/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/apache-get-tag.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:39:44,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:39:44,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:39:44,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:39:44,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:39:44,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:39:44,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:39:44,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:39:44,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:39:44,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:39:44,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:39:44,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:39:44,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:39:44,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:39:44,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:39:44,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:39:44,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:39:44,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:39:44,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:39:44,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:39:44,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:39:44,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:39:44,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:39:44,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:39:44,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:39:44,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:39:44,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:39:44,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:39:44,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:39:44,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:39:44,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:39:44,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:39:44,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:39:44,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:39:44,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:39:44,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:39:44,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:39:44,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:39:44,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:39:44,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:39:44,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:39:44,598 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 13:39:44,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:39:44,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:39:44,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:39:44,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:39:44,625 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:39:44,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:39:44,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:39:44,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:39:44,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:39:44,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:39:44,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:39:44,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:39:44,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:39:44,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:39:44,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:39:44,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:39:44,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:39:44,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:39:44,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:39:44,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:39:44,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:39:44,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:39:44,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:39:44,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:39:44,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:39:44,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:39:44,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:39:44,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:39:44,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:39:44,631 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:39:45,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:39:45,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:39:45,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:39:45,152 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:39:45,152 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:39:45,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 13:39:45,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/080882dd4/4a589fb9662745f79f4f0f38f58a9ad6/FLAG265fb2c68 [2020-09-25 13:39:45,812 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:39:45,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i [2020-09-25 13:39:45,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/080882dd4/4a589fb9662745f79f4f0f38f58a9ad6/FLAG265fb2c68 [2020-09-25 13:39:46,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/080882dd4/4a589fb9662745f79f4f0f38f58a9ad6 [2020-09-25 13:39:46,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:39:46,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:39:46,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:46,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:39:46,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:39:46,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46, skipping insertion in model container [2020-09-25 13:39:46,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:39:46,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:39:46,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:46,484 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:39:46,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:39:46,555 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:39:46,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46 WrapperNode [2020-09-25 13:39:46,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:39:46,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:39:46,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:39:46,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:39:46,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (1/1) ... [2020-09-25 13:39:46,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:39:46,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:39:46,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:39:46,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:39:46,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (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 13:39:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:39:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:39:46,766 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 13:39:46,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 13:39:46,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:39:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:39:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:39:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 13:39:46,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 13:39:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:39:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:39:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:39:46,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:39:47,139 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:39:47,140 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 13:39:47,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:47 BoogieIcfgContainer [2020-09-25 13:39:47,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:39:47,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:39:47,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:39:47,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:39:47,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:39:46" (1/3) ... [2020-09-25 13:39:47,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af028bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:47, skipping insertion in model container [2020-09-25 13:39:47,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:39:46" (2/3) ... [2020-09-25 13:39:47,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7af028bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:39:47, skipping insertion in model container [2020-09-25 13:39:47,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:39:47" (3/3) ... [2020-09-25 13:39:47,156 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i [2020-09-25 13:39:47,168 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:39:47,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:39:47,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:39:47,237 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:39:47,237 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:39:47,237 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:39:47,238 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:39:47,238 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:39:47,238 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:39:47,238 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:39:47,238 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:39:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-09-25 13:39:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:39:47,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:47,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:47,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:47,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:47,279 INFO L82 PathProgramCache]: Analyzing trace with hash -537390573, now seen corresponding path program 1 times [2020-09-25 13:39:47,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:47,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152996434] [2020-09-25 13:39:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:39:47,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:47,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 13:39:47,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:39:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:39:47,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:39:47,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:47,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:47,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:47,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:47,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:39:47,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:47,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:47,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:47,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:47,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:47,721 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 13:39:47,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152996434] [2020-09-25 13:39:47,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:47,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:47,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029057521] [2020-09-25 13:39:47,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:47,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:47,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:47,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:47,755 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 5 states. [2020-09-25 13:39:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:47,966 INFO L93 Difference]: Finished difference Result 157 states and 242 transitions. [2020-09-25 13:39:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:39:47,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 13:39:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:47,985 INFO L225 Difference]: With dead ends: 157 [2020-09-25 13:39:47,985 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 13:39:47,992 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 13:39:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 13:39:48,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-09-25 13:39:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 13:39:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2020-09-25 13:39:48,064 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 19 [2020-09-25 13:39:48,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:48,065 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2020-09-25 13:39:48,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2020-09-25 13:39:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 13:39:48,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:48,068 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:48,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:39:48,069 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:48,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1383579147, now seen corresponding path program 1 times [2020-09-25 13:39:48,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:48,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215597041] [2020-09-25 13:39:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:39:48,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 13:39:48,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:39:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:39:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:39:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:48,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:48,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 13:39:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:48,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:48,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215597041] [2020-09-25 13:39:48,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:48,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:39:48,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863806359] [2020-09-25 13:39:48,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:39:48,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:48,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:39:48,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:39:48,478 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand 5 states. [2020-09-25 13:39:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:48,597 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-09-25 13:39:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:39:48,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-09-25 13:39:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:48,602 INFO L225 Difference]: With dead ends: 88 [2020-09-25 13:39:48,602 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 13:39:48,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 13:39:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 13:39:48,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 13:39:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 13:39:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-09-25 13:39:48,616 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 25 [2020-09-25 13:39:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:48,617 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-09-25 13:39:48,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:39:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-09-25 13:39:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 13:39:48,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:48,619 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:39:48,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:39:48,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:48,620 INFO L82 PathProgramCache]: Analyzing trace with hash 344115466, now seen corresponding path program 1 times [2020-09-25 13:39:48,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:48,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098920627] [2020-09-25 13:39:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:39:48,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 13:39:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:39:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:39:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:48,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:39:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:39:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:48,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:48,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:48,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:39:48,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:48,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:39:48,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098920627] [2020-09-25 13:39:48,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:48,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:39:48,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301723972] [2020-09-25 13:39:48,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:48,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:48,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:48,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:48,895 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 7 states. [2020-09-25 13:39:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:49,066 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2020-09-25 13:39:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:39:49,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-25 13:39:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:49,069 INFO L225 Difference]: With dead ends: 90 [2020-09-25 13:39:49,069 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 13:39:49,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 13:39:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 13:39:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 13:39:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-09-25 13:39:49,081 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 28 [2020-09-25 13:39:49,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:49,082 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-09-25 13:39:49,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-09-25 13:39:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:39:49,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:49,084 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:49,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:39:49,085 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:49,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1469174755, now seen corresponding path program 1 times [2020-09-25 13:39:49,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:49,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287286305] [2020-09-25 13:39:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:49,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:49,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:39:50,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:39:50,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1375 [2020-09-25 13:39:50,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:39:50,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:39:50,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:50,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:50,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:50,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:39:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:39:50,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:39:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:50,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:50,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:50,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:50,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:39:50,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287286305] [2020-09-25 13:39:50,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:50,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:39:50,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538132159] [2020-09-25 13:39:50,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:50,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:50,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:50,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:50,585 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 7 states. [2020-09-25 13:39:50,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:50,729 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-25 13:39:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:39:50,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 13:39:50,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:50,732 INFO L225 Difference]: With dead ends: 94 [2020-09-25 13:39:50,732 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 13:39:50,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:39:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 13:39:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2020-09-25 13:39:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 13:39:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2020-09-25 13:39:50,746 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 38 [2020-09-25 13:39:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:50,746 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2020-09-25 13:39:50,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2020-09-25 13:39:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:39:50,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:50,748 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:50,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:39:50,749 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1945975399, now seen corresponding path program 1 times [2020-09-25 13:39:50,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:50,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447986472] [2020-09-25 13:39:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:51,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 13:39:51,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:39:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231 [2020-09-25 13:39:51,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:51,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:39:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:39:51,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:39:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:52,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:52,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:52,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:52,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:39:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:52,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:39:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:39:52,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447986472] [2020-09-25 13:39:52,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:52,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:39:52,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470066097] [2020-09-25 13:39:52,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:39:52,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:52,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:39:52,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:39:52,077 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand 7 states. [2020-09-25 13:39:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:52,224 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2020-09-25 13:39:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:39:52,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 13:39:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:52,226 INFO L225 Difference]: With dead ends: 123 [2020-09-25 13:39:52,226 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 13:39:52,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:39:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 13:39:52,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2020-09-25 13:39:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 13:39:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2020-09-25 13:39:52,240 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 38 [2020-09-25 13:39:52,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:52,241 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2020-09-25 13:39:52,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:39:52,241 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2020-09-25 13:39:52,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 13:39:52,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:52,243 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-09-25 13:39:52,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:39:52,243 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:52,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:52,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1177695863, now seen corresponding path program 1 times [2020-09-25 13:39:52,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:52,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621058854] [2020-09-25 13:39:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:52,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 13:39:52,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:52,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-09-25 13:39:52,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:52,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:39:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:39:52,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 13:39:52,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:53,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:53,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:39:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:39:53,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:39:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:53,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:39:53,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:39:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:39:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:53,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:53,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:53,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:53,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:53,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 13:39:53,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621058854] [2020-09-25 13:39:53,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:39:53,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:39:53,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712403147] [2020-09-25 13:39:53,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:39:53,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:53,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:39:53,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:39:53,127 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand 10 states. [2020-09-25 13:39:53,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:53,382 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2020-09-25 13:39:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:39:53,383 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 13:39:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:53,384 INFO L225 Difference]: With dead ends: 117 [2020-09-25 13:39:53,385 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 13:39:53,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:39:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 13:39:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-09-25 13:39:53,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 13:39:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-09-25 13:39:53,397 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 46 [2020-09-25 13:39:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:53,398 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-09-25 13:39:53,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:39:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-09-25 13:39:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 13:39:53,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:53,402 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:53,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:39:53,403 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1826770767, now seen corresponding path program 1 times [2020-09-25 13:39:53,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:53,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236305970] [2020-09-25 13:39:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 13:39:54,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-09-25 13:39:54,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:39:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:39:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 13:39:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:54,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:39:54,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:54,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:39:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:39:54,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:39:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:39:54,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 13:39:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:54,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:54,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:54,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:54,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:54,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:54,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:39:54,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236305970] [2020-09-25 13:39:54,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:54,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:39:54,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246636922] [2020-09-25 13:39:54,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:39:54,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:54,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:39:54,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:54,599 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 9 states. [2020-09-25 13:39:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:55,009 INFO L93 Difference]: Finished difference Result 130 states and 151 transitions. [2020-09-25 13:39:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:39:55,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-25 13:39:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:55,013 INFO L225 Difference]: With dead ends: 130 [2020-09-25 13:39:55,013 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 13:39:55,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:39:55,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 13:39:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2020-09-25 13:39:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-25 13:39:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-09-25 13:39:55,045 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 49 [2020-09-25 13:39:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:55,046 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-09-25 13:39:55,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:39:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-09-25 13:39:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 13:39:55,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:55,051 INFO L422 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:55,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:39:55,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1519048418, now seen corresponding path program 1 times [2020-09-25 13:39:55,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:55,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96263796] [2020-09-25 13:39:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:55,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:39:56,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:39:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1368 [2020-09-25 13:39:56,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:39:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:39:56,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 13:39:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:56,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:39:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:56,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:39:56,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:39:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:39:56,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 13:39:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:56,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:39:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:56,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:56,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:56,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:39:56,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:56,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:56,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 13:39:56,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96263796] [2020-09-25 13:39:56,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:56,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:39:56,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850119327] [2020-09-25 13:39:56,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:39:56,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:56,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:39:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:56,645 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 9 states. [2020-09-25 13:39:56,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:56,880 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-09-25 13:39:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:39:56,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-25 13:39:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:56,883 INFO L225 Difference]: With dead ends: 135 [2020-09-25 13:39:56,883 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 13:39:56,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:39:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 13:39:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2020-09-25 13:39:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 13:39:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2020-09-25 13:39:56,898 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 58 [2020-09-25 13:39:56,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:56,899 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2020-09-25 13:39:56,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:39:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2020-09-25 13:39:56,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 13:39:56,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:56,901 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:39:56,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:39:56,901 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:56,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1733407875, now seen corresponding path program 1 times [2020-09-25 13:39:56,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:56,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815938979] [2020-09-25 13:39:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:57,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:58,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:39:58,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:39:58,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1268 [2020-09-25 13:39:58,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:58,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:39:58,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:39:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 13:39:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:58,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:39:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:58,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:39:58,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:58,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:39:58,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:58,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:39:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:58,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:39:58,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:39:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:58,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:58,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:39:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:39:58,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:58,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:39:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:58,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:58,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:58,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:58,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:39:58,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:58,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:58,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:58,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:39:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:58,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:58,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:58,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:58,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:58,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:58,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:58,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:58,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:39:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:39:58,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:39:58,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:39:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:39:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:39:58,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:39:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:39:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:39:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:39:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:39:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 13:39:58,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815938979] [2020-09-25 13:39:58,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:39:58,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:39:58,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151489078] [2020-09-25 13:39:58,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:39:58,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:39:58,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:39:58,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:39:58,342 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 9 states. [2020-09-25 13:39:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:39:58,553 INFO L93 Difference]: Finished difference Result 158 states and 182 transitions. [2020-09-25 13:39:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:39:58,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-25 13:39:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:39:58,556 INFO L225 Difference]: With dead ends: 158 [2020-09-25 13:39:58,556 INFO L226 Difference]: Without dead ends: 156 [2020-09-25 13:39:58,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:39:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-25 13:39:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2020-09-25 13:39:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 13:39:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 169 transitions. [2020-09-25 13:39:58,568 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 169 transitions. Word has length 62 [2020-09-25 13:39:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:39:58,569 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 169 transitions. [2020-09-25 13:39:58,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:39:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 169 transitions. [2020-09-25 13:39:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 13:39:58,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:39:58,571 INFO L422 BasicCegarLoop]: trace histogram [6, 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, 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 13:39:58,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:39:58,571 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:39:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:39:58,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1967257859, now seen corresponding path program 1 times [2020-09-25 13:39:58,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:39:58,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292596067] [2020-09-25 13:39:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:39:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:39:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:39:58,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:03,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:40:03,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:03,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:40:03,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:03,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:03,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:40:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:40:03,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 13:40:03,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:03,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:03,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:03,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:03,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:40:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:03,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:03,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:03,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:03,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:40:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:03,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:03,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:03,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:40:03,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:03,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:03,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:40:03,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:03,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 13:40:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:03,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:03,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:03,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:03,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:40:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:03,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:03,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:40:03,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:03,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 13:40:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:03,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:03,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:03,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:03,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:03,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:03,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:03,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 13:40:03,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292596067] [2020-09-25 13:40:03,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:03,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:40:03,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5756425] [2020-09-25 13:40:03,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:03,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:03,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:03,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:03,829 INFO L87 Difference]: Start difference. First operand 147 states and 169 transitions. Second operand 11 states. [2020-09-25 13:40:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:04,149 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-09-25 13:40:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:40:04,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-09-25 13:40:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:04,151 INFO L225 Difference]: With dead ends: 157 [2020-09-25 13:40:04,151 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 13:40:04,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:40:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 13:40:04,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-09-25 13:40:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 13:40:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2020-09-25 13:40:04,164 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 63 [2020-09-25 13:40:04,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:04,164 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2020-09-25 13:40:04,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:04,164 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2020-09-25 13:40:04,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 13:40:04,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:04,166 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:04,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:40:04,166 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:04,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:04,167 INFO L82 PathProgramCache]: Analyzing trace with hash -822659134, now seen corresponding path program 1 times [2020-09-25 13:40:04,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:04,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546582131] [2020-09-25 13:40:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:04,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:05,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:05,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:40:05,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1275 [2020-09-25 13:40:05,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:05,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:40:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:40:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:40:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:05,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:05,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:05,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:05,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:05,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:40:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:05,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:05,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:05,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:05,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:05,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:05,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:05,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:05,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:05,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:40:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:05,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:05,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:05,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:05,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:05,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:05,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 13:40:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:05,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:05,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:05,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:40:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:05,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:05,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:05,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:05,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:05,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 13:40:05,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546582131] [2020-09-25 13:40:05,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:05,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:40:05,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191309093] [2020-09-25 13:40:05,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:40:05,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:05,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:40:05,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:40:05,613 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand 9 states. [2020-09-25 13:40:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:05,856 INFO L93 Difference]: Finished difference Result 187 states and 216 transitions. [2020-09-25 13:40:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:40:05,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-25 13:40:05,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:05,861 INFO L225 Difference]: With dead ends: 187 [2020-09-25 13:40:05,861 INFO L226 Difference]: Without dead ends: 185 [2020-09-25 13:40:05,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:40:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-25 13:40:05,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2020-09-25 13:40:05,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 13:40:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 205 transitions. [2020-09-25 13:40:05,887 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 205 transitions. Word has length 65 [2020-09-25 13:40:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:05,888 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 205 transitions. [2020-09-25 13:40:05,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:40:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 205 transitions. [2020-09-25 13:40:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 13:40:05,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:05,889 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:05,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:40:05,890 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:05,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:05,890 INFO L82 PathProgramCache]: Analyzing trace with hash 869213219, now seen corresponding path program 2 times [2020-09-25 13:40:05,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:05,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139493866] [2020-09-25 13:40:05,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:40:10,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:40:10,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4797 [2020-09-25 13:40:10,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:40:10,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:40:10,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 13:40:10,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:10,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:10,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:40:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:10,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:40:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:10,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 13:40:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:10,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:10,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:40:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:10,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:40:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:40:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 13:40:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:10,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:10,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:10,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:10,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:10,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:10,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 13:40:10,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139493866] [2020-09-25 13:40:10,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:10,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:40:10,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267083611] [2020-09-25 13:40:10,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:40:10,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:10,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:40:10,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:40:10,862 INFO L87 Difference]: Start difference. First operand 177 states and 205 transitions. Second operand 9 states. [2020-09-25 13:40:11,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:11,082 INFO L93 Difference]: Finished difference Result 181 states and 209 transitions. [2020-09-25 13:40:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:40:11,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-25 13:40:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:11,084 INFO L225 Difference]: With dead ends: 181 [2020-09-25 13:40:11,084 INFO L226 Difference]: Without dead ends: 176 [2020-09-25 13:40:11,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:40:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-25 13:40:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-09-25 13:40:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 13:40:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 201 transitions. [2020-09-25 13:40:11,098 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 201 transitions. Word has length 70 [2020-09-25 13:40:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:11,099 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 201 transitions. [2020-09-25 13:40:11,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:40:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 201 transitions. [2020-09-25 13:40:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 13:40:11,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:11,100 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:11,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:40:11,101 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:11,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1269119089, now seen corresponding path program 1 times [2020-09-25 13:40:11,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:11,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830539638] [2020-09-25 13:40:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:11,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:11,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 13:40:16,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:40:16,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:40:16,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:40:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:40:16,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 13:40:16,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:16,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:16,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:16,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:40:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:40:16,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:40:16,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:16,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:40:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:16,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:40:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:16,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:40:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:16,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:16,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 13:40:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:16,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:16,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:16,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 13:40:16,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830539638] [2020-09-25 13:40:16,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:16,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:40:16,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369170296] [2020-09-25 13:40:16,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:16,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:16,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:16,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:16,331 INFO L87 Difference]: Start difference. First operand 176 states and 201 transitions. Second operand 11 states. [2020-09-25 13:40:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:16,607 INFO L93 Difference]: Finished difference Result 195 states and 222 transitions. [2020-09-25 13:40:16,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:40:16,609 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2020-09-25 13:40:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:16,611 INFO L225 Difference]: With dead ends: 195 [2020-09-25 13:40:16,612 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 13:40:16,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:40:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 13:40:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 176. [2020-09-25 13:40:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-25 13:40:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 201 transitions. [2020-09-25 13:40:16,637 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 201 transitions. Word has length 76 [2020-09-25 13:40:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:16,637 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 201 transitions. [2020-09-25 13:40:16,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 201 transitions. [2020-09-25 13:40:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 13:40:16,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:16,639 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:16,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:40:16,639 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:16,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1147260786, now seen corresponding path program 1 times [2020-09-25 13:40:16,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:16,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662317840] [2020-09-25 13:40:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 13:40:21,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:40:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:40:21,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:40:21,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:40:21,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 13:40:21,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:21,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:21,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:21,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:21,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:21,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:40:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:21,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:21,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:21,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:40:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:21,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:21,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 13:40:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:21,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:21,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:21,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:40:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:21,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:21,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:21,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 13:40:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:21,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:21,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:21,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:40:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:21,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:21,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:21,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:21,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:21,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:21,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 13:40:21,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662317840] [2020-09-25 13:40:21,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:21,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:40:21,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350788872] [2020-09-25 13:40:21,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:21,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:21,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:21,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:21,810 INFO L87 Difference]: Start difference. First operand 176 states and 201 transitions. Second operand 11 states. [2020-09-25 13:40:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:22,136 INFO L93 Difference]: Finished difference Result 218 states and 251 transitions. [2020-09-25 13:40:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:40:22,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 13:40:22,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:22,137 INFO L225 Difference]: With dead ends: 218 [2020-09-25 13:40:22,138 INFO L226 Difference]: Without dead ends: 150 [2020-09-25 13:40:22,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:40:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-09-25 13:40:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-09-25 13:40:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 13:40:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 163 transitions. [2020-09-25 13:40:22,155 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 163 transitions. Word has length 79 [2020-09-25 13:40:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:22,155 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 163 transitions. [2020-09-25 13:40:22,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:22,156 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 163 transitions. [2020-09-25 13:40:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 13:40:22,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:22,157 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:22,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:40:22,157 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:22,158 INFO L82 PathProgramCache]: Analyzing trace with hash 341113206, now seen corresponding path program 2 times [2020-09-25 13:40:22,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:22,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435894974] [2020-09-25 13:40:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 13:40:27,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:40:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:40:27,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:40:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:40:27,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 13:40:27,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:27,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:27,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:27,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:27,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:40:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:27,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:27,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:40:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:27,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 13:40:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:27,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:27,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:40:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:27,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 13:40:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:27,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 13:40:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:27,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:27,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:27,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:27,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:27,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:27,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 13:40:27,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435894974] [2020-09-25 13:40:27,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:40:27,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 13:40:27,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816830690] [2020-09-25 13:40:27,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:27,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:27,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:27,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:27,367 INFO L87 Difference]: Start difference. First operand 146 states and 163 transitions. Second operand 11 states. [2020-09-25 13:40:27,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:27,632 INFO L93 Difference]: Finished difference Result 193 states and 218 transitions. [2020-09-25 13:40:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:40:27,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 13:40:27,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:27,634 INFO L225 Difference]: With dead ends: 193 [2020-09-25 13:40:27,634 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 13:40:27,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:40:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 13:40:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-09-25 13:40:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 13:40:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2020-09-25 13:40:27,644 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 79 [2020-09-25 13:40:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:27,645 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2020-09-25 13:40:27,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:27,645 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2020-09-25 13:40:27,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 13:40:27,645 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:27,645 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:27,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 13:40:27,646 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:27,648 INFO L82 PathProgramCache]: Analyzing trace with hash -343631243, now seen corresponding path program 1 times [2020-09-25 13:40:27,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:27,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054273403] [2020-09-25 13:40:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:40:32,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:40:32,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:40:32,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:40:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:40:32,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:40:32,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:32,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:32,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:32,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:40:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:32,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:40:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:40:32,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:40:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:40:32,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:40:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:32,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:40:32,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 13:40:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:32,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:32,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:32,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:32,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:32,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:32,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:32,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:32,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-25 13:40:32,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054273403] [2020-09-25 13:40:32,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:32,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:40:32,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975213730] [2020-09-25 13:40:32,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:32,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:32,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:32,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:32,860 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand 11 states. [2020-09-25 13:40:33,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:33,212 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2020-09-25 13:40:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:40:33,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-09-25 13:40:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:33,214 INFO L225 Difference]: With dead ends: 199 [2020-09-25 13:40:33,215 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 13:40:33,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:40:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 13:40:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2020-09-25 13:40:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 13:40:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2020-09-25 13:40:33,236 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 83 [2020-09-25 13:40:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:33,236 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2020-09-25 13:40:33,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2020-09-25 13:40:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 13:40:33,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:33,239 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:33,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 13:40:33,239 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:33,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:33,240 INFO L82 PathProgramCache]: Analyzing trace with hash 813915649, now seen corresponding path program 1 times [2020-09-25 13:40:33,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:33,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31977029] [2020-09-25 13:40:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:33,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:33,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 13:40:38,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:40:38,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:40:38,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:40:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 13:40:38,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:40:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:38,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:40:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:40:38,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:40:38,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:40:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:38,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:38,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:38,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 13:40:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:38,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:40:38,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:40:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:40:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:40:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:38,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:40:38,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:40:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:40:38,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:40:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:40:38,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 13:40:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:38,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:38,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:40:38,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 13:40:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:38,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:38,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 13:40:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:38,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:40:38,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:38,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 13:40:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:40:38,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:40:38,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:40:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:40:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:40:38,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:40:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:40:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:40:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:40:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:40:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-09-25 13:40:38,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31977029] [2020-09-25 13:40:38,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:40:38,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:40:38,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306598604] [2020-09-25 13:40:38,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:40:38,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:40:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:40:38,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:40:38,530 INFO L87 Difference]: Start difference. First operand 184 states and 209 transitions. Second operand 11 states. [2020-09-25 13:40:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:40:38,875 INFO L93 Difference]: Finished difference Result 221 states and 256 transitions. [2020-09-25 13:40:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:40:38,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-09-25 13:40:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:40:38,877 INFO L225 Difference]: With dead ends: 221 [2020-09-25 13:40:38,877 INFO L226 Difference]: Without dead ends: 148 [2020-09-25 13:40:38,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:40:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-09-25 13:40:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-09-25 13:40:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 13:40:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2020-09-25 13:40:38,895 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 97 [2020-09-25 13:40:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:40:38,895 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2020-09-25 13:40:38,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:40:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2020-09-25 13:40:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-09-25 13:40:38,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:40:38,900 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:40:38,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 13:40:38,900 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:40:38,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:40:38,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1992677655, now seen corresponding path program 2 times [2020-09-25 13:40:38,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:40:38,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377748533] [2020-09-25 13:40:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:40:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:40:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:40:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking...