/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:46:38,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:46:38,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:46:38,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:46:38,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:46:38,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:46:38,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:46:38,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:46:38,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:46:38,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:46:38,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:46:38,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:46:38,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:46:38,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:46:38,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:46:38,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:46:38,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:46:38,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:46:38,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:46:38,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:46:38,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:46:38,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:46:38,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:46:38,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:46:38,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:46:38,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:46:38,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:46:38,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:46:38,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:46:38,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:46:38,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:46:38,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:46:38,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:46:38,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:46:38,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:46:38,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:46:38,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:46:38,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:46:38,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:46:38,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:46:38,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:46:38,620 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 [2020-10-29 13:46:38,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:46:38,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:46:38,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:46:38,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:46:38,674 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:46:38,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:46:38,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:46:38,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:46:38,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:46:38,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:46:38,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:46:38,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:46:38,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:46:38,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:46:38,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:46:38,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:46:38,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:46:38,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:46:38,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:46:38,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:46:38,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:46:38,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:46:38,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:46:38,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:46:38,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:46:38,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:46:38,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:46:38,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:46:38,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:46:38,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:46:39,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:46:39,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:46:39,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:46:39,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:46:39,105 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:46:39,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:46:39,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b4583387/39145121e647489f9a8385e07cce36ab/FLAG48d9465eb [2020-10-29 13:46:39,987 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:46:39,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:46:40,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b4583387/39145121e647489f9a8385e07cce36ab/FLAG48d9465eb [2020-10-29 13:46:40,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b4583387/39145121e647489f9a8385e07cce36ab [2020-10-29 13:46:40,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:46:40,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:46:40,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:46:40,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:46:40,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:46:40,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:40,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc505c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40, skipping insertion in model container [2020-10-29 13:46:40,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:40,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:46:40,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:46:40,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:46:40,731 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:46:40,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:46:40,921 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:46:40,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40 WrapperNode [2020-10-29 13:46:40,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:46:40,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:46:40,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:46:40,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:46:40,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:40,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:40,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:40,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:40,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:40,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:41,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (1/1) ... [2020-10-29 13:46:41,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:46:41,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:46:41,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:46:41,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:46:41,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (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 [2020-10-29 13:46:41,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:46:41,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:46:41,133 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:46:41,133 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:46:41,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:46:41,133 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:46:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:46:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:46:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:46:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:46:41,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:46:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:46:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:46:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:46:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:46:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:46:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:46:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:46:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:46:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:46:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:46:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:46:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:46:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:46:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:46:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:46:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:46:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:46:42,569 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:46:42,569 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:46:42,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:46:42 BoogieIcfgContainer [2020-10-29 13:46:42,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:46:42,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:46:42,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:46:42,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:46:42,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:46:40" (1/3) ... [2020-10-29 13:46:42,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fff60a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:46:42, skipping insertion in model container [2020-10-29 13:46:42,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:46:40" (2/3) ... [2020-10-29 13:46:42,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fff60a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:46:42, skipping insertion in model container [2020-10-29 13:46:42,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:46:42" (3/3) ... [2020-10-29 13:46:42,583 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-29 13:46:42,596 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:46:42,604 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:46:42,618 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:46:42,664 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:46:42,665 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:46:42,667 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:46:42,667 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:46:42,667 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:46:42,667 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:46:42,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:46:42,668 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:46:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-10-29 13:46:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 13:46:42,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:46:42,718 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] [2020-10-29 13:46:42,719 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:46:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:46:42,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1467259885, now seen corresponding path program 1 times [2020-10-29 13:46:42,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:46:42,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173790012] [2020-10-29 13:46:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:46:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:43,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:46,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:46,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 13:46:46,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:46:46,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-29 13:46:46,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:46,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:46:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:46:46,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:46:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:46:46,834 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:46:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:46:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:46,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:46,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:46:46,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:46:46,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:46:46,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:46,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:46:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:46:46,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:46:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:46:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:46:46,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173790012] [2020-10-29 13:46:46,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:46:46,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:46:46,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833193941] [2020-10-29 13:46:46,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:46:46,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:46:46,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:46:46,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:46:46,946 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 7 states. [2020-10-29 13:46:47,550 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 13:46:48,808 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:46:49,096 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 13:46:49,362 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:46:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:46:49,792 INFO L93 Difference]: Finished difference Result 659 states and 1060 transitions. [2020-10-29 13:46:49,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:46:49,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-29 13:46:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:46:49,814 INFO L225 Difference]: With dead ends: 659 [2020-10-29 13:46:49,814 INFO L226 Difference]: Without dead ends: 550 [2020-10-29 13:46:49,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:46:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-29 13:46:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 280. [2020-10-29 13:46:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-29 13:46:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 417 transitions. [2020-10-29 13:46:49,928 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 417 transitions. Word has length 70 [2020-10-29 13:46:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:46:49,930 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 417 transitions. [2020-10-29 13:46:49,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:46:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 417 transitions. [2020-10-29 13:46:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 13:46:49,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:46:49,939 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] [2020-10-29 13:46:49,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:46:49,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:46:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:46:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1758415377, now seen corresponding path program 1 times [2020-10-29 13:46:49,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:46:49,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361594824] [2020-10-29 13:46:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:46:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:50,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:51,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:51,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 13:46:51,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:46:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-10-29 13:46:51,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:51,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:46:51,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:46:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 13:46:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 13:46:51,437 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:46:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:46:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:51,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:51,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:46:51,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:46:51,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:46:51,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:51,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:46:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:46:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:46:51,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:46:51,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:46:51,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361594824] [2020-10-29 13:46:51,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:46:51,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:46:51,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617572301] [2020-10-29 13:46:51,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:46:51,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:46:51,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:46:51,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:46:51,511 INFO L87 Difference]: Start difference. First operand 280 states and 417 transitions. Second operand 7 states. [2020-10-29 13:46:52,721 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 13:46:53,015 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-29 13:46:53,276 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:46:53,534 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:46:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:46:54,615 INFO L93 Difference]: Finished difference Result 1022 states and 1565 transitions. [2020-10-29 13:46:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:46:54,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-29 13:46:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:46:54,622 INFO L225 Difference]: With dead ends: 1022 [2020-10-29 13:46:54,622 INFO L226 Difference]: Without dead ends: 809 [2020-10-29 13:46:54,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:46:54,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-29 13:46:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 800. [2020-10-29 13:46:54,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2020-10-29 13:46:54,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1216 transitions. [2020-10-29 13:46:54,697 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1216 transitions. Word has length 71 [2020-10-29 13:46:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:46:54,697 INFO L481 AbstractCegarLoop]: Abstraction has 800 states and 1216 transitions. [2020-10-29 13:46:54,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:46:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1216 transitions. [2020-10-29 13:46:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:46:54,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:46:54,701 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] [2020-10-29 13:46:54,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:46:54,701 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:46:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:46:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1005210797, now seen corresponding path program 1 times [2020-10-29 13:46:54,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:46:54,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102662544] [2020-10-29 13:46:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:46:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:54,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:54,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:55,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:55,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:46:55,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:46:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-29 13:46:55,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:55,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:46:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:46:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 13:46:55,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:46:55,745 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:46:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:46:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:55,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:55,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:46:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:46:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 13:46:55,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:55,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:46:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:46:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:46:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:46:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:46:55,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102662544] [2020-10-29 13:46:55,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:46:55,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:46:55,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662461521] [2020-10-29 13:46:55,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:46:55,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:46:55,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:46:55,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:46:55,839 INFO L87 Difference]: Start difference. First operand 800 states and 1216 transitions. Second operand 6 states. [2020-10-29 13:46:56,122 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:46:56,851 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:46:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:46:57,369 INFO L93 Difference]: Finished difference Result 2167 states and 3332 transitions. [2020-10-29 13:46:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:46:57,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-29 13:46:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:46:57,378 INFO L225 Difference]: With dead ends: 2167 [2020-10-29 13:46:57,379 INFO L226 Difference]: Without dead ends: 1406 [2020-10-29 13:46:57,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:46:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2020-10-29 13:46:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1403. [2020-10-29 13:46:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-10-29 13:46:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2141 transitions. [2020-10-29 13:46:57,515 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2141 transitions. Word has length 72 [2020-10-29 13:46:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:46:57,515 INFO L481 AbstractCegarLoop]: Abstraction has 1403 states and 2141 transitions. [2020-10-29 13:46:57,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:46:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2141 transitions. [2020-10-29 13:46:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:46:57,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:46:57,521 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] [2020-10-29 13:46:57,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:46:57,526 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:46:57,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:46:57,527 INFO L82 PathProgramCache]: Analyzing trace with hash 752013308, now seen corresponding path program 1 times [2020-10-29 13:46:57,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:46:57,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872302379] [2020-10-29 13:46:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:46:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:58,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:58,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:46:58,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:46:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-29 13:46:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:58,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:46:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:46:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 13:46:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:46:58,503 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:46:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:46:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:46:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:46:58,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:46:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:46:58,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:46:58,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:46:58,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:46:58,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:46:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:46:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:46:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:46:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:46:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:46:58,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872302379] [2020-10-29 13:46:58,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:46:58,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:46:58,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010237923] [2020-10-29 13:46:58,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:46:58,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:46:58,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:46:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:46:58,576 INFO L87 Difference]: Start difference. First operand 1403 states and 2141 transitions. Second operand 6 states. [2020-10-29 13:46:58,847 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:46:59,561 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:47:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:00,157 INFO L93 Difference]: Finished difference Result 3894 states and 5976 transitions. [2020-10-29 13:47:00,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:47:00,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-29 13:47:00,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:00,172 INFO L225 Difference]: With dead ends: 3894 [2020-10-29 13:47:00,172 INFO L226 Difference]: Without dead ends: 2546 [2020-10-29 13:47:00,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:47:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2020-10-29 13:47:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2543. [2020-10-29 13:47:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2543 states. [2020-10-29 13:47:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3870 transitions. [2020-10-29 13:47:00,351 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3870 transitions. Word has length 72 [2020-10-29 13:47:00,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:00,351 INFO L481 AbstractCegarLoop]: Abstraction has 2543 states and 3870 transitions. [2020-10-29 13:47:00,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:47:00,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3870 transitions. [2020-10-29 13:47:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:47:00,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:00,354 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] [2020-10-29 13:47:00,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:47:00,354 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:00,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:00,355 INFO L82 PathProgramCache]: Analyzing trace with hash 847147674, now seen corresponding path program 1 times [2020-10-29 13:47:00,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:00,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102181765] [2020-10-29 13:47:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:00,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:00,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:47:00,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:47:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-29 13:47:00,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:00,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:47:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:47:00,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 13:47:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:01,257 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:01,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:01,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:01,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:01,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:47:01,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:01,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:47:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:01,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:47:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:01,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:01,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102181765] [2020-10-29 13:47:01,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:01,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:47:01,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611182540] [2020-10-29 13:47:01,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:47:01,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:01,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:47:01,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:47:01,320 INFO L87 Difference]: Start difference. First operand 2543 states and 3870 transitions. Second operand 6 states. [2020-10-29 13:47:01,637 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:47:02,347 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:47:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:03,107 INFO L93 Difference]: Finished difference Result 7009 states and 10700 transitions. [2020-10-29 13:47:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:47:03,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-29 13:47:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:03,132 INFO L225 Difference]: With dead ends: 7009 [2020-10-29 13:47:03,132 INFO L226 Difference]: Without dead ends: 4571 [2020-10-29 13:47:03,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:47:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2020-10-29 13:47:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 4568. [2020-10-29 13:47:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4568 states. [2020-10-29 13:47:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 6923 transitions. [2020-10-29 13:47:03,456 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 6923 transitions. Word has length 72 [2020-10-29 13:47:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:03,457 INFO L481 AbstractCegarLoop]: Abstraction has 4568 states and 6923 transitions. [2020-10-29 13:47:03,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:47:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 6923 transitions. [2020-10-29 13:47:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 13:47:03,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:03,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:47:03,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:47:03,460 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:03,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:03,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1307130037, now seen corresponding path program 1 times [2020-10-29 13:47:03,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:03,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919222921] [2020-10-29 13:47:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:03,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:04,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:04,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 13:47:04,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:47:04,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-29 13:47:04,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:04,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:47:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:47:04,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 13:47:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:04,586 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:04,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:04,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:04,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:04,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:04,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:47:04,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:04,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:47:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:04,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:47:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:04,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919222921] [2020-10-29 13:47:04,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:04,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:47:04,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548891412] [2020-10-29 13:47:04,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:47:04,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:04,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:47:04,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:47:04,650 INFO L87 Difference]: Start difference. First operand 4568 states and 6923 transitions. Second operand 6 states. [2020-10-29 13:47:04,928 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:47:05,707 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:47:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:06,627 INFO L93 Difference]: Finished difference Result 13182 states and 19984 transitions. [2020-10-29 13:47:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:47:06,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-29 13:47:06,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:06,673 INFO L225 Difference]: With dead ends: 13182 [2020-10-29 13:47:06,673 INFO L226 Difference]: Without dead ends: 8692 [2020-10-29 13:47:06,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:47:06,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2020-10-29 13:47:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 8689. [2020-10-29 13:47:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8689 states. [2020-10-29 13:47:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 13069 transitions. [2020-10-29 13:47:07,438 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 13069 transitions. Word has length 72 [2020-10-29 13:47:07,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:07,439 INFO L481 AbstractCegarLoop]: Abstraction has 8689 states and 13069 transitions. [2020-10-29 13:47:07,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:47:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 13069 transitions. [2020-10-29 13:47:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:47:07,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:07,450 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] [2020-10-29 13:47:07,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:47:07,450 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:07,451 INFO L82 PathProgramCache]: Analyzing trace with hash -832685114, now seen corresponding path program 1 times [2020-10-29 13:47:07,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:07,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695186541] [2020-10-29 13:47:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:07,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:07,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:10,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:10,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:47:10,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:47:10,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2537 [2020-10-29 13:47:10,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:10,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:47:10,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:47:10,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:47:10,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:10,511 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:10,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:10,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:10,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:10,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:47:10,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:10,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:47:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:47:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:10,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695186541] [2020-10-29 13:47:10,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:10,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:47:10,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11464728] [2020-10-29 13:47:10,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:47:10,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:10,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:47:10,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:47:10,561 INFO L87 Difference]: Start difference. First operand 8689 states and 13069 transitions. Second operand 9 states. [2020-10-29 13:47:10,908 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 13:47:12,753 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:47:13,039 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 13:47:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:17,104 INFO L93 Difference]: Finished difference Result 47231 states and 70931 transitions. [2020-10-29 13:47:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:47:17,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-29 13:47:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:17,247 INFO L225 Difference]: With dead ends: 47231 [2020-10-29 13:47:17,247 INFO L226 Difference]: Without dead ends: 39029 [2020-10-29 13:47:17,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:47:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39029 states. [2020-10-29 13:47:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39029 to 8728. [2020-10-29 13:47:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8728 states. [2020-10-29 13:47:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8728 states to 8728 states and 13105 transitions. [2020-10-29 13:47:19,036 INFO L78 Accepts]: Start accepts. Automaton has 8728 states and 13105 transitions. Word has length 73 [2020-10-29 13:47:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:19,037 INFO L481 AbstractCegarLoop]: Abstraction has 8728 states and 13105 transitions. [2020-10-29 13:47:19,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:47:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 8728 states and 13105 transitions. [2020-10-29 13:47:19,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:47:19,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:19,041 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] [2020-10-29 13:47:19,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:47:19,041 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:19,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1116207066, now seen corresponding path program 1 times [2020-10-29 13:47:19,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:19,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803845734] [2020-10-29 13:47:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:19,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:19,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:21,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:21,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:47:21,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:47:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-10-29 13:47:21,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:21,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:47:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:47:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:47:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:21,552 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-29 13:47:21,828 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:21,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:21,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:21,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:47:21,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:21,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:47:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:47:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:47:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:21,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803845734] [2020-10-29 13:47:21,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:21,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:47:21,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824282888] [2020-10-29 13:47:21,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:47:21,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:21,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:47:21,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:47:21,890 INFO L87 Difference]: Start difference. First operand 8728 states and 13105 transitions. Second operand 9 states. [2020-10-29 13:47:22,231 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 13:47:24,122 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:47:24,442 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 13:47:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:29,723 INFO L93 Difference]: Finished difference Result 46181 states and 69365 transitions. [2020-10-29 13:47:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:47:29,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-29 13:47:29,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:29,808 INFO L225 Difference]: With dead ends: 46181 [2020-10-29 13:47:29,808 INFO L226 Difference]: Without dead ends: 39797 [2020-10-29 13:47:29,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:47:29,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39797 states. [2020-10-29 13:47:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39797 to 8921. [2020-10-29 13:47:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8921 states. [2020-10-29 13:47:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 13349 transitions. [2020-10-29 13:47:31,068 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 13349 transitions. Word has length 73 [2020-10-29 13:47:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:31,068 INFO L481 AbstractCegarLoop]: Abstraction has 8921 states and 13349 transitions. [2020-10-29 13:47:31,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:47:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 13349 transitions. [2020-10-29 13:47:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:47:31,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:31,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:47:31,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:47:31,072 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:31,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:31,073 INFO L82 PathProgramCache]: Analyzing trace with hash -622927642, now seen corresponding path program 1 times [2020-10-29 13:47:31,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:31,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085720857] [2020-10-29 13:47:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:31,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:32,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:32,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:47:32,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:47:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1860 [2020-10-29 13:47:32,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:32,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:47:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:47:32,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:47:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:33,462 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:33,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:33,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:33,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:33,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:33,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:33,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:47:33,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:33,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:47:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:33,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:47:33,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:33,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085720857] [2020-10-29 13:47:33,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:33,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:47:33,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342557935] [2020-10-29 13:47:33,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:47:33,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:33,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:47:33,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:47:33,515 INFO L87 Difference]: Start difference. First operand 8921 states and 13349 transitions. Second operand 9 states. [2020-10-29 13:47:33,848 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 13:47:35,644 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:47:35,968 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 13:47:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:41,810 INFO L93 Difference]: Finished difference Result 39634 states and 59490 transitions. [2020-10-29 13:47:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 13:47:41,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-29 13:47:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:41,906 INFO L225 Difference]: With dead ends: 39634 [2020-10-29 13:47:41,906 INFO L226 Difference]: Without dead ends: 37273 [2020-10-29 13:47:41,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-29 13:47:41,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37273 states. [2020-10-29 13:47:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37273 to 8921. [2020-10-29 13:47:43,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8921 states. [2020-10-29 13:47:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 13345 transitions. [2020-10-29 13:47:43,332 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 13345 transitions. Word has length 73 [2020-10-29 13:47:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:43,332 INFO L481 AbstractCegarLoop]: Abstraction has 8921 states and 13345 transitions. [2020-10-29 13:47:43,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:47:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 13345 transitions. [2020-10-29 13:47:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 13:47:43,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:43,336 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] [2020-10-29 13:47:43,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:47:43,337 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:43,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:43,337 INFO L82 PathProgramCache]: Analyzing trace with hash 85300358, now seen corresponding path program 1 times [2020-10-29 13:47:43,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:43,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563749536] [2020-10-29 13:47:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:44,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:44,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 13:47:44,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:47:44,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-29 13:47:44,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:44,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:47:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:47:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:47:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:44,784 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-10-29 13:47:45,110 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:45,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:45,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:45,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:47:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:45,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:47:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:47:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:45,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563749536] [2020-10-29 13:47:45,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:45,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:47:45,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177623013] [2020-10-29 13:47:45,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:47:45,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:45,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:47:45,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:47:45,157 INFO L87 Difference]: Start difference. First operand 8921 states and 13345 transitions. Second operand 9 states. [2020-10-29 13:47:45,468 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 13:47:47,362 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 13:47:47,683 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 13:47:54,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:54,400 INFO L93 Difference]: Finished difference Result 44748 states and 67176 transitions. [2020-10-29 13:47:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:47:54,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-10-29 13:47:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:54,470 INFO L225 Difference]: With dead ends: 44748 [2020-10-29 13:47:54,470 INFO L226 Difference]: Without dead ends: 40379 [2020-10-29 13:47:54,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:47:54,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40379 states. [2020-10-29 13:47:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40379 to 9209. [2020-10-29 13:47:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9209 states. [2020-10-29 13:47:56,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9209 states to 9209 states and 13715 transitions. [2020-10-29 13:47:56,111 INFO L78 Accepts]: Start accepts. Automaton has 9209 states and 13715 transitions. Word has length 73 [2020-10-29 13:47:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:47:56,111 INFO L481 AbstractCegarLoop]: Abstraction has 9209 states and 13715 transitions. [2020-10-29 13:47:56,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:47:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 9209 states and 13715 transitions. [2020-10-29 13:47:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:47:56,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:47:56,116 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] [2020-10-29 13:47:56,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:47:56,117 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:47:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:47:56,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1372668506, now seen corresponding path program 1 times [2020-10-29 13:47:56,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:47:56,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097662710] [2020-10-29 13:47:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:47:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:56,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:56,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:47:56,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:56,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 13:47:56,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:56,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:47:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 13:47:56,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:47:56,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:56,590 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:47:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:47:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:47:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:47:56,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:47:56,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:47:56,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:47:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:47:56,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:47:56,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:47:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:47:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:47:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:47:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:47:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:47:56,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097662710] [2020-10-29 13:47:56,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:47:56,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:47:56,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858966729] [2020-10-29 13:47:56,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:47:56,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:47:56,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:47:56,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:47:56,628 INFO L87 Difference]: Start difference. First operand 9209 states and 13715 transitions. Second operand 5 states. [2020-10-29 13:47:59,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:47:59,854 INFO L93 Difference]: Finished difference Result 17436 states and 26037 transitions. [2020-10-29 13:47:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:47:59,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 13:47:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:47:59,882 INFO L225 Difference]: With dead ends: 17436 [2020-10-29 13:47:59,882 INFO L226 Difference]: Without dead ends: 17433 [2020-10-29 13:47:59,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:47:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17433 states. [2020-10-29 13:48:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17433 to 9465. [2020-10-29 13:48:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9465 states. [2020-10-29 13:48:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9465 states to 9465 states and 13971 transitions. [2020-10-29 13:48:01,669 INFO L78 Accepts]: Start accepts. Automaton has 9465 states and 13971 transitions. Word has length 74 [2020-10-29 13:48:01,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:01,669 INFO L481 AbstractCegarLoop]: Abstraction has 9465 states and 13971 transitions. [2020-10-29 13:48:01,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:48:01,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9465 states and 13971 transitions. [2020-10-29 13:48:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:48:01,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:01,674 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] [2020-10-29 13:48:01,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:48:01,674 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1007369326, now seen corresponding path program 1 times [2020-10-29 13:48:01,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:01,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212102548] [2020-10-29 13:48:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:03,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:03,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:48:03,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:48:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-29 13:48:03,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:03,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:48:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:48:03,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:48:03,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:03,884 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:48:03,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:03,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:03,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:03,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:48:03,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:03,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:03,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212102548] [2020-10-29 13:48:03,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:03,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:48:03,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263064548] [2020-10-29 13:48:03,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:48:03,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:03,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:48:03,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:48:03,956 INFO L87 Difference]: Start difference. First operand 9465 states and 13971 transitions. Second operand 7 states. [2020-10-29 13:48:04,292 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:48:05,356 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:48:05,617 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 13:48:05,976 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 13:48:06,253 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:48:06,540 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:48:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:10,272 INFO L93 Difference]: Finished difference Result 27417 states and 41033 transitions. [2020-10-29 13:48:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:48:10,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-10-29 13:48:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:10,298 INFO L225 Difference]: With dead ends: 27417 [2020-10-29 13:48:10,299 INFO L226 Difference]: Without dead ends: 23302 [2020-10-29 13:48:10,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:48:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23302 states. [2020-10-29 13:48:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23302 to 16646. [2020-10-29 13:48:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16646 states. [2020-10-29 13:48:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16646 states to 16646 states and 24707 transitions. [2020-10-29 13:48:13,212 INFO L78 Accepts]: Start accepts. Automaton has 16646 states and 24707 transitions. Word has length 75 [2020-10-29 13:48:13,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:13,212 INFO L481 AbstractCegarLoop]: Abstraction has 16646 states and 24707 transitions. [2020-10-29 13:48:13,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:48:13,212 INFO L276 IsEmpty]: Start isEmpty. Operand 16646 states and 24707 transitions. [2020-10-29 13:48:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:48:13,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:13,219 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] [2020-10-29 13:48:13,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:48:13,219 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:13,220 INFO L82 PathProgramCache]: Analyzing trace with hash 379549431, now seen corresponding path program 1 times [2020-10-29 13:48:13,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:13,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522347078] [2020-10-29 13:48:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:13,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:13,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:48:13,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:13,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 13:48:13,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:13,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:48:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:48:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 13:48:13,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:13,797 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:48:13,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:13,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:13,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:13,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:13,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:13,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:48:13,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:13,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:13,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522347078] [2020-10-29 13:48:13,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:13,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:48:13,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542503013] [2020-10-29 13:48:13,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:48:13,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:13,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:48:13,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:48:13,842 INFO L87 Difference]: Start difference. First operand 16646 states and 24707 transitions. Second operand 5 states. [2020-10-29 13:48:14,119 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 13:48:15,060 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:48:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:20,305 INFO L93 Difference]: Finished difference Result 43932 states and 65207 transitions. [2020-10-29 13:48:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:48:20,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-29 13:48:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:20,344 INFO L225 Difference]: With dead ends: 43932 [2020-10-29 13:48:20,344 INFO L226 Difference]: Without dead ends: 28633 [2020-10-29 13:48:20,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:48:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28633 states. [2020-10-29 13:48:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28633 to 28630. [2020-10-29 13:48:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28630 states. [2020-10-29 13:48:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28630 states to 28630 states and 42131 transitions. [2020-10-29 13:48:25,649 INFO L78 Accepts]: Start accepts. Automaton has 28630 states and 42131 transitions. Word has length 75 [2020-10-29 13:48:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:25,649 INFO L481 AbstractCegarLoop]: Abstraction has 28630 states and 42131 transitions. [2020-10-29 13:48:25,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:48:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand 28630 states and 42131 transitions. [2020-10-29 13:48:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:48:25,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:25,655 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] [2020-10-29 13:48:25,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:48:25,655 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash -610011700, now seen corresponding path program 1 times [2020-10-29 13:48:25,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:25,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30778791] [2020-10-29 13:48:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:27,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:27,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:48:27,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:48:27,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2008 [2020-10-29 13:48:27,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:27,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:27,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:48:27,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:48:27,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:48:27,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:28,002 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:48:28,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:28,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:28,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:48:28,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:28,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:28,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30778791] [2020-10-29 13:48:28,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:28,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:48:28,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440012398] [2020-10-29 13:48:28,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:48:28,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:28,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:48:28,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:48:28,040 INFO L87 Difference]: Start difference. First operand 28630 states and 42131 transitions. Second operand 7 states. [2020-10-29 13:48:28,350 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:48:29,408 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 13:48:29,768 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:48:36,682 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:48:36,974 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:48:37,318 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 13:48:39,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:48:39,462 INFO L93 Difference]: Finished difference Result 55691 states and 81973 transitions. [2020-10-29 13:48:39,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:48:39,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-10-29 13:48:39,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:48:39,521 INFO L225 Difference]: With dead ends: 55691 [2020-10-29 13:48:39,521 INFO L226 Difference]: Without dead ends: 47432 [2020-10-29 13:48:39,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:48:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47432 states. [2020-10-29 13:48:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47432 to 32899. [2020-10-29 13:48:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32899 states. [2020-10-29 13:48:45,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32899 states to 32899 states and 48399 transitions. [2020-10-29 13:48:45,832 INFO L78 Accepts]: Start accepts. Automaton has 32899 states and 48399 transitions. Word has length 75 [2020-10-29 13:48:45,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:48:45,832 INFO L481 AbstractCegarLoop]: Abstraction has 32899 states and 48399 transitions. [2020-10-29 13:48:45,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:48:45,832 INFO L276 IsEmpty]: Start isEmpty. Operand 32899 states and 48399 transitions. [2020-10-29 13:48:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:48:45,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:48:45,837 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] [2020-10-29 13:48:45,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:48:45,838 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:48:45,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:48:45,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1751410100, now seen corresponding path program 1 times [2020-10-29 13:48:45,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:48:45,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934984568] [2020-10-29 13:48:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:48:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:45,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:47,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:47,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:48:47,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:48:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1709 [2020-10-29 13:48:47,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:47,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:48:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 13:48:47,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:48:47,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:47,992 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:48:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:48:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:48:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:48:48,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:48:48,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:48:48,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:48:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:48:48,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:48:48,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:48:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:48:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:48:48,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:48:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:48:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:48:48,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934984568] [2020-10-29 13:48:48,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:48:48,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:48:48,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082324035] [2020-10-29 13:48:48,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:48:48,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:48:48,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:48:48,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:48:48,032 INFO L87 Difference]: Start difference. First operand 32899 states and 48399 transitions. Second operand 7 states. [2020-10-29 13:48:48,345 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:48:49,392 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 13:48:49,799 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:48:57,978 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:48:58,389 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:48:58,706 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 13:49:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:01,583 INFO L93 Difference]: Finished difference Result 66420 states and 97853 transitions. [2020-10-29 13:49:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:49:01,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-10-29 13:49:01,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:01,661 INFO L225 Difference]: With dead ends: 66420 [2020-10-29 13:49:01,662 INFO L226 Difference]: Without dead ends: 54825 [2020-10-29 13:49:01,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:49:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54825 states. [2020-10-29 13:49:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54825 to 36452. [2020-10-29 13:49:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36452 states. [2020-10-29 13:49:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36452 states to 36452 states and 53603 transitions. [2020-10-29 13:49:08,919 INFO L78 Accepts]: Start accepts. Automaton has 36452 states and 53603 transitions. Word has length 75 [2020-10-29 13:49:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:08,920 INFO L481 AbstractCegarLoop]: Abstraction has 36452 states and 53603 transitions. [2020-10-29 13:49:08,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:49:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 36452 states and 53603 transitions. [2020-10-29 13:49:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:49:08,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:08,925 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] [2020-10-29 13:49:08,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:49:08,925 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:08,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1571100434, now seen corresponding path program 1 times [2020-10-29 13:49:08,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:08,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107589792] [2020-10-29 13:49:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:08,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:08,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:11,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:11,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:49:11,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:49:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2194 [2020-10-29 13:49:11,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:11,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:49:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:49:11,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:49:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:11,438 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:49:11,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:11,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:11,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:11,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:49:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:11,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:49:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:49:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:11,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107589792] [2020-10-29 13:49:11,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:11,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:49:11,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342158137] [2020-10-29 13:49:11,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:49:11,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:11,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:49:11,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:49:11,473 INFO L87 Difference]: Start difference. First operand 36452 states and 53603 transitions. Second operand 7 states. [2020-10-29 13:49:11,797 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:49:12,941 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:49:13,244 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 13:49:21,533 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 13:49:21,890 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:49:22,164 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 13:49:25,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:25,199 INFO L93 Difference]: Finished difference Result 60448 states and 88701 transitions. [2020-10-29 13:49:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 13:49:25,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-10-29 13:49:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:25,275 INFO L225 Difference]: With dead ends: 60448 [2020-10-29 13:49:25,275 INFO L226 Difference]: Without dead ends: 56141 [2020-10-29 13:49:25,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:49:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56141 states. [2020-10-29 13:49:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56141 to 38651. [2020-10-29 13:49:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38651 states. [2020-10-29 13:49:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38651 states to 38651 states and 56810 transitions. [2020-10-29 13:49:33,088 INFO L78 Accepts]: Start accepts. Automaton has 38651 states and 56810 transitions. Word has length 75 [2020-10-29 13:49:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:33,088 INFO L481 AbstractCegarLoop]: Abstraction has 38651 states and 56810 transitions. [2020-10-29 13:49:33,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:49:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 38651 states and 56810 transitions. [2020-10-29 13:49:33,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 13:49:33,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:33,093 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] [2020-10-29 13:49:33,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:49:33,093 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:33,094 INFO L82 PathProgramCache]: Analyzing trace with hash -2075244480, now seen corresponding path program 1 times [2020-10-29 13:49:33,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:33,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988416248] [2020-10-29 13:49:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:33,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:33,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:38,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:38,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 13:49:38,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:49:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:49:38,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:38,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:49:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:49:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:49:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:38,453 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 13:49:38,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:38,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:38,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:38,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:38,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:38,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:49:38,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:38,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:49:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:49:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:49:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:38,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988416248] [2020-10-29 13:49:38,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:38,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:49:38,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469071496] [2020-10-29 13:49:38,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:49:38,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:38,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:49:38,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:49:38,521 INFO L87 Difference]: Start difference. First operand 38651 states and 56810 transitions. Second operand 8 states. [2020-10-29 13:49:38,812 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 13:49:40,111 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 13:49:50,526 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 13:50:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:08,710 INFO L93 Difference]: Finished difference Result 170302 states and 248537 transitions. [2020-10-29 13:50:08,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:50:08,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-10-29 13:50:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:08,932 INFO L225 Difference]: With dead ends: 170302 [2020-10-29 13:50:08,932 INFO L226 Difference]: Without dead ends: 132350 [2020-10-29 13:50:08,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:50:09,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132350 states. [2020-10-29 13:50:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132350 to 38404. [2020-10-29 13:50:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38404 states. [2020-10-29 13:50:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38404 states to 38404 states and 56267 transitions. [2020-10-29 13:50:17,788 INFO L78 Accepts]: Start accepts. Automaton has 38404 states and 56267 transitions. Word has length 78 [2020-10-29 13:50:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:17,788 INFO L481 AbstractCegarLoop]: Abstraction has 38404 states and 56267 transitions. [2020-10-29 13:50:17,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:50:17,788 INFO L276 IsEmpty]: Start isEmpty. Operand 38404 states and 56267 transitions. [2020-10-29 13:50:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 13:50:17,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:17,792 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] [2020-10-29 13:50:17,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:50:17,792 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:17,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1460146818, now seen corresponding path program 1 times [2020-10-29 13:50:17,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:17,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339223687] [2020-10-29 13:50:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:17,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking...