/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:15:23,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:15:23,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:15:23,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:15:23,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:15:23,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:15:23,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:15:23,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:15:23,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:15:23,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:15:23,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:15:23,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:15:23,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:15:23,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:15:23,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:15:23,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:15:23,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:15:23,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:15:23,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:15:23,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:15:23,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:15:23,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:15:23,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:15:23,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:15:23,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:15:23,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:15:23,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:15:23,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:15:23,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:15:23,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:15:23,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:15:23,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:15:23,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:15:23,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:15:23,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:15:23,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:15:23,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:15:23,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:15:23,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:15:23,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:15:23,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:15:23,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:15:23,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:15:23,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:15:23,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:15:23,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:15:23,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:15:23,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:15:23,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:15:23,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:15:23,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:15:23,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:15:23,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:15:23,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:15:23,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:15:23,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:15:23,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:15:23,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:15:23,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:15:23,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:15:23,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:15:23,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:15:23,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:15:23,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:15:23,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:15:23,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:15:23,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:15:23,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:15:23,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:15:23,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:15:23,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:15:23,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:15:24,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:15:24,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:15:24,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:15:24,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:15:24,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:15:24,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:15:24,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd969a3ba/95b1ba9ef71c47b1a144dd2b600d966b/FLAG2ff84e1b5 [2020-10-15 03:15:24,737 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:15:24,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:15:24,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd969a3ba/95b1ba9ef71c47b1a144dd2b600d966b/FLAG2ff84e1b5 [2020-10-15 03:15:24,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd969a3ba/95b1ba9ef71c47b1a144dd2b600d966b [2020-10-15 03:15:24,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:15:24,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:15:24,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:15:24,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:15:24,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:15:24,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:15:24" (1/1) ... [2020-10-15 03:15:24,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@651f0a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:24, skipping insertion in model container [2020-10-15 03:15:24,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:15:24" (1/1) ... [2020-10-15 03:15:24,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:15:25,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:15:25,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:15:25,745 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:15:26,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:15:26,150 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:15:26,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26 WrapperNode [2020-10-15 03:15:26,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:15:26,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:15:26,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:15:26,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:15:26,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (1/1) ... [2020-10-15 03:15:26,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (1/1) ... [2020-10-15 03:15:26,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (1/1) ... [2020-10-15 03:15:26,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (1/1) ... [2020-10-15 03:15:26,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (1/1) ... [2020-10-15 03:15:26,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (1/1) ... [2020-10-15 03:15:26,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (1/1) ... [2020-10-15 03:15:26,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:15:26,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:15:26,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:15:26,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:15:26,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:15:26,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:15:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:15:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:15:26,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:15:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:15:26,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:15:26,486 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:15:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:15:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:15:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:15:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:15:26,487 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:15:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:15:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:15:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:15:26,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:15:28,390 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:15:28,391 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:15:28,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:15:28 BoogieIcfgContainer [2020-10-15 03:15:28,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:15:28,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:15:28,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:15:28,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:15:28,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:15:24" (1/3) ... [2020-10-15 03:15:28,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118314fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:15:28, skipping insertion in model container [2020-10-15 03:15:28,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:15:26" (2/3) ... [2020-10-15 03:15:28,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118314fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:15:28, skipping insertion in model container [2020-10-15 03:15:28,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:15:28" (3/3) ... [2020-10-15 03:15:28,408 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2020-10-15 03:15:28,421 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:15:28,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-15 03:15:28,449 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 03:15:28,480 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:15:28,480 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:15:28,480 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:15:28,480 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:15:28,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:15:28,480 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:15:28,481 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:15:28,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:15:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-10-15 03:15:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:15:28,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:28,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:28,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:28,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1084347770, now seen corresponding path program 1 times [2020-10-15 03:15:28,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:28,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099372609] [2020-10-15 03:15:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:28,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:30,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:33,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:33,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:33,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:15:33,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-15 03:15:33,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:33,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:33,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:15:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:15:34,626 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:15:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:34,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:34,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:34,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:34,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:15:34,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:34,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:34,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:34,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099372609] [2020-10-15 03:15:34,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:34,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:15:34,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818301796] [2020-10-15 03:15:34,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:34,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:34,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:34,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:34,743 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 8 states. [2020-10-15 03:15:35,261 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-15 03:15:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:38,072 INFO L93 Difference]: Finished difference Result 557 states and 905 transitions. [2020-10-15 03:15:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:15:38,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 03:15:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:38,096 INFO L225 Difference]: With dead ends: 557 [2020-10-15 03:15:38,096 INFO L226 Difference]: Without dead ends: 470 [2020-10-15 03:15:38,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:15:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-15 03:15:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 278. [2020-10-15 03:15:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-15 03:15:38,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 338 transitions. [2020-10-15 03:15:38,176 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 338 transitions. Word has length 52 [2020-10-15 03:15:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:38,177 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 338 transitions. [2020-10-15 03:15:38,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 338 transitions. [2020-10-15 03:15:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:15:38,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:38,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:38,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:15:38,182 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:38,182 INFO L82 PathProgramCache]: Analyzing trace with hash 129208709, now seen corresponding path program 1 times [2020-10-15 03:15:38,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:38,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729989183] [2020-10-15 03:15:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:39,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:40,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:43,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:15:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:15:43,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:43,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:43,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:15:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:15:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-15 03:15:43,852 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:15:43,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:43,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:43,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:15:43,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:43,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:15:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:43,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729989183] [2020-10-15 03:15:43,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:43,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:15:43,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181813175] [2020-10-15 03:15:43,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:15:43,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:43,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:15:43,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:15:43,900 INFO L87 Difference]: Start difference. First operand 278 states and 338 transitions. Second operand 9 states. [2020-10-15 03:15:44,223 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-15 03:15:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:46,500 INFO L93 Difference]: Finished difference Result 464 states and 598 transitions. [2020-10-15 03:15:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:15:46,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 03:15:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:46,507 INFO L225 Difference]: With dead ends: 464 [2020-10-15 03:15:46,507 INFO L226 Difference]: Without dead ends: 458 [2020-10-15 03:15:46,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:15:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-10-15 03:15:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 272. [2020-10-15 03:15:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-15 03:15:46,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 332 transitions. [2020-10-15 03:15:46,562 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 332 transitions. Word has length 52 [2020-10-15 03:15:46,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:46,563 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 332 transitions. [2020-10-15 03:15:46,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:15:46,563 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 332 transitions. [2020-10-15 03:15:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:15:46,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:46,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:46,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:15:46,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:46,567 INFO L82 PathProgramCache]: Analyzing trace with hash -242963161, now seen corresponding path program 1 times [2020-10-15 03:15:46,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:46,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288140275] [2020-10-15 03:15:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:47,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:49,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:51,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:51,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:15:51,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:15:51,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:51,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:51,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:15:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 03:15:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:15:52,266 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:15:52,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:15:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:52,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:52,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:15:52,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:15:52,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:15:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:52,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:15:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:15:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:15:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:15:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:15:52,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288140275] [2020-10-15 03:15:52,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:15:52,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:15:52,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10037820] [2020-10-15 03:15:52,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:15:52,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:15:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:15:52,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:15:52,324 INFO L87 Difference]: Start difference. First operand 272 states and 332 transitions. Second operand 8 states. [2020-10-15 03:15:52,807 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 03:15:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:15:54,413 INFO L93 Difference]: Finished difference Result 456 states and 581 transitions. [2020-10-15 03:15:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:15:54,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-15 03:15:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:15:54,417 INFO L225 Difference]: With dead ends: 456 [2020-10-15 03:15:54,417 INFO L226 Difference]: Without dead ends: 444 [2020-10-15 03:15:54,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-15 03:15:54,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-15 03:15:54,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 270. [2020-10-15 03:15:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 03:15:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 329 transitions. [2020-10-15 03:15:54,459 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 329 transitions. Word has length 52 [2020-10-15 03:15:54,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:15:54,462 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 329 transitions. [2020-10-15 03:15:54,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:15:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 329 transitions. [2020-10-15 03:15:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:15:54,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:15:54,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:15:54,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:15:54,472 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:15:54,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:15:54,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1623466024, now seen corresponding path program 1 times [2020-10-15 03:15:54,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:15:54,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746586034] [2020-10-15 03:15:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:15:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:15:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:54,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:15:59,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:15:59,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:15:59,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:15:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:15:59,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:15:59,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:15:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:15:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:15:59,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:15:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:00,063 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:16:00,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:00,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:00,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:00,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:00,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:16:00,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:00,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746586034] [2020-10-15 03:16:00,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:00,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:00,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500560071] [2020-10-15 03:16:00,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:00,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:00,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:00,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:00,110 INFO L87 Difference]: Start difference. First operand 270 states and 329 transitions. Second operand 9 states. [2020-10-15 03:16:01,007 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 200 [2020-10-15 03:16:02,100 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-10-15 03:16:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:03,721 INFO L93 Difference]: Finished difference Result 485 states and 621 transitions. [2020-10-15 03:16:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:03,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 03:16:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:03,726 INFO L225 Difference]: With dead ends: 485 [2020-10-15 03:16:03,727 INFO L226 Difference]: Without dead ends: 476 [2020-10-15 03:16:03,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:16:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-15 03:16:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 268. [2020-10-15 03:16:03,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 03:16:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 326 transitions. [2020-10-15 03:16:03,758 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 326 transitions. Word has length 52 [2020-10-15 03:16:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:03,758 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 326 transitions. [2020-10-15 03:16:03,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 326 transitions. [2020-10-15 03:16:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:16:03,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:03,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:03,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:16:03,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:03,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash -943940407, now seen corresponding path program 1 times [2020-10-15 03:16:03,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:03,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896129594] [2020-10-15 03:16:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:03,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:06,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:08,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:08,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:16:08,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:16:08,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:16:08,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:08,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 03:16:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:09,140 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:16:09,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:09,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:09,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:16:09,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:09,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:09,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:09,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896129594] [2020-10-15 03:16:09,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:09,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:09,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001292901] [2020-10-15 03:16:09,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:09,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:09,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:09,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:09,175 INFO L87 Difference]: Start difference. First operand 268 states and 326 transitions. Second operand 9 states. [2020-10-15 03:16:09,460 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 03:16:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:11,103 INFO L93 Difference]: Finished difference Result 384 states and 471 transitions. [2020-10-15 03:16:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:16:11,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 03:16:11,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:11,107 INFO L225 Difference]: With dead ends: 384 [2020-10-15 03:16:11,108 INFO L226 Difference]: Without dead ends: 377 [2020-10-15 03:16:11,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:16:11,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-15 03:16:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 266. [2020-10-15 03:16:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 03:16:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 323 transitions. [2020-10-15 03:16:11,134 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 323 transitions. Word has length 52 [2020-10-15 03:16:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:11,135 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 323 transitions. [2020-10-15 03:16:11,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:11,135 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 323 transitions. [2020-10-15 03:16:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 03:16:11,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:11,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:11,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:16:11,137 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1417237691, now seen corresponding path program 1 times [2020-10-15 03:16:11,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:11,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367789287] [2020-10-15 03:16:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:11,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:11,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:13,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:14,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:16,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:16,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 03:16:16,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:16:16,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:16:16,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:16,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 03:16:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:16,735 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:16:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:16,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:16,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:16,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:16,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:16,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:16:16,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:16,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:16,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:16,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:16,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367789287] [2020-10-15 03:16:16,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:16,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:16,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916564501] [2020-10-15 03:16:16,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:16,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:16,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:16,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:16,795 INFO L87 Difference]: Start difference. First operand 266 states and 323 transitions. Second operand 9 states. [2020-10-15 03:16:17,236 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-15 03:16:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:18,856 INFO L93 Difference]: Finished difference Result 465 states and 602 transitions. [2020-10-15 03:16:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:18,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-15 03:16:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:18,860 INFO L225 Difference]: With dead ends: 465 [2020-10-15 03:16:18,860 INFO L226 Difference]: Without dead ends: 448 [2020-10-15 03:16:18,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:16:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-15 03:16:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 249. [2020-10-15 03:16:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-15 03:16:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 304 transitions. [2020-10-15 03:16:18,885 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 304 transitions. Word has length 52 [2020-10-15 03:16:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:18,885 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 304 transitions. [2020-10-15 03:16:18,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 304 transitions. [2020-10-15 03:16:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:16:18,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:18,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:18,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:16:18,887 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:18,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:18,887 INFO L82 PathProgramCache]: Analyzing trace with hash 965656049, now seen corresponding path program 1 times [2020-10-15 03:16:18,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:18,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138030793] [2020-10-15 03:16:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:18,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:23,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:23,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:16:23,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:16:23,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:16:23,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:23,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:23,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:23,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:16:23,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:24,579 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:16:24,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:24,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:24,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:24,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:24,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:16:24,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:24,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:24,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:24,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138030793] [2020-10-15 03:16:24,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:24,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:24,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236530776] [2020-10-15 03:16:24,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:24,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:24,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:24,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:24,610 INFO L87 Difference]: Start difference. First operand 249 states and 304 transitions. Second operand 8 states. [2020-10-15 03:16:24,895 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:16:26,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:26,424 INFO L93 Difference]: Finished difference Result 425 states and 548 transitions. [2020-10-15 03:16:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:16:26,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-15 03:16:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:26,427 INFO L225 Difference]: With dead ends: 425 [2020-10-15 03:16:26,427 INFO L226 Difference]: Without dead ends: 409 [2020-10-15 03:16:26,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:16:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-15 03:16:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 240. [2020-10-15 03:16:26,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-15 03:16:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 292 transitions. [2020-10-15 03:16:26,456 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 292 transitions. Word has length 54 [2020-10-15 03:16:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:26,458 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 292 transitions. [2020-10-15 03:16:26,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 292 transitions. [2020-10-15 03:16:26,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:16:26,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:26,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:26,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:16:26,460 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1160822957, now seen corresponding path program 1 times [2020-10-15 03:16:26,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:26,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059264965] [2020-10-15 03:16:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:26,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:27,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:28,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:28,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:29,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:30,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:31,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:16:31,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:16:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:16:31,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:31,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:16:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:31,811 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:16:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:31,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:31,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:31,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:31,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:16:31,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:31,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:31,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:31,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:31,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059264965] [2020-10-15 03:16:31,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:31,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:31,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398993367] [2020-10-15 03:16:31,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:31,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:31,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:31,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:31,843 INFO L87 Difference]: Start difference. First operand 240 states and 292 transitions. Second operand 8 states. [2020-10-15 03:16:32,166 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:16:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:34,946 INFO L93 Difference]: Finished difference Result 512 states and 681 transitions. [2020-10-15 03:16:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:16:34,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-15 03:16:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:34,952 INFO L225 Difference]: With dead ends: 512 [2020-10-15 03:16:34,953 INFO L226 Difference]: Without dead ends: 463 [2020-10-15 03:16:34,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:16:34,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-15 03:16:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 356. [2020-10-15 03:16:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-15 03:16:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 459 transitions. [2020-10-15 03:16:35,211 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 459 transitions. Word has length 54 [2020-10-15 03:16:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:35,212 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 459 transitions. [2020-10-15 03:16:35,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 459 transitions. [2020-10-15 03:16:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 03:16:35,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:35,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:35,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:16:35,218 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:35,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1332085811, now seen corresponding path program 1 times [2020-10-15 03:16:35,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:35,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677316987] [2020-10-15 03:16:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:35,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:35,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:35,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:40,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:40,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 03:16:40,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:16:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:16:40,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:40,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:16:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-15 03:16:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:16:40,636 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:16:40,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:40,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:40,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:40,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:40,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:16:40,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:40,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:40,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:40,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677316987] [2020-10-15 03:16:40,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:40,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:16:40,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538647286] [2020-10-15 03:16:40,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:16:40,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:40,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:16:40,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:16:40,672 INFO L87 Difference]: Start difference. First operand 356 states and 459 transitions. Second operand 9 states. [2020-10-15 03:16:40,999 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-15 03:16:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:42,221 INFO L93 Difference]: Finished difference Result 451 states and 598 transitions. [2020-10-15 03:16:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:16:42,222 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-15 03:16:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:42,225 INFO L225 Difference]: With dead ends: 451 [2020-10-15 03:16:42,226 INFO L226 Difference]: Without dead ends: 361 [2020-10-15 03:16:42,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:16:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-15 03:16:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 343. [2020-10-15 03:16:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-10-15 03:16:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 441 transitions. [2020-10-15 03:16:42,309 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 441 transitions. Word has length 54 [2020-10-15 03:16:42,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:42,310 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 441 transitions. [2020-10-15 03:16:42,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:16:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 441 transitions. [2020-10-15 03:16:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 03:16:42,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:42,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:42,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:16:42,314 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:42,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash -828589486, now seen corresponding path program 1 times [2020-10-15 03:16:42,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:42,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747337367] [2020-10-15 03:16:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:42,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:43,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:43,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:47,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:47,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 03:16:47,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 03:16:47,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:16:47,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:47,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:16:47,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:16:47,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 03:16:47,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:47,693 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:16:47,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:47,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:47,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:47,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:47,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 03:16:47,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:47,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:16:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:16:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:47,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747337367] [2020-10-15 03:16:47,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:47,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:16:47,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370035136] [2020-10-15 03:16:47,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:16:47,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:47,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:16:47,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:47,716 INFO L87 Difference]: Start difference. First operand 343 states and 441 transitions. Second operand 8 states. [2020-10-15 03:16:48,018 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-15 03:16:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:49,416 INFO L93 Difference]: Finished difference Result 786 states and 1097 transitions. [2020-10-15 03:16:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:16:49,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-10-15 03:16:49,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:49,420 INFO L225 Difference]: With dead ends: 786 [2020-10-15 03:16:49,420 INFO L226 Difference]: Without dead ends: 670 [2020-10-15 03:16:49,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:16:49,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-15 03:16:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 311. [2020-10-15 03:16:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-15 03:16:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 403 transitions. [2020-10-15 03:16:49,477 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 403 transitions. Word has length 55 [2020-10-15 03:16:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:49,477 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 403 transitions. [2020-10-15 03:16:49,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:16:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 403 transitions. [2020-10-15 03:16:49,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:16:49,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:49,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:49,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:16:49,479 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:49,480 INFO L82 PathProgramCache]: Analyzing trace with hash 828265866, now seen corresponding path program 1 times [2020-10-15 03:16:49,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:49,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890679019] [2020-10-15 03:16:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:49,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:49,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:51,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:54,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:16:54,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:16:54,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:16:54,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:54,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:16:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:16:54,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 03:16:54,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:54,780 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:16:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:16:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:16:54,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:16:54,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:16:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:16:54,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:16:54,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:16:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:16:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:16:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:16:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:16:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:16:54,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890679019] [2020-10-15 03:16:54,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:16:54,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:16:54,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920333462] [2020-10-15 03:16:54,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:16:54,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:16:54,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:16:54,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:16:54,829 INFO L87 Difference]: Start difference. First operand 311 states and 403 transitions. Second operand 6 states. [2020-10-15 03:16:55,090 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 03:16:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:16:55,729 INFO L93 Difference]: Finished difference Result 638 states and 875 transitions. [2020-10-15 03:16:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:16:55,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-15 03:16:55,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:16:55,732 INFO L225 Difference]: With dead ends: 638 [2020-10-15 03:16:55,732 INFO L226 Difference]: Without dead ends: 437 [2020-10-15 03:16:55,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:16:55,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-15 03:16:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 435. [2020-10-15 03:16:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-15 03:16:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 591 transitions. [2020-10-15 03:16:55,804 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 591 transitions. Word has length 69 [2020-10-15 03:16:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:16:55,805 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 591 transitions. [2020-10-15 03:16:55,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:16:55,805 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 591 transitions. [2020-10-15 03:16:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:16:55,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:16:55,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:16:55,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:16:55,807 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:16:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:16:55,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1780634623, now seen corresponding path program 1 times [2020-10-15 03:16:55,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:16:55,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082510532] [2020-10-15 03:16:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:16:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:16:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:55,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:55,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:16:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:00,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:00,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:17:00,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:17:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:17:00,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:00,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:17:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:17:00,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:01,154 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:17:01,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:01,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:01,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:01,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:01,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082510532] [2020-10-15 03:17:01,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:01,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:17:01,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935096708] [2020-10-15 03:17:01,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:01,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:01,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:01,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:01,178 INFO L87 Difference]: Start difference. First operand 435 states and 591 transitions. Second operand 8 states. [2020-10-15 03:17:01,449 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:17:02,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:02,441 INFO L93 Difference]: Finished difference Result 1092 states and 1580 transitions. [2020-10-15 03:17:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:17:02,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-15 03:17:02,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:02,446 INFO L225 Difference]: With dead ends: 1092 [2020-10-15 03:17:02,446 INFO L226 Difference]: Without dead ends: 829 [2020-10-15 03:17:02,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:17:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-15 03:17:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 435. [2020-10-15 03:17:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-15 03:17:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 589 transitions. [2020-10-15 03:17:02,523 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 589 transitions. Word has length 71 [2020-10-15 03:17:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:02,523 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 589 transitions. [2020-10-15 03:17:02,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 589 transitions. [2020-10-15 03:17:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-15 03:17:02,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:02,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:02,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:17:02,525 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:02,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:02,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2121377316, now seen corresponding path program 1 times [2020-10-15 03:17:02,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:02,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779812471] [2020-10-15 03:17:02,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:04,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:07,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 03:17:07,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:17:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:17:07,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:07,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:17:07,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:17:07,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:07,963 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:17:07,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:07,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:07,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:07,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:07,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:07,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:17:07,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:07,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:07,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:08,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779812471] [2020-10-15 03:17:08,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:08,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:08,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243025738] [2020-10-15 03:17:08,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:08,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:08,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:08,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:08,003 INFO L87 Difference]: Start difference. First operand 435 states and 589 transitions. Second operand 6 states. [2020-10-15 03:17:08,291 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:17:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:09,194 INFO L93 Difference]: Finished difference Result 1893 states and 2845 transitions. [2020-10-15 03:17:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:17:09,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-10-15 03:17:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:09,205 INFO L225 Difference]: With dead ends: 1893 [2020-10-15 03:17:09,205 INFO L226 Difference]: Without dead ends: 1650 [2020-10-15 03:17:09,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:17:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2020-10-15 03:17:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 676. [2020-10-15 03:17:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-10-15 03:17:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 952 transitions. [2020-10-15 03:17:09,397 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 952 transitions. Word has length 73 [2020-10-15 03:17:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:09,397 INFO L479 AbstractCegarLoop]: Abstraction has 676 states and 952 transitions. [2020-10-15 03:17:09,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 952 transitions. [2020-10-15 03:17:09,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:09,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:09,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:09,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:17:09,400 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:09,400 INFO L82 PathProgramCache]: Analyzing trace with hash -2045828979, now seen corresponding path program 1 times [2020-10-15 03:17:09,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:09,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15646716] [2020-10-15 03:17:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:09,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:09,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:09,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:13,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:14,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:14,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:17:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:17:14,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:14,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:17:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:17:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:14,682 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:17:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:14,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:14,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:17:14,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:14,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:14,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:14,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15646716] [2020-10-15 03:17:14,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:14,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:14,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514810397] [2020-10-15 03:17:14,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:14,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:14,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:14,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:14,715 INFO L87 Difference]: Start difference. First operand 676 states and 952 transitions. Second operand 6 states. [2020-10-15 03:17:14,991 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 03:17:15,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:15,946 INFO L93 Difference]: Finished difference Result 2566 states and 3825 transitions. [2020-10-15 03:17:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:17:15,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:17:15,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:15,956 INFO L225 Difference]: With dead ends: 2566 [2020-10-15 03:17:15,956 INFO L226 Difference]: Without dead ends: 2082 [2020-10-15 03:17:15,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:17:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2020-10-15 03:17:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1375. [2020-10-15 03:17:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-10-15 03:17:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2005 transitions. [2020-10-15 03:17:16,286 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2005 transitions. Word has length 75 [2020-10-15 03:17:16,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:16,286 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 2005 transitions. [2020-10-15 03:17:16,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:16,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2005 transitions. [2020-10-15 03:17:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:16,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:16,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:16,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:17:16,293 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:16,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:16,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2131310988, now seen corresponding path program 1 times [2020-10-15 03:17:16,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:16,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047120072] [2020-10-15 03:17:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:16,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:16,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:21,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:21,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:17:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:17:21,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:21,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:17:21,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:17:21,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:21,611 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:17:21,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:21,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:17:21,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:21,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:21,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047120072] [2020-10-15 03:17:21,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:21,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:21,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629685583] [2020-10-15 03:17:21,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:21,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:21,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:21,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:21,647 INFO L87 Difference]: Start difference. First operand 1375 states and 2005 transitions. Second operand 6 states. [2020-10-15 03:17:21,887 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:17:23,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:23,336 INFO L93 Difference]: Finished difference Result 4708 states and 7003 transitions. [2020-10-15 03:17:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:17:23,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:17:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:23,349 INFO L225 Difference]: With dead ends: 4708 [2020-10-15 03:17:23,350 INFO L226 Difference]: Without dead ends: 3525 [2020-10-15 03:17:23,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2020-10-15 03:17:24,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3521. [2020-10-15 03:17:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3521 states. [2020-10-15 03:17:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 5137 transitions. [2020-10-15 03:17:24,287 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 5137 transitions. Word has length 75 [2020-10-15 03:17:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:24,288 INFO L479 AbstractCegarLoop]: Abstraction has 3521 states and 5137 transitions. [2020-10-15 03:17:24,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:24,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 5137 transitions. [2020-10-15 03:17:24,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:24,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:24,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:24,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:17:24,292 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:24,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:24,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2064817476, now seen corresponding path program 1 times [2020-10-15 03:17:24,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:24,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821590895] [2020-10-15 03:17:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:24,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:26,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:26,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:26,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:29,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:29,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:29,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:17:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:17:29,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:29,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:17:29,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:17:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:29,599 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:17:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:29,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:29,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:29,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:29,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:17:29,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:29,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:17:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:29,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:17:29,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:29,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821590895] [2020-10-15 03:17:29,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:29,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:17:29,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245285559] [2020-10-15 03:17:29,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:29,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:29,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:29,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:29,642 INFO L87 Difference]: Start difference. First operand 3521 states and 5137 transitions. Second operand 6 states. [2020-10-15 03:17:29,928 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-15 03:17:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:31,589 INFO L93 Difference]: Finished difference Result 8162 states and 11992 transitions. [2020-10-15 03:17:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:17:31,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-15 03:17:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:31,606 INFO L225 Difference]: With dead ends: 8162 [2020-10-15 03:17:31,606 INFO L226 Difference]: Without dead ends: 4833 [2020-10-15 03:17:31,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:17:31,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2020-10-15 03:17:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 3521. [2020-10-15 03:17:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3521 states. [2020-10-15 03:17:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3521 states to 3521 states and 5113 transitions. [2020-10-15 03:17:32,383 INFO L78 Accepts]: Start accepts. Automaton has 3521 states and 5113 transitions. Word has length 75 [2020-10-15 03:17:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:32,383 INFO L479 AbstractCegarLoop]: Abstraction has 3521 states and 5113 transitions. [2020-10-15 03:17:32,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:17:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3521 states and 5113 transitions. [2020-10-15 03:17:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:32,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:32,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:32,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:17:32,387 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:32,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:32,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1431150963, now seen corresponding path program 1 times [2020-10-15 03:17:32,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:32,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463607441] [2020-10-15 03:17:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:32,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:33,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:33,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:37,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:37,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:37,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:17:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:17:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:37,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 03:17:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:37,823 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:17:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:37,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:37,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:37,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:37,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:17:37,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:37,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:37,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:37,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:37,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:17:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:37,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463607441] [2020-10-15 03:17:37,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:37,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:17:37,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899070793] [2020-10-15 03:17:37,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:37,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:37,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:37,873 INFO L87 Difference]: Start difference. First operand 3521 states and 5113 transitions. Second operand 8 states. [2020-10-15 03:17:38,132 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 03:17:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:41,871 INFO L93 Difference]: Finished difference Result 15773 states and 23063 transitions. [2020-10-15 03:17:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:17:41,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 03:17:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:41,918 INFO L225 Difference]: With dead ends: 15773 [2020-10-15 03:17:41,918 INFO L226 Difference]: Without dead ends: 12444 [2020-10-15 03:17:41,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:17:41,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12444 states. [2020-10-15 03:17:43,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12444 to 6018. [2020-10-15 03:17:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6018 states. [2020-10-15 03:17:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6018 states to 6018 states and 8704 transitions. [2020-10-15 03:17:43,215 INFO L78 Accepts]: Start accepts. Automaton has 6018 states and 8704 transitions. Word has length 75 [2020-10-15 03:17:43,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:43,215 INFO L479 AbstractCegarLoop]: Abstraction has 6018 states and 8704 transitions. [2020-10-15 03:17:43,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:43,216 INFO L276 IsEmpty]: Start isEmpty. Operand 6018 states and 8704 transitions. [2020-10-15 03:17:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 03:17:43,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:43,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:43,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:17:43,219 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:43,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:43,219 INFO L82 PathProgramCache]: Analyzing trace with hash 797351053, now seen corresponding path program 1 times [2020-10-15 03:17:43,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:43,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597231900] [2020-10-15 03:17:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:43,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:44,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:45,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:48,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:48,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 03:17:48,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:17:48,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:17:48,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:48,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:17:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:48,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:17:48,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:48,589 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:17:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:48,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:17:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:48,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:48,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:48,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597231900] [2020-10-15 03:17:48,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:48,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:17:48,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217216936] [2020-10-15 03:17:48,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:17:48,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:48,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:17:48,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:17:48,636 INFO L87 Difference]: Start difference. First operand 6018 states and 8704 transitions. Second operand 8 states. [2020-10-15 03:17:48,883 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 03:17:52,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:17:52,686 INFO L93 Difference]: Finished difference Result 18682 states and 26720 transitions. [2020-10-15 03:17:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:17:52,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-15 03:17:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:17:52,734 INFO L225 Difference]: With dead ends: 18682 [2020-10-15 03:17:52,735 INFO L226 Difference]: Without dead ends: 12916 [2020-10-15 03:17:52,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:17:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12916 states. [2020-10-15 03:17:54,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12916 to 7746. [2020-10-15 03:17:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7746 states. [2020-10-15 03:17:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 10744 transitions. [2020-10-15 03:17:54,603 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 10744 transitions. Word has length 75 [2020-10-15 03:17:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:17:54,604 INFO L479 AbstractCegarLoop]: Abstraction has 7746 states and 10744 transitions. [2020-10-15 03:17:54,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:17:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 10744 transitions. [2020-10-15 03:17:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-15 03:17:54,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:17:54,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:17:54,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:17:54,606 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:17:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:17:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash 23889940, now seen corresponding path program 1 times [2020-10-15 03:17:54,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:17:54,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462356807] [2020-10-15 03:17:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:17:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:54,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:54,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:55,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:57,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:59,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:59,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 03:17:59,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:17:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:17:59,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:59,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:17:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:17:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 03:17:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:59,924 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:17:59,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:17:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:17:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:17:59,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:17:59,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:17:59,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:17:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:17:59,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:17:59,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:17:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:17:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:17:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:17:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:17:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:17:59,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462356807] [2020-10-15 03:17:59,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:17:59,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:17:59,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693131594] [2020-10-15 03:17:59,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:17:59,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:17:59,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:17:59,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:17:59,974 INFO L87 Difference]: Start difference. First operand 7746 states and 10744 transitions. Second operand 6 states. [2020-10-15 03:18:00,302 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 03:18:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:04,363 INFO L93 Difference]: Finished difference Result 22572 states and 31512 transitions. [2020-10-15 03:18:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:04,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-15 03:18:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:04,395 INFO L225 Difference]: With dead ends: 22572 [2020-10-15 03:18:04,395 INFO L226 Difference]: Without dead ends: 14988 [2020-10-15 03:18:04,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:18:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14988 states. [2020-10-15 03:18:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14988 to 14986. [2020-10-15 03:18:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14986 states. [2020-10-15 03:18:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14986 states to 14986 states and 20803 transitions. [2020-10-15 03:18:08,373 INFO L78 Accepts]: Start accepts. Automaton has 14986 states and 20803 transitions. Word has length 76 [2020-10-15 03:18:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:08,374 INFO L479 AbstractCegarLoop]: Abstraction has 14986 states and 20803 transitions. [2020-10-15 03:18:08,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 14986 states and 20803 transitions. [2020-10-15 03:18:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 03:18:08,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:08,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:08,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:18:08,377 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:08,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1555802642, now seen corresponding path program 1 times [2020-10-15 03:18:08,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:08,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295253959] [2020-10-15 03:18:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:08,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:08,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:08,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 03:18:13,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:18:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:18:13,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:13,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:18:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:13,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 03:18:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:13,798 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:18:13,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:13,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:13,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:13,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:18:13,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:13,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:13,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295253959] [2020-10-15 03:18:13,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:13,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:18:13,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990760913] [2020-10-15 03:18:13,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:18:13,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:13,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:18:13,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:18:13,828 INFO L87 Difference]: Start difference. First operand 14986 states and 20803 transitions. Second operand 7 states. [2020-10-15 03:18:14,112 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-15 03:18:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:23,714 INFO L93 Difference]: Finished difference Result 50350 states and 69941 transitions. [2020-10-15 03:18:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:18:23,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-15 03:18:23,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:23,783 INFO L225 Difference]: With dead ends: 50350 [2020-10-15 03:18:23,783 INFO L226 Difference]: Without dead ends: 37086 [2020-10-15 03:18:23,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:18:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37086 states. [2020-10-15 03:18:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37086 to 14986. [2020-10-15 03:18:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14986 states. [2020-10-15 03:18:28,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14986 states to 14986 states and 20802 transitions. [2020-10-15 03:18:28,497 INFO L78 Accepts]: Start accepts. Automaton has 14986 states and 20802 transitions. Word has length 78 [2020-10-15 03:18:28,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:28,498 INFO L479 AbstractCegarLoop]: Abstraction has 14986 states and 20802 transitions. [2020-10-15 03:18:28,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:18:28,498 INFO L276 IsEmpty]: Start isEmpty. Operand 14986 states and 20802 transitions. [2020-10-15 03:18:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 03:18:28,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:28,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:28,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:18:28,505 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:28,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:28,506 INFO L82 PathProgramCache]: Analyzing trace with hash 404284699, now seen corresponding path program 1 times [2020-10-15 03:18:28,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:28,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129340876] [2020-10-15 03:18:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:28,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:28,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:28,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:28,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:30,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:33,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:33,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 03:18:33,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:18:33,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:18:33,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:33,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:18:33,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:18:33,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:18:33,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:33,807 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:18:33,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:33,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:33,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:33,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:33,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:33,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:18:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:33,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:18:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:33,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:18:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:33,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129340876] [2020-10-15 03:18:33,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:33,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:18:33,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398057042] [2020-10-15 03:18:33,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:18:33,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:33,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:18:33,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:18:33,839 INFO L87 Difference]: Start difference. First operand 14986 states and 20802 transitions. Second operand 8 states. [2020-10-15 03:18:34,148 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:18:41,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:41,528 INFO L93 Difference]: Finished difference Result 35368 states and 48952 transitions. [2020-10-15 03:18:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:18:41,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-15 03:18:41,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:41,583 INFO L225 Difference]: With dead ends: 35368 [2020-10-15 03:18:41,583 INFO L226 Difference]: Without dead ends: 25458 [2020-10-15 03:18:41,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:18:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25458 states. [2020-10-15 03:18:45,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25458 to 14986. [2020-10-15 03:18:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14986 states. [2020-10-15 03:18:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14986 states to 14986 states and 20798 transitions. [2020-10-15 03:18:45,430 INFO L78 Accepts]: Start accepts. Automaton has 14986 states and 20798 transitions. Word has length 78 [2020-10-15 03:18:45,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:45,431 INFO L479 AbstractCegarLoop]: Abstraction has 14986 states and 20798 transitions. [2020-10-15 03:18:45,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:18:45,431 INFO L276 IsEmpty]: Start isEmpty. Operand 14986 states and 20798 transitions. [2020-10-15 03:18:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:18:45,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:45,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:45,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 03:18:45,433 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:45,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:45,433 INFO L82 PathProgramCache]: Analyzing trace with hash -187605651, now seen corresponding path program 1 times [2020-10-15 03:18:45,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:45,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528340031] [2020-10-15 03:18:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:45,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:48,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:48,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:18:48,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:18:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2697 [2020-10-15 03:18:48,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:48,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:18:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:18:48,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 03:18:48,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:48,482 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:18:48,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:18:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:18:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:18:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:18:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:18:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:18:48,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:18:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:18:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:18:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:18:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:18:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:18:48,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528340031] [2020-10-15 03:18:48,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:18:48,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:18:48,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545180182] [2020-10-15 03:18:48,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:18:48,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:18:48,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:18:48,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:18:48,530 INFO L87 Difference]: Start difference. First operand 14986 states and 20798 transitions. Second operand 6 states. [2020-10-15 03:18:48,864 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 03:18:52,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:18:52,947 INFO L93 Difference]: Finished difference Result 29666 states and 41247 transitions. [2020-10-15 03:18:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:18:52,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-15 03:18:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:18:52,972 INFO L225 Difference]: With dead ends: 29666 [2020-10-15 03:18:52,972 INFO L226 Difference]: Without dead ends: 14901 [2020-10-15 03:18:52,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:18:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14901 states. [2020-10-15 03:18:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14901 to 9987. [2020-10-15 03:18:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2020-10-15 03:18:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 13800 transitions. [2020-10-15 03:18:55,714 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 13800 transitions. Word has length 80 [2020-10-15 03:18:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:18:55,714 INFO L479 AbstractCegarLoop]: Abstraction has 9987 states and 13800 transitions. [2020-10-15 03:18:55,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:18:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 13800 transitions. [2020-10-15 03:18:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-15 03:18:55,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:18:55,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:18:55,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 03:18:55,716 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:18:55,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:18:55,717 INFO L82 PathProgramCache]: Analyzing trace with hash -4381024, now seen corresponding path program 1 times [2020-10-15 03:18:55,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:18:55,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915953774] [2020-10-15 03:18:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:18:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:18:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:56,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:18:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:00,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:00,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-15 03:19:00,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:19:00,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:19:00,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:00,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:19:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:19:00,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:19:00,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:01,040 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:19:01,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:01,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:01,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:01,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:01,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:01,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:19:01,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:01,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:19:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:01,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:19:01,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:01,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915953774] [2020-10-15 03:19:01,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:01,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:19:01,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456625224] [2020-10-15 03:19:01,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:19:01,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:19:01,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:19:01,085 INFO L87 Difference]: Start difference. First operand 9987 states and 13800 transitions. Second operand 9 states. [2020-10-15 03:19:01,441 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-15 03:19:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:06,421 INFO L93 Difference]: Finished difference Result 23735 states and 32802 transitions. [2020-10-15 03:19:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:19:06,421 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-15 03:19:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:06,439 INFO L225 Difference]: With dead ends: 23735 [2020-10-15 03:19:06,439 INFO L226 Difference]: Without dead ends: 14851 [2020-10-15 03:19:06,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:19:06,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14851 states. [2020-10-15 03:19:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14851 to 9987. [2020-10-15 03:19:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2020-10-15 03:19:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 13799 transitions. [2020-10-15 03:19:09,234 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 13799 transitions. Word has length 80 [2020-10-15 03:19:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:09,234 INFO L479 AbstractCegarLoop]: Abstraction has 9987 states and 13799 transitions. [2020-10-15 03:19:09,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:19:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 13799 transitions. [2020-10-15 03:19:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 03:19:09,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:09,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:09,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 03:19:09,236 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:09,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1694978267, now seen corresponding path program 1 times [2020-10-15 03:19:09,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:09,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134615039] [2020-10-15 03:19:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:09,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:09,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:09,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:11,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:14,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:14,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-15 03:19:14,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:19:14,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:19:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:14,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:19:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:19:14,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:19:14,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:19:14,659 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:19:14,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:19:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:14,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:14,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:19:14,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:19:14,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:19:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:19:14,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:19:14,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:19:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:19:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:19:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:19:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:19:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:19:14,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134615039] [2020-10-15 03:19:14,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:19:14,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:19:14,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47493179] [2020-10-15 03:19:14,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:19:14,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:19:14,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:19:14,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:19:14,721 INFO L87 Difference]: Start difference. First operand 9987 states and 13799 transitions. Second operand 8 states. [2020-10-15 03:19:15,298 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:19:15,423 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-10-15 03:19:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:19:20,303 INFO L93 Difference]: Finished difference Result 24697 states and 34141 transitions. [2020-10-15 03:19:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:19:20,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-15 03:19:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:19:20,321 INFO L225 Difference]: With dead ends: 24697 [2020-10-15 03:19:20,321 INFO L226 Difference]: Without dead ends: 14871 [2020-10-15 03:19:20,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:19:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14871 states. [2020-10-15 03:19:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14871 to 9987. [2020-10-15 03:19:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9987 states. [2020-10-15 03:19:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 13797 transitions. [2020-10-15 03:19:23,137 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 13797 transitions. Word has length 82 [2020-10-15 03:19:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:19:23,137 INFO L479 AbstractCegarLoop]: Abstraction has 9987 states and 13797 transitions. [2020-10-15 03:19:23,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:19:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 13797 transitions. [2020-10-15 03:19:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-15 03:19:23,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:19:23,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:19:23,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 03:19:23,140 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:19:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:19:23,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1683394998, now seen corresponding path program 1 times [2020-10-15 03:19:23,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:19:23,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789333522] [2020-10-15 03:19:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:19:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:19:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:19:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking...