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876487954] [2020-10-12 15:58:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:15,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 15:58:15,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:15,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:15,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:15,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:15,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:15,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:15,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:15,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:15,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:15,609 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 15:58:15,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876487954] [2020-10-12 15:58:15,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:15,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:15,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49735185] [2020-10-12 15:58:15,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:15,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:15,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:15,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:15,620 INFO L87 Difference]: Start difference. First operand 2664 states and 4294 transitions. Second operand 3 states. [2020-10-12 15:58:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:15,712 INFO L93 Difference]: Finished difference Result 4844 states and 7976 transitions. [2020-10-12 15:58:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:15,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:15,741 INFO L225 Difference]: With dead ends: 4844 [2020-10-12 15:58:15,741 INFO L226 Difference]: Without dead ends: 4842 [2020-10-12 15:58:15,746 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 15:58:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2020-10-12 15:58:15,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 3816. [2020-10-12 15:58:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3816 states. [2020-10-12 15:58:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 5990 transitions. [2020-10-12 15:58:15,916 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 5990 transitions. Word has length 30 [2020-10-12 15:58:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:15,917 INFO L479 AbstractCegarLoop]: Abstraction has 3816 states and 5990 transitions. [2020-10-12 15:58:15,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 5990 transitions. [2020-10-12 15:58:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:58:15,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:15,926 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 15:58:15,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:58:15,927 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:15,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:15,928 INFO L82 PathProgramCache]: Analyzing trace with hash 367504650, now seen corresponding path program 1 times [2020-10-12 15:58:15,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:15,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320428058] [2020-10-12 15:58:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:15,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:58:16,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:16,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 15:58:16,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:16,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:16,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:16,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:16,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:16,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:16,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:16,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:16,063 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 15:58:16,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320428058] [2020-10-12 15:58:16,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:16,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:16,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270910732] [2020-10-12 15:58:16,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:16,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:16,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:16,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:16,067 INFO L87 Difference]: Start difference. First operand 3816 states and 5990 transitions. Second operand 3 states. [2020-10-12 15:58:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:16,210 INFO L93 Difference]: Finished difference Result 9004 states and 14248 transitions. [2020-10-12 15:58:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:16,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-12 15:58:16,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:16,266 INFO L225 Difference]: With dead ends: 9004 [2020-10-12 15:58:16,267 INFO L226 Difference]: Without dead ends: 5226 [2020-10-12 15:58:16,281 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 15:58:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2020-10-12 15:58:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 5224. [2020-10-12 15:58:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5224 states. [2020-10-12 15:58:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 8198 transitions. [2020-10-12 15:58:16,591 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 8198 transitions. Word has length 30 [2020-10-12 15:58:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:16,592 INFO L479 AbstractCegarLoop]: Abstraction has 5224 states and 8198 transitions. [2020-10-12 15:58:16,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 8198 transitions. [2020-10-12 15:58:16,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:16,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:16,602 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 15:58:16,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:58:16,603 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:16,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:16,603 INFO L82 PathProgramCache]: Analyzing trace with hash 502101098, now seen corresponding path program 1 times [2020-10-12 15:58:16,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:16,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364569216] [2020-10-12 15:58:16,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:16,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:16,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 15:58:16,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:58:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:16,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:16,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:16,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:16,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:16,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:16,808 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 15:58:16,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364569216] [2020-10-12 15:58:16,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:16,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:16,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434679936] [2020-10-12 15:58:16,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:16,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:16,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:16,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:16,810 INFO L87 Difference]: Start difference. First operand 5224 states and 8198 transitions. Second operand 3 states. [2020-10-12 15:58:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:16,891 INFO L93 Difference]: Finished difference Result 7820 states and 12232 transitions. [2020-10-12 15:58:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:16,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:16,902 INFO L225 Difference]: With dead ends: 7820 [2020-10-12 15:58:16,903 INFO L226 Difference]: Without dead ends: 5258 [2020-10-12 15:58:16,908 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 15:58:16,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2020-10-12 15:58:17,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5256. [2020-10-12 15:58:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5256 states. [2020-10-12 15:58:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 8134 transitions. [2020-10-12 15:58:17,039 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 8134 transitions. Word has length 31 [2020-10-12 15:58:17,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:17,039 INFO L479 AbstractCegarLoop]: Abstraction has 5256 states and 8134 transitions. [2020-10-12 15:58:17,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:17,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 8134 transitions. [2020-10-12 15:58:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:17,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:17,046 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 15:58:17,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:58:17,048 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1186842644, now seen corresponding path program 1 times [2020-10-12 15:58:17,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:17,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043600314] [2020-10-12 15:58:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:17,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:17,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:17,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 15:58:17,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 15:58:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:17,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:17,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:17,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:17,165 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 15:58:17,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043600314] [2020-10-12 15:58:17,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:17,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:17,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897576212] [2020-10-12 15:58:17,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:17,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:17,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:17,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:17,167 INFO L87 Difference]: Start difference. First operand 5256 states and 8134 transitions. Second operand 3 states. [2020-10-12 15:58:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:17,255 INFO L93 Difference]: Finished difference Result 7884 states and 12168 transitions. [2020-10-12 15:58:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:17,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:17,270 INFO L225 Difference]: With dead ends: 7884 [2020-10-12 15:58:17,270 INFO L226 Difference]: Without dead ends: 5322 [2020-10-12 15:58:17,278 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 15:58:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2020-10-12 15:58:17,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 5320. [2020-10-12 15:58:17,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5320 states. [2020-10-12 15:58:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 8134 transitions. [2020-10-12 15:58:17,414 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 8134 transitions. Word has length 31 [2020-10-12 15:58:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:17,414 INFO L479 AbstractCegarLoop]: Abstraction has 5320 states and 8134 transitions. [2020-10-12 15:58:17,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 8134 transitions. [2020-10-12 15:58:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:17,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:17,421 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 15:58:17,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:58:17,421 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:17,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:17,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1113979946, now seen corresponding path program 1 times [2020-10-12 15:58:17,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:17,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201698586] [2020-10-12 15:58:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:17,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:17,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:58:17,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:58:17,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:17,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:17,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:17,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:17,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:17,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:17,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:17,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:17,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:17,475 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 15:58:17,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201698586] [2020-10-12 15:58:17,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:17,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:17,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255010376] [2020-10-12 15:58:17,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:17,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:17,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:17,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:17,477 INFO L87 Difference]: Start difference. First operand 5320 states and 8134 transitions. Second operand 3 states. [2020-10-12 15:58:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:17,608 INFO L93 Difference]: Finished difference Result 15564 states and 23624 transitions. [2020-10-12 15:58:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:17,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:17,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:17,631 INFO L225 Difference]: With dead ends: 15564 [2020-10-12 15:58:17,631 INFO L226 Difference]: Without dead ends: 10378 [2020-10-12 15:58:17,642 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 15:58:17,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10378 states. [2020-10-12 15:58:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10378 to 10376. [2020-10-12 15:58:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10376 states. [2020-10-12 15:58:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10376 states to 10376 states and 15494 transitions. [2020-10-12 15:58:17,975 INFO L78 Accepts]: Start accepts. Automaton has 10376 states and 15494 transitions. Word has length 31 [2020-10-12 15:58:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:17,976 INFO L479 AbstractCegarLoop]: Abstraction has 10376 states and 15494 transitions. [2020-10-12 15:58:17,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 10376 states and 15494 transitions. [2020-10-12 15:58:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:58:17,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:17,988 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 15:58:17,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:58:17,988 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:17,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:17,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1592639448, now seen corresponding path program 1 times [2020-10-12 15:58:17,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:17,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476126145] [2020-10-12 15:58:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:18,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:58:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:58:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 15:58:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:18,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:18,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:18,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:18,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:18,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:18,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:18,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:18,043 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 15:58:18,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476126145] [2020-10-12 15:58:18,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:18,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:18,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457205939] [2020-10-12 15:58:18,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:18,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:18,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:18,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:18,045 INFO L87 Difference]: Start difference. First operand 10376 states and 15494 transitions. Second operand 3 states. [2020-10-12 15:58:18,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:18,192 INFO L93 Difference]: Finished difference Result 12172 states and 18824 transitions. [2020-10-12 15:58:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:18,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-12 15:58:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:18,217 INFO L225 Difference]: With dead ends: 12172 [2020-10-12 15:58:18,217 INFO L226 Difference]: Without dead ends: 12170 [2020-10-12 15:58:18,222 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 15:58:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2020-10-12 15:58:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 10376. [2020-10-12 15:58:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10376 states. [2020-10-12 15:58:18,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10376 states to 10376 states and 15366 transitions. [2020-10-12 15:58:18,432 INFO L78 Accepts]: Start accepts. Automaton has 10376 states and 15366 transitions. Word has length 31 [2020-10-12 15:58:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:18,433 INFO L479 AbstractCegarLoop]: Abstraction has 10376 states and 15366 transitions. [2020-10-12 15:58:18,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:18,433 INFO L276 IsEmpty]: Start isEmpty. Operand 10376 states and 15366 transitions. [2020-10-12 15:58:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:58:18,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:18,444 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 15:58:18,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:58:18,445 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:18,445 INFO L82 PathProgramCache]: Analyzing trace with hash 173854429, now seen corresponding path program 1 times [2020-10-12 15:58:18,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:18,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912092728] [2020-10-12 15:58:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:18,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:18,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:58:18,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:18,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 15:58:18,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:18,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:18,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:18,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:18,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:18,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:18,504 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 15:58:18,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912092728] [2020-10-12 15:58:18,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:18,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:18,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984405586] [2020-10-12 15:58:18,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:18,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:18,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:18,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:18,507 INFO L87 Difference]: Start difference. First operand 10376 states and 15366 transitions. Second operand 3 states. [2020-10-12 15:58:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:18,753 INFO L93 Difference]: Finished difference Result 18316 states and 27784 transitions. [2020-10-12 15:58:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:18,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-12 15:58:18,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:18,787 INFO L225 Difference]: With dead ends: 18316 [2020-10-12 15:58:18,787 INFO L226 Difference]: Without dead ends: 18314 [2020-10-12 15:58:18,792 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 15:58:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18314 states. [2020-10-12 15:58:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18314 to 15240. [2020-10-12 15:58:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15240 states. [2020-10-12 15:58:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15240 states to 15240 states and 21894 transitions. [2020-10-12 15:58:19,066 INFO L78 Accepts]: Start accepts. Automaton has 15240 states and 21894 transitions. Word has length 32 [2020-10-12 15:58:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:19,066 INFO L479 AbstractCegarLoop]: Abstraction has 15240 states and 21894 transitions. [2020-10-12 15:58:19,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 15240 states and 21894 transitions. [2020-10-12 15:58:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:58:19,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:19,086 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 15:58:19,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:58:19,087 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:19,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1414493473, now seen corresponding path program 1 times [2020-10-12 15:58:19,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:19,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726096843] [2020-10-12 15:58:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:19,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:58:19,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:19,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:58:19,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:19,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:19,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:19,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:19,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:19,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:19,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:19,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:19,143 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 15:58:19,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726096843] [2020-10-12 15:58:19,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:19,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:19,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617058817] [2020-10-12 15:58:19,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:19,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:19,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:19,146 INFO L87 Difference]: Start difference. First operand 15240 states and 21894 transitions. Second operand 3 states. [2020-10-12 15:58:19,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:19,362 INFO L93 Difference]: Finished difference Result 35468 states and 51336 transitions. [2020-10-12 15:58:19,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:19,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-12 15:58:19,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:19,402 INFO L225 Difference]: With dead ends: 35468 [2020-10-12 15:58:19,402 INFO L226 Difference]: Without dead ends: 20362 [2020-10-12 15:58:19,434 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 15:58:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20362 states. [2020-10-12 15:58:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20362 to 20360. [2020-10-12 15:58:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20360 states. [2020-10-12 15:58:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20360 states to 20360 states and 29190 transitions. [2020-10-12 15:58:20,287 INFO L78 Accepts]: Start accepts. Automaton has 20360 states and 29190 transitions. Word has length 32 [2020-10-12 15:58:20,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:20,287 INFO L479 AbstractCegarLoop]: Abstraction has 20360 states and 29190 transitions. [2020-10-12 15:58:20,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:20,287 INFO L276 IsEmpty]: Start isEmpty. Operand 20360 states and 29190 transitions. [2020-10-12 15:58:20,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:20,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:20,309 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 15:58:20,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:58:20,309 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1094734815, now seen corresponding path program 1 times [2020-10-12 15:58:20,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:20,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271650618] [2020-10-12 15:58:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:20,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:20,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:20,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:20,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:20,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:58:20,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 15:58:20,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:20,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:20,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:20,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:20,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:20,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:20,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:20,387 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 15:58:20,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271650618] [2020-10-12 15:58:20,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:20,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:20,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759076135] [2020-10-12 15:58:20,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:20,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:20,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:20,390 INFO L87 Difference]: Start difference. First operand 20360 states and 29190 transitions. Second operand 3 states. [2020-10-12 15:58:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:20,576 INFO L93 Difference]: Finished difference Result 30732 states and 44040 transitions. [2020-10-12 15:58:20,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:20,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:20,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:20,616 INFO L225 Difference]: With dead ends: 30732 [2020-10-12 15:58:20,616 INFO L226 Difference]: Without dead ends: 20746 [2020-10-12 15:58:20,638 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 15:58:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20746 states. [2020-10-12 15:58:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20746 to 20744. [2020-10-12 15:58:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20744 states. [2020-10-12 15:58:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20744 states to 20744 states and 29446 transitions. [2020-10-12 15:58:21,101 INFO L78 Accepts]: Start accepts. Automaton has 20744 states and 29446 transitions. Word has length 33 [2020-10-12 15:58:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:21,102 INFO L479 AbstractCegarLoop]: Abstraction has 20744 states and 29446 transitions. [2020-10-12 15:58:21,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 20744 states and 29446 transitions. [2020-10-12 15:58:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:21,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:21,134 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 15:58:21,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:58:21,134 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:21,135 INFO L82 PathProgramCache]: Analyzing trace with hash -899409891, now seen corresponding path program 1 times [2020-10-12 15:58:21,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:21,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196237365] [2020-10-12 15:58:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:21,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:21,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:21,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:21,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:58:21,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:58:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:21,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:21,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:21,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:21,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:21,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:21,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:58:21,202 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 15:58:21,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196237365] [2020-10-12 15:58:21,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:21,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:21,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311412033] [2020-10-12 15:58:21,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:21,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:21,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:21,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:21,204 INFO L87 Difference]: Start difference. First operand 20744 states and 29446 transitions. Second operand 3 states. [2020-10-12 15:58:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:21,531 INFO L93 Difference]: Finished difference Result 35852 states and 51976 transitions. [2020-10-12 15:58:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:21,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:21,594 INFO L225 Difference]: With dead ends: 35852 [2020-10-12 15:58:21,594 INFO L226 Difference]: Without dead ends: 35850 [2020-10-12 15:58:21,606 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 15:58:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35850 states. [2020-10-12 15:58:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35850 to 30728. [2020-10-12 15:58:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30728 states. [2020-10-12 15:58:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30728 states to 30728 states and 42246 transitions. [2020-10-12 15:58:22,363 INFO L78 Accepts]: Start accepts. Automaton has 30728 states and 42246 transitions. Word has length 33 [2020-10-12 15:58:22,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:22,364 INFO L479 AbstractCegarLoop]: Abstraction has 30728 states and 42246 transitions. [2020-10-12 15:58:22,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:22,364 INFO L276 IsEmpty]: Start isEmpty. Operand 30728 states and 42246 transitions. [2020-10-12 15:58:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:58:22,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:22,400 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 15:58:22,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:58:22,400 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:22,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1807209503, now seen corresponding path program 1 times [2020-10-12 15:58:22,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:22,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393141558] [2020-10-12 15:58:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:22,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:22,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:58:22,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:22,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 15:58:22,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:58:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:22,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:22,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:22,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:22,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:22,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:22,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:22,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:22,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:22,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:22,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:22,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:22,446 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 15:58:22,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393141558] [2020-10-12 15:58:22,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:22,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:22,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518161522] [2020-10-12 15:58:22,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:22,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:22,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:22,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:22,448 INFO L87 Difference]: Start difference. First operand 30728 states and 42246 transitions. Second operand 3 states. [2020-10-12 15:58:22,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:22,814 INFO L93 Difference]: Finished difference Result 70668 states and 97544 transitions. [2020-10-12 15:58:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:22,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-12 15:58:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:22,886 INFO L225 Difference]: With dead ends: 70668 [2020-10-12 15:58:22,886 INFO L226 Difference]: Without dead ends: 40458 [2020-10-12 15:58:22,933 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 15:58:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40458 states. [2020-10-12 15:58:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40458 to 40456. [2020-10-12 15:58:24,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40456 states. [2020-10-12 15:58:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40456 states to 40456 states and 55302 transitions. [2020-10-12 15:58:24,416 INFO L78 Accepts]: Start accepts. Automaton has 40456 states and 55302 transitions. Word has length 33 [2020-10-12 15:58:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:24,416 INFO L479 AbstractCegarLoop]: Abstraction has 40456 states and 55302 transitions. [2020-10-12 15:58:24,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 40456 states and 55302 transitions. [2020-10-12 15:58:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:58:24,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:24,463 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 15:58:24,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:58:24,464 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:24,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2111687692, now seen corresponding path program 1 times [2020-10-12 15:58:24,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:24,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431908155] [2020-10-12 15:58:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:24,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:58:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:58:24,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:58:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:24,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:24,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:24,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:24,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:24,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:24,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:24,530 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 15:58:24,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431908155] [2020-10-12 15:58:24,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:24,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:24,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308111690] [2020-10-12 15:58:24,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:24,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:24,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:24,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:24,532 INFO L87 Difference]: Start difference. First operand 40456 states and 55302 transitions. Second operand 3 states. [2020-10-12 15:58:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:25,242 INFO L93 Difference]: Finished difference Result 69132 states and 96264 transitions. [2020-10-12 15:58:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:25,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-12 15:58:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:25,363 INFO L225 Difference]: With dead ends: 69132 [2020-10-12 15:58:25,363 INFO L226 Difference]: Without dead ends: 69130 [2020-10-12 15:58:25,376 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 15:58:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69130 states. [2020-10-12 15:58:26,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69130 to 60936. [2020-10-12 15:58:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60936 states. [2020-10-12 15:58:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60936 states to 60936 states and 80902 transitions. [2020-10-12 15:58:26,364 INFO L78 Accepts]: Start accepts. Automaton has 60936 states and 80902 transitions. Word has length 34 [2020-10-12 15:58:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:26,364 INFO L479 AbstractCegarLoop]: Abstraction has 60936 states and 80902 transitions. [2020-10-12 15:58:26,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 60936 states and 80902 transitions. [2020-10-12 15:58:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:58:26,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:26,460 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 15:58:26,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:58:26,460 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:26,460 INFO L82 PathProgramCache]: Analyzing trace with hash 594931702, now seen corresponding path program 1 times [2020-10-12 15:58:26,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:26,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931320957] [2020-10-12 15:58:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:26,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:26,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:58:26,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 15:58:26,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:58:26,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:26,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:26,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:26,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:26,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:26,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:26,527 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 15:58:26,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931320957] [2020-10-12 15:58:26,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:26,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:26,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870986090] [2020-10-12 15:58:26,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:26,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:26,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:26,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:26,531 INFO L87 Difference]: Start difference. First operand 60936 states and 80902 transitions. Second operand 3 states. [2020-10-12 15:58:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:27,133 INFO L93 Difference]: Finished difference Result 139788 states and 186376 transitions. [2020-10-12 15:58:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:27,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-12 15:58:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:27,226 INFO L225 Difference]: With dead ends: 139788 [2020-10-12 15:58:27,227 INFO L226 Difference]: Without dead ends: 79370 [2020-10-12 15:58:27,306 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 15:58:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79370 states. [2020-10-12 15:58:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79370 to 79368. [2020-10-12 15:58:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79368 states. [2020-10-12 15:58:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79368 states to 79368 states and 104454 transitions. [2020-10-12 15:58:30,312 INFO L78 Accepts]: Start accepts. Automaton has 79368 states and 104454 transitions. Word has length 34 [2020-10-12 15:58:30,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:30,312 INFO L479 AbstractCegarLoop]: Abstraction has 79368 states and 104454 transitions. [2020-10-12 15:58:30,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 79368 states and 104454 transitions. [2020-10-12 15:58:30,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:58:30,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:30,359 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 15:58:30,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:58:30,359 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:30,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:30,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1037593518, now seen corresponding path program 1 times [2020-10-12 15:58:30,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:30,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840535797] [2020-10-12 15:58:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:30,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:30,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:30,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:58:30,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:30,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 15:58:30,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:30,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:30,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:58:30,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:30,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:30,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:30,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:30,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:30,445 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 15:58:30,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840535797] [2020-10-12 15:58:30,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:30,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:30,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357165806] [2020-10-12 15:58:30,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:30,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:30,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:30,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:30,447 INFO L87 Difference]: Start difference. First operand 79368 states and 104454 transitions. Second operand 3 states. [2020-10-12 15:58:31,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:31,218 INFO L93 Difference]: Finished difference Result 133644 states and 178184 transitions. [2020-10-12 15:58:31,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:31,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-12 15:58:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:31,367 INFO L225 Difference]: With dead ends: 133644 [2020-10-12 15:58:31,367 INFO L226 Difference]: Without dead ends: 133642 [2020-10-12 15:58:31,411 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 15:58:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133642 states. [2020-10-12 15:58:34,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133642 to 121352. [2020-10-12 15:58:34,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121352 states. [2020-10-12 15:58:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121352 states to 121352 states and 155654 transitions. [2020-10-12 15:58:34,751 INFO L78 Accepts]: Start accepts. Automaton has 121352 states and 155654 transitions. Word has length 35 [2020-10-12 15:58:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:34,751 INFO L479 AbstractCegarLoop]: Abstraction has 121352 states and 155654 transitions. [2020-10-12 15:58:34,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 121352 states and 155654 transitions. [2020-10-12 15:58:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:58:34,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:34,828 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 15:58:34,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:58:34,829 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:34,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1669025876, now seen corresponding path program 1 times [2020-10-12 15:58:34,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:34,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898099978] [2020-10-12 15:58:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:58:34,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:34,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 15:58:34,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:58:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:34,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:34,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:34,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:34,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:34,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:34,908 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 15:58:34,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898099978] [2020-10-12 15:58:34,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:34,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:34,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439504380] [2020-10-12 15:58:34,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:34,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:34,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:34,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:34,910 INFO L87 Difference]: Start difference. First operand 121352 states and 155654 transitions. Second operand 3 states. [2020-10-12 15:58:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:36,368 INFO L93 Difference]: Finished difference Result 277004 states and 356360 transitions. [2020-10-12 15:58:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:36,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-10-12 15:58:36,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:36,497 INFO L225 Difference]: With dead ends: 277004 [2020-10-12 15:58:36,498 INFO L226 Difference]: Without dead ends: 156170 [2020-10-12 15:58:36,559 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 15:58:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156170 states. [2020-10-12 15:58:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156170 to 156168. [2020-10-12 15:58:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156168 states. [2020-10-12 15:58:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156168 states to 156168 states and 197638 transitions. [2020-10-12 15:58:40,690 INFO L78 Accepts]: Start accepts. Automaton has 156168 states and 197638 transitions. Word has length 35 [2020-10-12 15:58:40,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:40,690 INFO L479 AbstractCegarLoop]: Abstraction has 156168 states and 197638 transitions. [2020-10-12 15:58:40,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:40,690 INFO L276 IsEmpty]: Start isEmpty. Operand 156168 states and 197638 transitions. [2020-10-12 15:58:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:58:40,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:40,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:40,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:58:40,748 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:40,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2100412151, now seen corresponding path program 1 times [2020-10-12 15:58:40,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:40,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55767316] [2020-10-12 15:58:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:58:40,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:58:40,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 15:58:40,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 15:58:40,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:40,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:40,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:40,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:40,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:40,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:40,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:40,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:40,872 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 15:58:40,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55767316] [2020-10-12 15:58:40,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:40,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:40,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162273821] [2020-10-12 15:58:40,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:40,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:40,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:40,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:40,874 INFO L87 Difference]: Start difference. First operand 156168 states and 197638 transitions. Second operand 3 states. [2020-10-12 15:58:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:42,574 INFO L93 Difference]: Finished difference Result 236556 states and 300040 transitions. [2020-10-12 15:58:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:42,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-12 15:58:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:42,696 INFO L225 Difference]: With dead ends: 236556 [2020-10-12 15:58:42,697 INFO L226 Difference]: Without dead ends: 159754 [2020-10-12 15:58:42,748 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 15:58:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159754 states. [2020-10-12 15:58:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159754 to 159752. [2020-10-12 15:58:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159752 states. [2020-10-12 15:58:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159752 states to 159752 states and 200710 transitions. [2020-10-12 15:58:47,246 INFO L78 Accepts]: Start accepts. Automaton has 159752 states and 200710 transitions. Word has length 36 [2020-10-12 15:58:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:47,247 INFO L479 AbstractCegarLoop]: Abstraction has 159752 states and 200710 transitions. [2020-10-12 15:58:47,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 159752 states and 200710 transitions. [2020-10-12 15:58:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:58:47,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:47,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:47,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:58:47,303 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:47,303 INFO L82 PathProgramCache]: Analyzing trace with hash 200410439, now seen corresponding path program 1 times [2020-10-12 15:58:47,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:47,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161043032] [2020-10-12 15:58:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:47,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:47,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:47,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:58:47,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:58:47,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 15:58:47,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:58:47,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:47,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:47,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:47,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:47,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:47,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:47,387 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 15:58:47,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161043032] [2020-10-12 15:58:47,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:47,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:47,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121511442] [2020-10-12 15:58:47,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:47,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:47,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:47,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:47,389 INFO L87 Difference]: Start difference. First operand 159752 states and 200710 transitions. Second operand 3 states. [2020-10-12 15:58:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:48,367 INFO L93 Difference]: Finished difference Result 236556 states and 293896 transitions. [2020-10-12 15:58:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:48,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-12 15:58:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:49,192 INFO L225 Difference]: With dead ends: 236556 [2020-10-12 15:58:49,192 INFO L226 Difference]: Without dead ends: 159754 [2020-10-12 15:58:49,241 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 15:58:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159754 states. [2020-10-12 15:58:54,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159754 to 159752. [2020-10-12 15:58:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159752 states. [2020-10-12 15:58:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159752 states to 159752 states and 196614 transitions. [2020-10-12 15:58:54,381 INFO L78 Accepts]: Start accepts. Automaton has 159752 states and 196614 transitions. Word has length 36 [2020-10-12 15:58:54,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:54,381 INFO L479 AbstractCegarLoop]: Abstraction has 159752 states and 196614 transitions. [2020-10-12 15:58:54,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 159752 states and 196614 transitions. [2020-10-12 15:58:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:58:54,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:54,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:54,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:58:54,453 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:54,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:54,453 INFO L82 PathProgramCache]: Analyzing trace with hash -617238011, now seen corresponding path program 1 times [2020-10-12 15:58:54,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:54,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270853239] [2020-10-12 15:58:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:54,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:58:54,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:58:54,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:58:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:58:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:54,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:54,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:54,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:58:54,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:54,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:54,513 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 15:58:54,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270853239] [2020-10-12 15:58:54,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:54,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:54,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048674163] [2020-10-12 15:58:54,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:54,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:54,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:54,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:54,515 INFO L87 Difference]: Start difference. First operand 159752 states and 196614 transitions. Second operand 3 states. [2020-10-12 15:58:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:58:55,913 INFO L93 Difference]: Finished difference Result 262156 states and 323592 transitions. [2020-10-12 15:58:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:58:55,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-12 15:58:55,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:58:56,728 INFO L225 Difference]: With dead ends: 262156 [2020-10-12 15:58:56,728 INFO L226 Difference]: Without dead ends: 262154 [2020-10-12 15:58:56,762 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 15:58:56,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262154 states. [2020-10-12 15:58:59,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262154 to 245768. [2020-10-12 15:58:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245768 states. [2020-10-12 15:58:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245768 states to 245768 states and 294918 transitions. [2020-10-12 15:58:59,795 INFO L78 Accepts]: Start accepts. Automaton has 245768 states and 294918 transitions. Word has length 36 [2020-10-12 15:58:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:58:59,796 INFO L479 AbstractCegarLoop]: Abstraction has 245768 states and 294918 transitions. [2020-10-12 15:58:59,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:58:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 245768 states and 294918 transitions. [2020-10-12 15:58:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:58:59,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:58:59,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:58:59,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:58:59,923 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:58:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:58:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2089381383, now seen corresponding path program 1 times [2020-10-12 15:58:59,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:58:59,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465272857] [2020-10-12 15:58:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:58:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:59,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:59,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:59,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:59,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:58:59,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:58:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:58:59,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:58:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:58:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:58:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:59,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:58:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:58:59,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:58:59,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:58:59,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:58:59,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:58:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:58:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:58:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:58:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:58:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:58:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:58:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:58:59,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465272857] [2020-10-12 15:58:59,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:58:59,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:58:59,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117123730] [2020-10-12 15:58:59,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:58:59,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:58:59,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:58:59,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:58:59,987 INFO L87 Difference]: Start difference. First operand 245768 states and 294918 transitions. Second operand 3 states. [2020-10-12 15:59:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:59:05,847 INFO L93 Difference]: Finished difference Result 552972 states and 659464 transitions. [2020-10-12 15:59:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:59:05,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-10-12 15:59:05,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:59:06,151 INFO L225 Difference]: With dead ends: 552972 [2020-10-12 15:59:06,151 INFO L226 Difference]: Without dead ends: 311306 [2020-10-12 15:59:06,293 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 15:59:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311306 states. [2020-10-12 15:59:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311306 to 311304. [2020-10-12 15:59:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311304 states. [2020-10-12 15:59:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311304 states to 311304 states and 364550 transitions. [2020-10-12 15:59:10,707 INFO L78 Accepts]: Start accepts. Automaton has 311304 states and 364550 transitions. Word has length 36 [2020-10-12 15:59:10,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:59:10,707 INFO L479 AbstractCegarLoop]: Abstraction has 311304 states and 364550 transitions. [2020-10-12 15:59:10,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:59:10,707 INFO L276 IsEmpty]: Start isEmpty. Operand 311304 states and 364550 transitions. [2020-10-12 15:59:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:59:10,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:59:10,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:59:10,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 15:59:10,850 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:59:10,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:59:10,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1954292981, now seen corresponding path program 1 times [2020-10-12 15:59:10,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:59:10,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637279365] [2020-10-12 15:59:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:59:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:10,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:10,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:59:10,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:59:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 15:59:10,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:59:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:59:10,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:59:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:59:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:10,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:59:10,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:59:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:59:10,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:59:10,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:59:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:59:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:10,924 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 15:59:10,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637279365] [2020-10-12 15:59:10,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:59:10,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:59:10,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101843475] [2020-10-12 15:59:10,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:59:10,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:59:10,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:59:10,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:10,926 INFO L87 Difference]: Start difference. First operand 311304 states and 364550 transitions. Second operand 3 states. [2020-10-12 15:59:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:59:18,225 INFO L93 Difference]: Finished difference Result 503818 states and 585735 transitions. [2020-10-12 15:59:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:59:18,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-12 15:59:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:59:18,701 INFO L225 Difference]: With dead ends: 503818 [2020-10-12 15:59:18,701 INFO L226 Difference]: Without dead ends: 503816 [2020-10-12 15:59:18,744 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 15:59:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503816 states. [2020-10-12 15:59:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503816 to 487432. [2020-10-12 15:59:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487432 states. [2020-10-12 15:59:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487432 states to 487432 states and 561158 transitions. [2020-10-12 15:59:26,012 INFO L78 Accepts]: Start accepts. Automaton has 487432 states and 561158 transitions. Word has length 37 [2020-10-12 15:59:26,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:59:26,012 INFO L479 AbstractCegarLoop]: Abstraction has 487432 states and 561158 transitions. [2020-10-12 15:59:26,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:59:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 487432 states and 561158 transitions. [2020-10-12 15:59:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:59:26,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:59:26,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:59:26,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 15:59:26,314 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:59:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:59:26,315 INFO L82 PathProgramCache]: Analyzing trace with hash 752326413, now seen corresponding path program 1 times [2020-10-12 15:59:26,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:59:26,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526423238] [2020-10-12 15:59:26,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:59:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:26,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:26,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:59:26,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:59:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 15:59:26,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:59:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:59:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:59:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:59:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:59:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:59:26,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:59:26,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 15:59:26,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:59:26,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:59:26,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:59:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:59:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:59:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:59:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:59:26,377 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 15:59:26,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526423238] [2020-10-12 15:59:26,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:59:26,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 15:59:26,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423049637] [2020-10-12 15:59:26,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-12 15:59:26,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:59:26,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-12 15:59:26,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-12 15:59:26,380 INFO L87 Difference]: Start difference. First operand 487432 states and 561158 transitions. Second operand 3 states. [2020-10-12 15:59:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:59:36,415 INFO L93 Difference]: Finished difference Result 1093640 states and 1249286 transitions. [2020-10-12 15:59:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:59:36,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-12 15:59:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:59:36,416 INFO L225 Difference]: With dead ends: 1093640 [2020-10-12 15:59:36,416 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 15:59:36,833 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 15:59:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 15:59:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 15:59:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 15:59:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 15:59:36,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-12 15:59:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:59:36,834 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 15:59:36,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-12 15:59:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 15:59:36,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 15:59:36,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 15:59:36,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 15:59:36,910 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 15:59:36,910 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:59:36,910 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:59:36,910 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 15:59:36,910 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 15:59:36,910 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 15:59:36,910 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 219) no Hoare annotation was computed. [2020-10-12 15:59:36,910 INFO L268 CegarLoopResult]: For program point L184-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point L118-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point L102-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point L185(line 185) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point L53(lines 53 55) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point L86-2(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point L169-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 219) no Hoare annotation was computed. [2020-10-12 15:59:36,911 INFO L268 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-10-12 15:59:36,912 INFO L268 CegarLoopResult]: For program point L154-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,912 INFO L268 CegarLoopResult]: For program point L204-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,912 INFO L268 CegarLoopResult]: For program point L138-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,912 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-10-12 15:59:36,912 INFO L268 CegarLoopResult]: For program point L122-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,912 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-10-12 15:59:36,912 INFO L268 CegarLoopResult]: For program point L106-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,912 INFO L268 CegarLoopResult]: For program point L189-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,913 INFO L268 CegarLoopResult]: For program point L90-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,913 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-10-12 15:59:36,913 INFO L268 CegarLoopResult]: For program point L174-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,913 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-10-12 15:59:36,913 INFO L268 CegarLoopResult]: For program point L159-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,913 INFO L268 CegarLoopResult]: For program point L126-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,913 INFO L271 CegarLoopResult]: At program point L209-1(lines 51 214) the Hoare annotation is: true [2020-10-12 15:59:36,913 INFO L268 CegarLoopResult]: For program point L110-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,914 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-10-12 15:59:36,914 INFO L268 CegarLoopResult]: For program point L94-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,914 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-10-12 15:59:36,914 INFO L264 CegarLoopResult]: At program point L210-1(lines 5 219) the Hoare annotation is: false [2020-10-12 15:59:36,914 INFO L268 CegarLoopResult]: For program point L144-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,914 INFO L268 CegarLoopResult]: For program point L194-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,914 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-10-12 15:59:36,914 INFO L268 CegarLoopResult]: For program point L195(line 195) no Hoare annotation was computed. [2020-10-12 15:59:36,915 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-10-12 15:59:36,915 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 219) the Hoare annotation is: true [2020-10-12 15:59:36,915 INFO L268 CegarLoopResult]: For program point L179-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,915 INFO L268 CegarLoopResult]: For program point L130-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,915 INFO L268 CegarLoopResult]: For program point L180(line 180) no Hoare annotation was computed. [2020-10-12 15:59:36,915 INFO L268 CegarLoopResult]: For program point L114-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,915 INFO L268 CegarLoopResult]: For program point L164-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,915 INFO L268 CegarLoopResult]: For program point L98-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,915 INFO L268 CegarLoopResult]: For program point L165(line 165) no Hoare annotation was computed. [2020-10-12 15:59:36,916 INFO L271 CegarLoopResult]: At program point L215(lines 5 219) the Hoare annotation is: true [2020-10-12 15:59:36,916 INFO L268 CegarLoopResult]: For program point L149-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,916 INFO L268 CegarLoopResult]: For program point L199-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,916 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-10-12 15:59:36,916 INFO L268 CegarLoopResult]: For program point L200(line 200) no Hoare annotation was computed. [2020-10-12 15:59:36,916 INFO L268 CegarLoopResult]: For program point L134-1(lines 51 214) no Hoare annotation was computed. [2020-10-12 15:59:36,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:59:36 BoogieIcfgContainer [2020-10-12 15:59:36,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:59:36,932 INFO L168 Benchmark]: Toolchain (without parser) took 86597.48 ms. Allocated memory was 141.6 MB in the beginning and 3.3 GB in the end (delta: 3.2 GB). Free memory was 104.6 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-10-12 15:59:36,933 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 15:59:36,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.14 ms. Allocated memory is still 141.6 MB. Free memory was 104.3 MB in the beginning and 92.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:59:36,934 INFO L168 Benchmark]: Boogie Preprocessor took 117.58 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 92.8 MB in the beginning and 181.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:59:36,934 INFO L168 Benchmark]: RCFGBuilder took 480.14 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 158.2 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:59:36,934 INFO L168 Benchmark]: TraceAbstraction took 85633.92 ms. Allocated memory was 203.9 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 157.6 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2020-10-12 15:59:36,936 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 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.14 ms. Allocated memory is still 141.6 MB. Free memory was 104.3 MB in the beginning and 92.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.58 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 92.8 MB in the beginning and 181.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.14 ms. Allocated memory is still 203.9 MB. Free memory was 181.5 MB in the beginning and 158.2 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 85633.92 ms. Allocated memory was 203.9 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 157.6 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 217]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 85.4s, OverallIterations: 38, TraceHistogramMax: 1, AutomataDifference: 38.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4390 SDtfs, 2184 SDslu, 3037 SDs, 0 SdLazy, 203 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487432occurred in iteration=37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 41.4s AutomataMinimizationTime, 38 MinimizatonAttempts, 65576 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 16394 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 1162 NumberOfCodeBlocks, 1162 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1124 ConstructedInterpolants, 0 QuantifiedInterpolants, 70276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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...