/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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:27:21,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:27:21,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:27:21,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:27:21,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:27:21,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:27:21,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:27:21,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:27:21,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:27:21,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:27:21,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:27:21,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:27:21,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:27:21,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:27:21,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:27:21,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:27:21,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:27:21,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:27:21,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:27:21,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:27:21,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:27:21,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:27:21,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:27:21,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:27:21,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:27:21,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:27:21,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:27:21,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:27:21,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:27:21,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:27:21,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:27:21,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:27:21,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:27:21,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:27:21,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:27:21,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:27:21,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:27:21,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:27:21,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:27:21,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:27:21,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:27:21,614 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 [2020-09-25 03:27:21,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:27:21,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:27:21,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:27:21,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:27:21,668 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:27:21,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:27:21,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:27:21,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:27:21,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:27:21,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:27:21,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:27:21,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:27:21,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:27:21,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:27:21,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:27:21,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:27:21,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:27:21,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:27:21,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:27:21,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:27:21,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:27:21,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:27:21,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:27:21,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:27:21,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:27:21,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:27:21,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:27:21,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:27:21,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:27:21,673 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:27:22,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:27:22,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:27:22,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:27:22,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:27:22,192 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:27:22,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-25 03:27:22,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca9ed6e65/0c1812c468144317bcb061af51a4d61f/FLAG3a7843409 [2020-09-25 03:27:22,882 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:27:22,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-09-25 03:27:22,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca9ed6e65/0c1812c468144317bcb061af51a4d61f/FLAG3a7843409 [2020-09-25 03:27:23,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca9ed6e65/0c1812c468144317bcb061af51a4d61f [2020-09-25 03:27:23,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:27:23,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:27:23,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:27:23,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:27:23,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:27:23,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e07dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23, skipping insertion in model container [2020-09-25 03:27:23,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:27:23,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:27:23,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:27:23,578 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:27:23,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:27:23,622 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:27:23,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23 WrapperNode [2020-09-25 03:27:23,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:27:23,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:27:23,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:27:23,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:27:23,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (1/1) ... [2020-09-25 03:27:23,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:27:23,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:27:23,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:27:23,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:27:23,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (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 [2020-09-25 03:27:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:27:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:27:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:27:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:27:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:27:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:27:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:27:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:27:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:27:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:27:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:27:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:27:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:27:24,094 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:27:24,094 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 03:27:24,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:24 BoogieIcfgContainer [2020-09-25 03:27:24,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:27:24,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:27:24,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:27:24,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:27:24,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:27:23" (1/3) ... [2020-09-25 03:27:24,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2896af78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:24, skipping insertion in model container [2020-09-25 03:27:24,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:27:23" (2/3) ... [2020-09-25 03:27:24,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2896af78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:27:24, skipping insertion in model container [2020-09-25 03:27:24,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:27:24" (3/3) ... [2020-09-25 03:27:24,111 INFO L109 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-09-25 03:27:24,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:27:24,135 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:27:24,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:27:24,207 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:27:24,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:27:24,208 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:27:24,208 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:27:24,209 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:27:24,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:27:24,209 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:27:24,209 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:27:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-25 03:27:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 03:27:24,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:24,252 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] [2020-09-25 03:27:24,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:24,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:24,261 INFO L82 PathProgramCache]: Analyzing trace with hash -815601615, now seen corresponding path program 1 times [2020-09-25 03:27:24,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:24,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772182733] [2020-09-25 03:27:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:24,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:24,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:27:24,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:27:24,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 03:27:24,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:27:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:24,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:27:24,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:27:24,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:24,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:24,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:24,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:24,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:27:24,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:24,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:24,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:24,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772182733] [2020-09-25 03:27:24,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:24,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:27:24,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040045972] [2020-09-25 03:27:24,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:27:24,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:24,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:27:24,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:27:24,745 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 5 states. [2020-09-25 03:27:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:24,854 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2020-09-25 03:27:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:27:24,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 03:27:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:24,868 INFO L225 Difference]: With dead ends: 83 [2020-09-25 03:27:24,868 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 03:27:24,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:27:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 03:27:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-09-25 03:27:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:27:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-25 03:27:24,942 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 24 [2020-09-25 03:27:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:24,943 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-25 03:27:24,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:27:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-25 03:27:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:27:24,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:24,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:24,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:27:24,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:24,950 INFO L82 PathProgramCache]: Analyzing trace with hash -594427423, now seen corresponding path program 1 times [2020-09-25 03:27:24,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:24,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210029554] [2020-09-25 03:27:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:25,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:25,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:25,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:27:25,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:25,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-25 03:27:25,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:25,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:27:25,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:27:25,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:27:25,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:25,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:25,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:25,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:25,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:27:25,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:25,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 03:27:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:25,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:25,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:25,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 03:27:25,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:25,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:25,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210029554] [2020-09-25 03:27:25,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:27:25,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:27:25,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131524306] [2020-09-25 03:27:25,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:27:25,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:25,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:27:25,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:27:25,511 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2020-09-25 03:27:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:25,645 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-09-25 03:27:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:27:25,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 03:27:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:25,651 INFO L225 Difference]: With dead ends: 82 [2020-09-25 03:27:25,651 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 03:27:25,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 03:27:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-09-25 03:27:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:27:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-09-25 03:27:25,670 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 38 [2020-09-25 03:27:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:25,671 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-09-25 03:27:25,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:27:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-09-25 03:27:25,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 03:27:25,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:25,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:25,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:27:25,674 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:25,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:25,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1151378409, now seen corresponding path program 1 times [2020-09-25 03:27:25,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:25,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709606638] [2020-09-25 03:27:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:26,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:27:26,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-09-25 03:27:26,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:27:26,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 03:27:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:26,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:26,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:26,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:26,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:27:26,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:26,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:26,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 03:27:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:26,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:26,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:26,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:27:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:27:26,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709606638] [2020-09-25 03:27:26,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:26,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:27:26,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338660994] [2020-09-25 03:27:26,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:27:26,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:26,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:27:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:27:26,423 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2020-09-25 03:27:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:26,489 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-09-25 03:27:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:27:26,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-09-25 03:27:26,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:26,492 INFO L225 Difference]: With dead ends: 67 [2020-09-25 03:27:26,494 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 03:27:26,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 03:27:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-09-25 03:27:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 03:27:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 03:27:26,514 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 44 [2020-09-25 03:27:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:26,515 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 03:27:26,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:27:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 03:27:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 03:27:26,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:26,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:26,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:27:26,523 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1388174135, now seen corresponding path program 2 times [2020-09-25 03:27:26,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:26,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770476235] [2020-09-25 03:27:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:26,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 03:27:26,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:26,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-25 03:27:26,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:27:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:27:26,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 03:27:26,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:26,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:26,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:26,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:26,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:26,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:27:26,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:26,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 03:27:27,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 03:27:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:27,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:27,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:27,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:27,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:27:27,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:27,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:27,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 03:27:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:27,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:27,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:27,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:27,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:27,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:27:27,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:27,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:27:27,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770476235] [2020-09-25 03:27:27,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:27,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:27:27,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830986798] [2020-09-25 03:27:27,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:27:27,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:27,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:27:27,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:27:27,076 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 8 states. [2020-09-25 03:27:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:27,286 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-09-25 03:27:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:27:27,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-25 03:27:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:27,289 INFO L225 Difference]: With dead ends: 112 [2020-09-25 03:27:27,290 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 03:27:27,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:27:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 03:27:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2020-09-25 03:27:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 03:27:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-09-25 03:27:27,303 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 54 [2020-09-25 03:27:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:27,303 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-09-25 03:27:27,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:27:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-09-25 03:27:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 03:27:27,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:27,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:27,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:27:27,306 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:27,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1511501119, now seen corresponding path program 3 times [2020-09-25 03:27:27,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:27,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037314209] [2020-09-25 03:27:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:28,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 03:27:28,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:28,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-09-25 03:27:28,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:27:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:28,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 03:27:28,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:28,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:28,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:28,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:28,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:28,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 03:27:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:28,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:28,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:28,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:28,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:28,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:28,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:28,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:28,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 03:27:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:28,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:28,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:28,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:27:28,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037314209] [2020-09-25 03:27:28,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:28,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:27:28,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287286305] [2020-09-25 03:27:28,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:27:28,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:27:28,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:27:28,386 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 7 states. [2020-09-25 03:27:28,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:28,447 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2020-09-25 03:27:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:27:28,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 03:27:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:28,449 INFO L225 Difference]: With dead ends: 83 [2020-09-25 03:27:28,449 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 03:27:28,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:27:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 03:27:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-09-25 03:27:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 03:27:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-09-25 03:27:28,460 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 60 [2020-09-25 03:27:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:28,460 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-09-25 03:27:28,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:27:28,461 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-09-25 03:27:28,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 03:27:28,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:28,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:28,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:27:28,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1318170893, now seen corresponding path program 4 times [2020-09-25 03:27:28,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:28,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310300812] [2020-09-25 03:27:28,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:28,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:29,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:29,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:27:29,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:29,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-09-25 03:27:29,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:29,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:27:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:27:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:27:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:29,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:27:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:29,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 03:27:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:29,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:29,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:29,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:29,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:27:29,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:29,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 03:27:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:29,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:29,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:29,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:29,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:29,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:27:29,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:29,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:29,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:29,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 03:27:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:29,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:27:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:27:29,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310300812] [2020-09-25 03:27:29,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:29,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:27:29,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492074653] [2020-09-25 03:27:29,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:27:29,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:29,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:27:29,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:29,180 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 10 states. [2020-09-25 03:27:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:29,435 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2020-09-25 03:27:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:27:29,436 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-25 03:27:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:29,439 INFO L225 Difference]: With dead ends: 142 [2020-09-25 03:27:29,439 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 03:27:29,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:27:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 03:27:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 82. [2020-09-25 03:27:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 03:27:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-09-25 03:27:29,451 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 70 [2020-09-25 03:27:29,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:29,452 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-09-25 03:27:29,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:27:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-09-25 03:27:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 03:27:29,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:29,453 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:29,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:27:29,454 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:29,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:29,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1633055509, now seen corresponding path program 5 times [2020-09-25 03:27:29,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:29,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003788060] [2020-09-25 03:27:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:31,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 03:27:31,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1774 [2020-09-25 03:27:31,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:27:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:31,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:27:31,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:31,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:31,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:31,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:31,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:31,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:31,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:31,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 03:27:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:31,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:31,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:31,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:31,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:31,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 03:27:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:31,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:31,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:31,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:27:31,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:31,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:31,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 03:27:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:31,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:31,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:31,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:31,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:27:31,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003788060] [2020-09-25 03:27:31,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:31,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:27:31,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945748437] [2020-09-25 03:27:31,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:27:31,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:31,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:27:31,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:27:31,396 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 8 states. [2020-09-25 03:27:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:31,469 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2020-09-25 03:27:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:27:31,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-09-25 03:27:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:31,472 INFO L225 Difference]: With dead ends: 99 [2020-09-25 03:27:31,472 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 03:27:31,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:27:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 03:27:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2020-09-25 03:27:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 03:27:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-25 03:27:31,482 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 76 [2020-09-25 03:27:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:31,483 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-25 03:27:31,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:27:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-25 03:27:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 03:27:31,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:31,485 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:31,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:27:31,485 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:31,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1426826083, now seen corresponding path program 6 times [2020-09-25 03:27:31,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:31,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619987230] [2020-09-25 03:27:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:31,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:31,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 03:27:31,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:31,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-25 03:27:31,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:27:31,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:27:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:27:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:32,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:32,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:32,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:32,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:32,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:32,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:32,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:32,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:32,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:32,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 03:27:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:32,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:32,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:32,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:32,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:32,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:32,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:32,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:32,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:32,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 03:27:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:32,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:32,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:32,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:32,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:32,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 03:27:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:32,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:32,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:32,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:32,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:32,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:32,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:32,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 03:27:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:32,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:32,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:32,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:32,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:32,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:32,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:32,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:32,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 03:27:32,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619987230] [2020-09-25 03:27:32,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:32,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:27:32,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469887045] [2020-09-25 03:27:32,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:27:32,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:32,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:27:32,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:27:32,140 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 12 states. [2020-09-25 03:27:32,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:32,451 INFO L93 Difference]: Finished difference Result 172 states and 187 transitions. [2020-09-25 03:27:32,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:27:32,452 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-09-25 03:27:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:32,454 INFO L225 Difference]: With dead ends: 172 [2020-09-25 03:27:32,454 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 03:27:32,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:27:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 03:27:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 98. [2020-09-25 03:27:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 03:27:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 03:27:32,463 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 86 [2020-09-25 03:27:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:32,464 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 03:27:32,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:27:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 03:27:32,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 03:27:32,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:32,466 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:32,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:27:32,466 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1621404309, now seen corresponding path program 7 times [2020-09-25 03:27:32,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:32,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824351710] [2020-09-25 03:27:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:35,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 03:27:35,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2857 [2020-09-25 03:27:35,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:27:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 03:27:35,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:35,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:35,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:35,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:35,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:35,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 03:27:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:35,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:35,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:35,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:35,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 03:27:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:35,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:35,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:35,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:35,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:35,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 03:27:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:35,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:35,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:27:35,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:35,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:35,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:35,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 03:27:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:35,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:35,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:35,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:35,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:35,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:35,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:35,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:35,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 52 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 03:27:35,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824351710] [2020-09-25 03:27:35,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:35,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:27:35,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082852632] [2020-09-25 03:27:35,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:27:35,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:35,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:27:35,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:27:35,519 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 9 states. [2020-09-25 03:27:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:35,595 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2020-09-25 03:27:35,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:27:35,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-09-25 03:27:35,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:35,599 INFO L225 Difference]: With dead ends: 115 [2020-09-25 03:27:35,599 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 03:27:35,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 03:27:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2020-09-25 03:27:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 03:27:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2020-09-25 03:27:35,615 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 92 [2020-09-25 03:27:35,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:35,616 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2020-09-25 03:27:35,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:27:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2020-09-25 03:27:35,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 03:27:35,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:35,620 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:35,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:27:35,621 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:35,621 INFO L82 PathProgramCache]: Analyzing trace with hash -927854023, now seen corresponding path program 8 times [2020-09-25 03:27:35,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:35,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059731062] [2020-09-25 03:27:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:35,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:36,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:36,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 03:27:36,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-25 03:27:36,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:27:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:27:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 03:27:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:36,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:36,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:36,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:36,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:27:36,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:36,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 03:27:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:36,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:36,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:36,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:36,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:36,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:27:36,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:36,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:36,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:36,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:36,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 03:27:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:36,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:36,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:36,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:36,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:36,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 03:27:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:36,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:36,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:36,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:36,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:36,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:36,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:36,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:36,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:36,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 03:27:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:36,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:36,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:36,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:36,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:36,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:36,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:36,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:36,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 03:27:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:36,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:36,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:36,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:36,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 80 proven. 44 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 03:27:37,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059731062] [2020-09-25 03:27:37,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:37,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 03:27:37,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578429958] [2020-09-25 03:27:37,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:27:37,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:37,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:27:37,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:27:37,027 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand 14 states. [2020-09-25 03:27:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:37,474 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions. [2020-09-25 03:27:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:27:37,475 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-09-25 03:27:37,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:37,477 INFO L225 Difference]: With dead ends: 202 [2020-09-25 03:27:37,477 INFO L226 Difference]: Without dead ends: 157 [2020-09-25 03:27:37,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-25 03:27:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-25 03:27:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 114. [2020-09-25 03:27:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 03:27:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-09-25 03:27:37,492 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 102 [2020-09-25 03:27:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:37,493 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-09-25 03:27:37,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:27:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-09-25 03:27:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 03:27:37,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:37,496 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:37,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:27:37,496 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:37,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:37,496 INFO L82 PathProgramCache]: Analyzing trace with hash 917288001, now seen corresponding path program 9 times [2020-09-25 03:27:37,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:37,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067959058] [2020-09-25 03:27:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:37,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:41,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 03:27:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4114 [2020-09-25 03:27:41,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:27:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 03:27:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:41,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:41,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:41,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:41,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:41,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:41,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 03:27:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:41,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:41,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:41,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:41,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:41,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 03:27:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:41,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:41,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:41,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:41,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 03:27:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:41,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:41,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:41,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:27:41,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 03:27:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:41,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:41,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:41,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:41,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:41,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:41,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:41,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 03:27:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:41,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:41,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:41,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:41,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 03:27:41,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067959058] [2020-09-25 03:27:41,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:41,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:27:41,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000404357] [2020-09-25 03:27:41,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:27:41,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:41,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:27:41,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:27:41,817 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 10 states. [2020-09-25 03:27:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:41,903 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2020-09-25 03:27:41,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:27:41,903 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-09-25 03:27:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:41,905 INFO L225 Difference]: With dead ends: 131 [2020-09-25 03:27:41,905 INFO L226 Difference]: Without dead ends: 129 [2020-09-25 03:27:41,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:27:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-25 03:27:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2020-09-25 03:27:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-25 03:27:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2020-09-25 03:27:41,912 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 108 [2020-09-25 03:27:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:41,913 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2020-09-25 03:27:41,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:27:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2020-09-25 03:27:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 03:27:41,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:41,917 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:41,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:27:41,918 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1617732209, now seen corresponding path program 10 times [2020-09-25 03:27:41,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:41,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591458322] [2020-09-25 03:27:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:42,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:42,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:42,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 03:27:42,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-09-25 03:27:42,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:27:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:27:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 03:27:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:42,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:42,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:42,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:42,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:42,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:42,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:27:42,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:42,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 03:27:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:42,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:42,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:42,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:42,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:42,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:42,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:42,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:42,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-25 03:27:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:42,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:42,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:42,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:42,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 03:27:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:42,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:42,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:42,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:42,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:43,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 03:27:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:43,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:43,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:43,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:43,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:43,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:27:43,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:43,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:43,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 03:27:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:43,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:43,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:43,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:43,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:43,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 03:27:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:43,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:43,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:43,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:43,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:43,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:43,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:43,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:27:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 114 proven. 70 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 03:27:43,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591458322] [2020-09-25 03:27:43,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:43,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:27:43,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035387536] [2020-09-25 03:27:43,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:27:43,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:43,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:27:43,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:27:43,094 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 16 states. [2020-09-25 03:27:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:43,721 INFO L93 Difference]: Finished difference Result 232 states and 253 transitions. [2020-09-25 03:27:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:27:43,721 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 118 [2020-09-25 03:27:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:43,724 INFO L225 Difference]: With dead ends: 232 [2020-09-25 03:27:43,724 INFO L226 Difference]: Without dead ends: 181 [2020-09-25 03:27:43,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-25 03:27:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-09-25 03:27:43,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 130. [2020-09-25 03:27:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-25 03:27:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2020-09-25 03:27:43,740 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 118 [2020-09-25 03:27:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:43,741 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2020-09-25 03:27:43,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:27:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2020-09-25 03:27:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 03:27:43,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:43,744 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:43,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 03:27:43,745 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:43,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:43,745 INFO L82 PathProgramCache]: Analyzing trace with hash -581374057, now seen corresponding path program 11 times [2020-09-25 03:27:43,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:43,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881660112] [2020-09-25 03:27:43,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:48,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:48,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 03:27:48,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 03:27:48,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:27:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:48,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 03:27:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:48,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:48,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:48,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:48,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:48,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:48,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 03:27:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:48,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:48,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:48,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:48,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:27:48,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:48,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:48,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:48,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 03:27:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:48,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:48,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:48,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:48,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 03:27:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:48,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:48,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:27:48,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 03:27:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:48,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:48,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:48,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:48,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 03:27:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:48,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:48,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:48,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 03:27:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:48,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:49,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:49,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:49,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 114 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 03:27:49,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881660112] [2020-09-25 03:27:49,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:49,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:27:49,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468973747] [2020-09-25 03:27:49,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:27:49,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:49,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:27:49,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:27:49,024 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand 11 states. [2020-09-25 03:27:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:49,120 INFO L93 Difference]: Finished difference Result 147 states and 150 transitions. [2020-09-25 03:27:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:27:49,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-09-25 03:27:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:49,122 INFO L225 Difference]: With dead ends: 147 [2020-09-25 03:27:49,122 INFO L226 Difference]: Without dead ends: 145 [2020-09-25 03:27:49,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:27:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-25 03:27:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 140. [2020-09-25 03:27:49,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 03:27:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2020-09-25 03:27:49,135 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 124 [2020-09-25 03:27:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:49,135 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2020-09-25 03:27:49,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:27:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2020-09-25 03:27:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 03:27:49,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:49,136 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:49,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 03:27:49,137 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:49,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:49,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1723472539, now seen corresponding path program 12 times [2020-09-25 03:27:49,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:49,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482183781] [2020-09-25 03:27:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 03:27:51,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:51,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1854 [2020-09-25 03:27:51,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:27:51,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:27:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 03:27:51,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:51,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:51,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 03:27:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:51,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:51,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 03:27:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:51,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:27:51,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 03:27:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:51,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:51,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:51,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 03:27:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:51,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:27:51,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 03:27:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:51,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:51,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:51,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 03:27:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:51,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:51,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:51,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 03:27:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:51,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:51,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:51,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:51,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:27:51,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:51,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:51,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 154 proven. 102 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 03:27:51,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482183781] [2020-09-25 03:27:51,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:51,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 03:27:51,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721921324] [2020-09-25 03:27:51,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 03:27:51,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:51,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 03:27:51,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:27:51,378 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 18 states. [2020-09-25 03:27:52,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:52,065 INFO L93 Difference]: Finished difference Result 262 states and 286 transitions. [2020-09-25 03:27:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 03:27:52,066 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 134 [2020-09-25 03:27:52,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:52,069 INFO L225 Difference]: With dead ends: 262 [2020-09-25 03:27:52,069 INFO L226 Difference]: Without dead ends: 205 [2020-09-25 03:27:52,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:27:52,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-25 03:27:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 146. [2020-09-25 03:27:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 03:27:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2020-09-25 03:27:52,088 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 134 [2020-09-25 03:27:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:52,089 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2020-09-25 03:27:52,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 03:27:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2020-09-25 03:27:52,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 03:27:52,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:52,092 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:52,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 03:27:52,093 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:52,093 INFO L82 PathProgramCache]: Analyzing trace with hash 318138221, now seen corresponding path program 13 times [2020-09-25 03:27:52,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:52,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074332116] [2020-09-25 03:27:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 03:27:57,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:57,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:27:57,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:27:57,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:27:57,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 03:27:57,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:57,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:27:57,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:27:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:27:57,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 03:27:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:57,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:57,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 03:27:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:27:57,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:27:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:57,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:57,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:57,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:57,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 03:27:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:57,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:27:57,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:57,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 03:27:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:57,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:27:57,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 03:27:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:57,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:27:57,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 03:27:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:57,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:27:57,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:27:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:27:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:27:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:27:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 154 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-09-25 03:27:57,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074332116] [2020-09-25 03:27:57,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:27:57,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:27:57,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203504475] [2020-09-25 03:27:57,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:27:57,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:27:57,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:27:57,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:27:57,388 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand 12 states. [2020-09-25 03:27:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:27:57,491 INFO L93 Difference]: Finished difference Result 163 states and 166 transitions. [2020-09-25 03:27:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:27:57,492 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 140 [2020-09-25 03:27:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:27:57,493 INFO L225 Difference]: With dead ends: 163 [2020-09-25 03:27:57,493 INFO L226 Difference]: Without dead ends: 161 [2020-09-25 03:27:57,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:27:57,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-09-25 03:27:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2020-09-25 03:27:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-25 03:27:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2020-09-25 03:27:57,505 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 140 [2020-09-25 03:27:57,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:27:57,505 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2020-09-25 03:27:57,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:27:57,505 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2020-09-25 03:27:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 03:27:57,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:27:57,509 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:27:57,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 03:27:57,509 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:27:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:27:57,510 INFO L82 PathProgramCache]: Analyzing trace with hash -186119749, now seen corresponding path program 14 times [2020-09-25 03:27:57,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:27:57,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941313260] [2020-09-25 03:27:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:27:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:59,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:59,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 03:27:59,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:27:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-09-25 03:27:59,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:27:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:27:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:27:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 03:27:59,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:27:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:27:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:27:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:27:59,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:27:59,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:27:59,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:27:59,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:00,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 03:28:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:00,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 03:28:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:28:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:28:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:00,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 03:28:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:28:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 03:28:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:00,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 03:28:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:00,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 03:28:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:00,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 03:28:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:00,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:00,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:00,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:00,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:00,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:00,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 200 proven. 140 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 03:28:00,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941313260] [2020-09-25 03:28:00,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:00,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 03:28:00,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198371247] [2020-09-25 03:28:00,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 03:28:00,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:00,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 03:28:00,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:28:00,140 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand 20 states. [2020-09-25 03:28:00,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:00,710 INFO L93 Difference]: Finished difference Result 292 states and 319 transitions. [2020-09-25 03:28:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 03:28:00,711 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 150 [2020-09-25 03:28:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:00,713 INFO L225 Difference]: With dead ends: 292 [2020-09-25 03:28:00,714 INFO L226 Difference]: Without dead ends: 229 [2020-09-25 03:28:00,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 03:28:00,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-25 03:28:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 162. [2020-09-25 03:28:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 03:28:00,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 165 transitions. [2020-09-25 03:28:00,728 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 165 transitions. Word has length 150 [2020-09-25 03:28:00,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:00,729 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 165 transitions. [2020-09-25 03:28:00,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 03:28:00,729 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 165 transitions. [2020-09-25 03:28:00,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 03:28:00,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:00,731 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:00,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 03:28:00,731 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:00,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:00,732 INFO L82 PathProgramCache]: Analyzing trace with hash -693929021, now seen corresponding path program 15 times [2020-09-25 03:28:00,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:00,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500140784] [2020-09-25 03:28:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:01,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 03:28:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:28:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:28:05,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 03:28:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:28:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-09-25 03:28:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:05,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:05,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:05,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 03:28:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:05,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:05,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:05,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 03:28:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:05,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:05,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:05,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 03:28:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:05,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:28:05,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-25 03:28:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:05,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:28:05,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 03:28:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:05,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:05,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 03:28:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:05,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:05,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:05,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 03:28:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:05,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:05,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:05,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 03:28:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:05,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:05,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:05,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:05,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:05,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 200 proven. 184 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-09-25 03:28:05,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500140784] [2020-09-25 03:28:05,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:05,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:28:05,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419111143] [2020-09-25 03:28:05,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:28:05,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:05,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:28:05,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:28:05,988 INFO L87 Difference]: Start difference. First operand 162 states and 165 transitions. Second operand 13 states. [2020-09-25 03:28:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:06,095 INFO L93 Difference]: Finished difference Result 179 states and 182 transitions. [2020-09-25 03:28:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:28:06,095 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-09-25 03:28:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:06,096 INFO L225 Difference]: With dead ends: 179 [2020-09-25 03:28:06,096 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 03:28:06,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:28:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 03:28:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 172. [2020-09-25 03:28:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-25 03:28:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2020-09-25 03:28:06,110 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 156 [2020-09-25 03:28:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:06,110 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2020-09-25 03:28:06,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:28:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2020-09-25 03:28:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 03:28:06,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:06,113 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:06,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 03:28:06,113 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:06,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:06,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1491064175, now seen corresponding path program 16 times [2020-09-25 03:28:06,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:06,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809039902] [2020-09-25 03:28:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:06,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 03:28:07,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:28:07,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1506 [2020-09-25 03:28:07,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 03:28:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:28:07,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 03:28:07,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:28:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:28:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:28:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:28:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:28:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 03:28:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:07,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:28:07,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-25 03:28:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:07,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:07,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:28:07,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:07,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:07,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:07,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 03:28:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:07,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:07,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:07,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:07,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-25 03:28:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:07,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:08,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:08,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:08,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 03:28:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:08,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:28:08,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 03:28:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:08,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:08,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:08,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 03:28:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:08,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:28:08,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 03:28:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:08,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:28:08,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-25 03:28:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:08,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:28:08,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:28:08,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:28:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:28:08,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:28:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:28:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:28:08,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:28:08,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:28:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 252 proven. 184 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-09-25 03:28:08,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809039902] [2020-09-25 03:28:08,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:28:08,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 03:28:08,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843018025] [2020-09-25 03:28:08,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 03:28:08,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:28:08,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 03:28:08,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-25 03:28:08,078 INFO L87 Difference]: Start difference. First operand 172 states and 175 transitions. Second operand 22 states. [2020-09-25 03:28:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:28:08,902 INFO L93 Difference]: Finished difference Result 322 states and 352 transitions. [2020-09-25 03:28:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 03:28:08,907 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 166 [2020-09-25 03:28:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:28:08,910 INFO L225 Difference]: With dead ends: 322 [2020-09-25 03:28:08,910 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 03:28:08,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 03:28:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 03:28:08,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 178. [2020-09-25 03:28:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-25 03:28:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2020-09-25 03:28:08,931 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 166 [2020-09-25 03:28:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:28:08,931 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 181 transitions. [2020-09-25 03:28:08,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 03:28:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 181 transitions. [2020-09-25 03:28:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 03:28:08,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:28:08,936 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:28:08,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 03:28:08,936 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:28:08,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:28:08,937 INFO L82 PathProgramCache]: Analyzing trace with hash -586773351, now seen corresponding path program 17 times [2020-09-25 03:28:08,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:28:08,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463188956] [2020-09-25 03:28:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:28:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:28:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:28:09,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking...