/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_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:08:38,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:08:38,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:08:38,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:08:38,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:08:38,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:08:38,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:08:38,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:08:38,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:08:38,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:08:38,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:08:38,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:08:38,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:08:38,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:08:38,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:08:38,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:08:38,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:08:38,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:08:38,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:08:38,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:08:38,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:08:38,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:08:38,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:08:38,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:08:38,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:08:38,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:08:38,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:08:38,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:08:38,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:08:38,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:08:38,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:08:38,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:08:38,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:08:38,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:08:38,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:08:38,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:08:38,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:08:38,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:08:38,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:08:38,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:08:38,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:08:38,619 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 13:08:38,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:08:38,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:08:38,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:08:38,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:08:38,670 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:08:38,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:08:38,670 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:08:38,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:08:38,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:08:38,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:08:38,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:08:38,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:08:38,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:08:38,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:08:38,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:08:38,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:08:38,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:08:38,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:08:38,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:08:38,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:08:38,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:08:38,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:08:38,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:08:38,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:08:38,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:08:38,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:08:38,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:08:38,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:08:38,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:08:38,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:08:39,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:08:39,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:08:39,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:08:39,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:08:39,157 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:08:39,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:08:39,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8025e2011/09fde08ba89e4f74b72bbd0ed22676ae/FLAGdaa9f3523 [2020-10-29 13:08:40,129 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:08:40,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:08:40,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8025e2011/09fde08ba89e4f74b72bbd0ed22676ae/FLAGdaa9f3523 [2020-10-29 13:08:40,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8025e2011/09fde08ba89e4f74b72bbd0ed22676ae [2020-10-29 13:08:40,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:08:40,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:08:40,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:08:40,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:08:40,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:08:40,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:08:40" (1/1) ... [2020-10-29 13:08:40,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198f060f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:40, skipping insertion in model container [2020-10-29 13:08:40,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:08:40" (1/1) ... [2020-10-29 13:08:40,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:08:40,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:08:41,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:08:41,069 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:08:41,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:08:41,419 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:08:41,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41 WrapperNode [2020-10-29 13:08:41,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:08:41,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:08:41,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:08:41,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:08:41,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (1/1) ... [2020-10-29 13:08:41,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (1/1) ... [2020-10-29 13:08:41,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (1/1) ... [2020-10-29 13:08:41,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (1/1) ... [2020-10-29 13:08:41,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (1/1) ... [2020-10-29 13:08:41,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (1/1) ... [2020-10-29 13:08:41,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (1/1) ... [2020-10-29 13:08:41,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:08:41,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:08:41,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:08:41,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:08:41,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (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 13:08:41,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:08:41,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:08:41,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:08:41,729 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:08:41,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:08:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:08:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:08:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:08:41,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:08:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:08:41,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:08:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:08:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:08:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:08:41,732 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:08:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:08:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:08:41,733 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:08:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:08:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:08:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:08:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:08:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:08:41,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:08:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:08:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:08:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:08:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:08:41,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:08:44,388 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:08:44,389 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:08:44,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:08:44 BoogieIcfgContainer [2020-10-29 13:08:44,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:08:44,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:08:44,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:08:44,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:08:44,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:08:40" (1/3) ... [2020-10-29 13:08:44,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df0e235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:08:44, skipping insertion in model container [2020-10-29 13:08:44,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:08:41" (2/3) ... [2020-10-29 13:08:44,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df0e235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:08:44, skipping insertion in model container [2020-10-29 13:08:44,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:08:44" (3/3) ... [2020-10-29 13:08:44,404 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:08:44,417 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:08:44,424 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:08:44,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:08:44,473 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:08:44,473 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:08:44,473 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:08:44,473 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:08:44,474 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:08:44,474 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:08:44,474 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:08:44,474 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:08:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-10-29 13:08:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 13:08:44,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:44,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:44,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:44,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:44,547 INFO L82 PathProgramCache]: Analyzing trace with hash -425219858, now seen corresponding path program 1 times [2020-10-29 13:08:44,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:44,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866264703] [2020-10-29 13:08:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:45,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:46,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:47,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:47,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:50,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:50,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 13:08:50,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:08:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-10-29 13:08:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:50,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:08:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-29 13:08:50,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:08:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:08:51,722 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:08:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:08:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:08:51,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:08:51,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:08:51,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:08:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 13:08:51,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:08:51,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:08:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:08:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:08:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:08:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:08:52,033 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 13:08:52,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866264703] [2020-10-29 13:08:52,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:08:52,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:08:52,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754540964] [2020-10-29 13:08:52,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:08:52,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:08:52,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:08:52,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:08:52,074 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 4 states. [2020-10-29 13:08:53,456 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 13:08:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:08:59,504 INFO L93 Difference]: Finished difference Result 1124 states and 2002 transitions. [2020-10-29 13:08:59,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:08:59,506 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-10-29 13:08:59,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:08:59,546 INFO L225 Difference]: With dead ends: 1124 [2020-10-29 13:08:59,547 INFO L226 Difference]: Without dead ends: 918 [2020-10-29 13:08:59,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:08:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-10-29 13:08:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 915. [2020-10-29 13:08:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-10-29 13:08:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1593 transitions. [2020-10-29 13:08:59,687 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1593 transitions. Word has length 209 [2020-10-29 13:08:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:08:59,688 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1593 transitions. [2020-10-29 13:08:59,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:08:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1593 transitions. [2020-10-29 13:08:59,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 13:08:59,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:08:59,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:59,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:08:59,696 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:08:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:08:59,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1149758641, now seen corresponding path program 1 times [2020-10-29 13:08:59,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:08:59,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561175263] [2020-10-29 13:08:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:08:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:08:59,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:00,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:01,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:01,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:03,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:04,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:04,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 13:09:04,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:09:04,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 13:09:04,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:04,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:04,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 13:09:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:06,420 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:09:06,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:06,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:06,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:06,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 13:09:06,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:06,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:06,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:06,733 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 13:09:06,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561175263] [2020-10-29 13:09:06,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:06,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:06,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445074120] [2020-10-29 13:09:06,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:06,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:06,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:06,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:06,737 INFO L87 Difference]: Start difference. First operand 915 states and 1593 transitions. Second operand 5 states. [2020-10-29 13:09:15,585 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:09:15,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:15,760 INFO L93 Difference]: Finished difference Result 2610 states and 4537 transitions. [2020-10-29 13:09:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:15,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-29 13:09:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:15,775 INFO L225 Difference]: With dead ends: 2610 [2020-10-29 13:09:15,775 INFO L226 Difference]: Without dead ends: 1772 [2020-10-29 13:09:15,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2020-10-29 13:09:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1769. [2020-10-29 13:09:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1769 states. [2020-10-29 13:09:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 3070 transitions. [2020-10-29 13:09:15,949 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 3070 transitions. Word has length 213 [2020-10-29 13:09:15,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:15,951 INFO L481 AbstractCegarLoop]: Abstraction has 1769 states and 3070 transitions. [2020-10-29 13:09:15,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:15,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 3070 transitions. [2020-10-29 13:09:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 13:09:16,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:16,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:16,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:09:16,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:16,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1055345820, now seen corresponding path program 1 times [2020-10-29 13:09:16,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:16,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74271040] [2020-10-29 13:09:16,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:16,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:17,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:21,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:21,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 13:09:21,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:09:21,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5198 [2020-10-29 13:09:21,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:21,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:21,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 13:09:21,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:22,708 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:09:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:22,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:22,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:09:22,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:22,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:22,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:22,919 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 13:09:22,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74271040] [2020-10-29 13:09:22,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:22,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:22,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621368266] [2020-10-29 13:09:22,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:22,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:22,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:22,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:22,922 INFO L87 Difference]: Start difference. First operand 1769 states and 3070 transitions. Second operand 5 states. [2020-10-29 13:09:31,368 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:09:31,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:31,582 INFO L93 Difference]: Finished difference Result 5189 states and 9004 transitions. [2020-10-29 13:09:31,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:31,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-29 13:09:31,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:31,603 INFO L225 Difference]: With dead ends: 5189 [2020-10-29 13:09:31,604 INFO L226 Difference]: Without dead ends: 3505 [2020-10-29 13:09:31,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3505 states. [2020-10-29 13:09:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3505 to 3502. [2020-10-29 13:09:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3502 states. [2020-10-29 13:09:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 6062 transitions. [2020-10-29 13:09:31,861 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 6062 transitions. Word has length 213 [2020-10-29 13:09:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:31,862 INFO L481 AbstractCegarLoop]: Abstraction has 3502 states and 6062 transitions. [2020-10-29 13:09:31,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 6062 transitions. [2020-10-29 13:09:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 13:09:31,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:31,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:31,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:09:31,872 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:31,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:31,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1651925409, now seen corresponding path program 1 times [2020-10-29 13:09:31,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:31,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507812773] [2020-10-29 13:09:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:32,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:33,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:34,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:36,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:36,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:36,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 13:09:36,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:09:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:09:36,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:36,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 13:09:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:38,245 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:09:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:38,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:38,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:38,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:09:38,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:38,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:38,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:09:38,481 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 13:09:38,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507812773] [2020-10-29 13:09:38,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:38,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:38,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951066241] [2020-10-29 13:09:38,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:38,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:38,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:38,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:38,484 INFO L87 Difference]: Start difference. First operand 3502 states and 6062 transitions. Second operand 5 states. [2020-10-29 13:09:46,634 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:09:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:09:46,850 INFO L93 Difference]: Finished difference Result 10050 states and 17361 transitions. [2020-10-29 13:09:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:09:46,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-29 13:09:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:09:46,891 INFO L225 Difference]: With dead ends: 10050 [2020-10-29 13:09:46,891 INFO L226 Difference]: Without dead ends: 6839 [2020-10-29 13:09:46,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:09:46,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2020-10-29 13:09:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 6836. [2020-10-29 13:09:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6836 states. [2020-10-29 13:09:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6836 states to 6836 states and 11787 transitions. [2020-10-29 13:09:47,519 INFO L78 Accepts]: Start accepts. Automaton has 6836 states and 11787 transitions. Word has length 214 [2020-10-29 13:09:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:09:47,520 INFO L481 AbstractCegarLoop]: Abstraction has 6836 states and 11787 transitions. [2020-10-29 13:09:47,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:09:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6836 states and 11787 transitions. [2020-10-29 13:09:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 13:09:47,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:09:47,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:47,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:09:47,541 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:09:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:09:47,541 INFO L82 PathProgramCache]: Analyzing trace with hash 360459231, now seen corresponding path program 1 times [2020-10-29 13:09:47,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:09:47,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178577087] [2020-10-29 13:09:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:09:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:47,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:48,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:48,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:49,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:52,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:52,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-29 13:09:52,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:09:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 13:09:52,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:52,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:09:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:09:52,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 13:09:52,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:54,065 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:09:54,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:09:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:09:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:09:54,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:09:54,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:09:54,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:09:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:09:54,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:09:54,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:09:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:09:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:09:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:09:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:09:54,270 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 13:09:54,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178577087] [2020-10-29 13:09:54,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:09:54,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:09:54,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572203026] [2020-10-29 13:09:54,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:09:54,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:09:54,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:09:54,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:09:54,273 INFO L87 Difference]: Start difference. First operand 6836 states and 11787 transitions. Second operand 5 states. [2020-10-29 13:10:03,737 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:10:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:04,078 INFO L93 Difference]: Finished difference Result 19714 states and 33905 transitions. [2020-10-29 13:10:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:04,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-29 13:10:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:04,148 INFO L225 Difference]: With dead ends: 19714 [2020-10-29 13:10:04,148 INFO L226 Difference]: Without dead ends: 13408 [2020-10-29 13:10:04,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:10:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2020-10-29 13:10:05,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 13405. [2020-10-29 13:10:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13405 states. [2020-10-29 13:10:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13405 states to 13405 states and 23013 transitions. [2020-10-29 13:10:05,425 INFO L78 Accepts]: Start accepts. Automaton has 13405 states and 23013 transitions. Word has length 215 [2020-10-29 13:10:05,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:05,425 INFO L481 AbstractCegarLoop]: Abstraction has 13405 states and 23013 transitions. [2020-10-29 13:10:05,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:10:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 13405 states and 23013 transitions. [2020-10-29 13:10:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 13:10:05,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:05,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:05,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:10:05,454 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:05,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:05,454 INFO L82 PathProgramCache]: Analyzing trace with hash 781905102, now seen corresponding path program 1 times [2020-10-29 13:10:05,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:05,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123182044] [2020-10-29 13:10:05,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:06,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:07,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:08,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:08,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:10,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:10,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:10,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-29 13:10:10,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:10:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 13:10:10,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:10,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:10:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:10:10,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-29 13:10:10,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:11,818 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:10:11,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:11,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:11,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:11,950 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 13:10:11,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123182044] [2020-10-29 13:10:11,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:11,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:10:11,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601691179] [2020-10-29 13:10:11,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:10:11,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:11,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:10:11,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:11,953 INFO L87 Difference]: Start difference. First operand 13405 states and 23013 transitions. Second operand 5 states. [2020-10-29 13:10:21,463 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:10:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:22,114 INFO L93 Difference]: Finished difference Result 39501 states and 67771 transitions. [2020-10-29 13:10:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:22,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-29 13:10:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:22,177 INFO L225 Difference]: With dead ends: 39501 [2020-10-29 13:10:22,178 INFO L226 Difference]: Without dead ends: 26434 [2020-10-29 13:10:22,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:10:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26434 states. [2020-10-29 13:10:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26434 to 26431. [2020-10-29 13:10:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26431 states. [2020-10-29 13:10:24,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26431 states to 26431 states and 45141 transitions. [2020-10-29 13:10:24,486 INFO L78 Accepts]: Start accepts. Automaton has 26431 states and 45141 transitions. Word has length 215 [2020-10-29 13:10:24,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:24,487 INFO L481 AbstractCegarLoop]: Abstraction has 26431 states and 45141 transitions. [2020-10-29 13:10:24,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:10:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 26431 states and 45141 transitions. [2020-10-29 13:10:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 13:10:24,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:24,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:24,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:10:24,544 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:24,545 INFO L82 PathProgramCache]: Analyzing trace with hash 493743167, now seen corresponding path program 1 times [2020-10-29 13:10:24,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:24,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117451466] [2020-10-29 13:10:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:24,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:26,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:26,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:28,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:29,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:29,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 13:10:29,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:10:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:10:29,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:29,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:29,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:10:29,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:10:29,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 13:10:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:30,922 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:10:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:30,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:30,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:30,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:10:30,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:30,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:30,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:30,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:31,076 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 13:10:31,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117451466] [2020-10-29 13:10:31,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:31,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:10:31,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36332053] [2020-10-29 13:10:31,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:10:31,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:31,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:10:31,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:31,078 INFO L87 Difference]: Start difference. First operand 26431 states and 45141 transitions. Second operand 5 states. [2020-10-29 13:10:41,454 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:10:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:42,544 INFO L93 Difference]: Finished difference Result 77392 states and 132078 transitions. [2020-10-29 13:10:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:10:42,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-29 13:10:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:42,675 INFO L225 Difference]: With dead ends: 77392 [2020-10-29 13:10:42,675 INFO L226 Difference]: Without dead ends: 51527 [2020-10-29 13:10:42,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:10:42,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51527 states. [2020-10-29 13:10:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51527 to 51524. [2020-10-29 13:10:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51524 states. [2020-10-29 13:10:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51524 states to 51524 states and 87535 transitions. [2020-10-29 13:10:47,312 INFO L78 Accepts]: Start accepts. Automaton has 51524 states and 87535 transitions. Word has length 216 [2020-10-29 13:10:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:47,313 INFO L481 AbstractCegarLoop]: Abstraction has 51524 states and 87535 transitions. [2020-10-29 13:10:47,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:10:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 51524 states and 87535 transitions. [2020-10-29 13:10:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 13:10:47,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:47,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:47,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:10:47,376 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:47,377 INFO L82 PathProgramCache]: Analyzing trace with hash 442284005, now seen corresponding path program 1 times [2020-10-29 13:10:47,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:47,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462501677] [2020-10-29 13:10:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:52,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:52,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 13:10:52,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:10:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 13:10:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:52,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:10:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:10:52,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 13:10:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:53,803 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:10:53,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:53,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:53,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:53,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:10:53,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:53,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:10:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:53,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:10:53,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:10:53,936 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 13:10:53,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462501677] [2020-10-29 13:10:53,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:53,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:10:53,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028129267] [2020-10-29 13:10:53,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:10:53,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:53,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:10:53,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:10:53,939 INFO L87 Difference]: Start difference. First operand 51524 states and 87535 transitions. Second operand 8 states. [2020-10-29 13:10:55,327 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:11:05,730 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 13:11:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:10,108 INFO L93 Difference]: Finished difference Result 88386 states and 149503 transitions. [2020-10-29 13:11:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:11:10,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-29 13:11:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:10,207 INFO L225 Difference]: With dead ends: 88386 [2020-10-29 13:11:10,207 INFO L226 Difference]: Without dead ends: 66815 [2020-10-29 13:11:10,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:11:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66815 states. [2020-10-29 13:11:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66815 to 59876. [2020-10-29 13:11:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59876 states. [2020-10-29 13:11:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59876 states to 59876 states and 101231 transitions. [2020-10-29 13:11:15,598 INFO L78 Accepts]: Start accepts. Automaton has 59876 states and 101231 transitions. Word has length 217 [2020-10-29 13:11:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:15,599 INFO L481 AbstractCegarLoop]: Abstraction has 59876 states and 101231 transitions. [2020-10-29 13:11:15,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:11:15,599 INFO L276 IsEmpty]: Start isEmpty. Operand 59876 states and 101231 transitions. [2020-10-29 13:11:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 13:11:15,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:15,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:15,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:11:15,652 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:15,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:15,653 INFO L82 PathProgramCache]: Analyzing trace with hash 363075368, now seen corresponding path program 1 times [2020-10-29 13:11:15,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:15,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147000171] [2020-10-29 13:11:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:15,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:17,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:19,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:20,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:20,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 13:11:20,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:11:20,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:11:20,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:20,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:11:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:11:20,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 13:11:20,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:22,026 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:11:22,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:22,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:22,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:22,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:22,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 13:11:22,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:22,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:11:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:11:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:22,196 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 13:11:22,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147000171] [2020-10-29 13:11:22,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:22,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:11:22,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093276863] [2020-10-29 13:11:22,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:11:22,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:22,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:11:22,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:11:22,198 INFO L87 Difference]: Start difference. First operand 59876 states and 101231 transitions. Second operand 8 states. [2020-10-29 13:11:23,497 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:11:34,109 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 13:11:38,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:38,610 INFO L93 Difference]: Finished difference Result 72506 states and 121819 transitions. [2020-10-29 13:11:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:11:38,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-29 13:11:38,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:38,700 INFO L225 Difference]: With dead ends: 72506 [2020-10-29 13:11:38,701 INFO L226 Difference]: Without dead ends: 66887 [2020-10-29 13:11:38,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:11:38,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66887 states. [2020-10-29 13:11:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66887 to 59972. [2020-10-29 13:11:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59972 states. [2020-10-29 13:11:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59972 states to 59972 states and 101359 transitions. [2020-10-29 13:11:44,147 INFO L78 Accepts]: Start accepts. Automaton has 59972 states and 101359 transitions. Word has length 217 [2020-10-29 13:11:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:44,147 INFO L481 AbstractCegarLoop]: Abstraction has 59972 states and 101359 transitions. [2020-10-29 13:11:44,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:11:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 59972 states and 101359 transitions. [2020-10-29 13:11:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 13:11:44,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:44,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:44,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:11:44,201 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:44,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:44,202 INFO L82 PathProgramCache]: Analyzing trace with hash -485547104, now seen corresponding path program 1 times [2020-10-29 13:11:44,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:44,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679811278] [2020-10-29 13:11:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:45,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:48,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:49,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 13:11:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:11:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-29 13:11:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:49,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:11:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:11:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-29 13:11:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:50,637 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:11:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:50,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:50,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 13:11:50,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:50,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:11:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:11:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:50,839 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 13:11:50,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679811278] [2020-10-29 13:11:50,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:50,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:11:50,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651808754] [2020-10-29 13:11:50,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:11:50,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:50,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:11:50,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:11:50,842 INFO L87 Difference]: Start difference. First operand 59972 states and 101359 transitions. Second operand 8 states. [2020-10-29 13:11:52,109 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:12:02,067 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 13:12:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:12:06,574 INFO L93 Difference]: Finished difference Result 72662 states and 122043 transitions. [2020-10-29 13:12:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:12:06,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-29 13:12:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:12:06,653 INFO L225 Difference]: With dead ends: 72662 [2020-10-29 13:12:06,653 INFO L226 Difference]: Without dead ends: 67043 [2020-10-29 13:12:06,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:12:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67043 states. [2020-10-29 13:12:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67043 to 60164. [2020-10-29 13:12:12,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60164 states. [2020-10-29 13:12:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60164 states to 60164 states and 101647 transitions. [2020-10-29 13:12:12,142 INFO L78 Accepts]: Start accepts. Automaton has 60164 states and 101647 transitions. Word has length 217 [2020-10-29 13:12:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:12:12,143 INFO L481 AbstractCegarLoop]: Abstraction has 60164 states and 101647 transitions. [2020-10-29 13:12:12,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:12:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 60164 states and 101647 transitions. [2020-10-29 13:12:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 13:12:12,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:12:12,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:12:12,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:12:12,341 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:12:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:12:12,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1522425342, now seen corresponding path program 1 times [2020-10-29 13:12:12,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:12:12,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372524400] [2020-10-29 13:12:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:12:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:12,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:13,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:13,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:13,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:17,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:17,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 13:12:17,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:12:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:12:17,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:17,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:12:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-10-29 13:12:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:12:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:18,629 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:12:18,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:12:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:18,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:18,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:18,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:12:18,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:12:18,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:12:18,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:18,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:18,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:12:18,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:12:18,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:12:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:18,740 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 13:12:18,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372524400] [2020-10-29 13:12:18,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:12:18,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:12:18,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986416060] [2020-10-29 13:12:18,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:12:18,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:12:18,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:12:18,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:12:18,742 INFO L87 Difference]: Start difference. First operand 60164 states and 101647 transitions. Second operand 4 states. [2020-10-29 13:12:19,934 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 399