/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.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:01:32,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:01:32,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:01:33,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:01:33,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:01:33,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:01:33,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:01:33,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:01:33,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:01:33,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:01:33,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:01:33,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:01:33,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:01:33,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:01:33,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:01:33,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:01:33,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:01:33,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:01:33,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:01:33,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:01:33,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:01:33,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:01:33,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:01:33,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:01:33,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:01:33,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:01:33,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:01:33,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:01:33,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:01:33,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:01:33,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:01:33,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:01:33,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:01:33,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:01:33,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:01:33,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:01:33,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:01:33,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:01:33,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:01:33,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:01:33,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:01:33,141 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 13:01:33,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:01:33,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:01:33,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:01:33,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:01:33,171 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:01:33,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:01:33,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:01:33,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:01:33,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:01:33,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:01:33,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:01:33,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:01:33,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:01:33,173 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:01:33,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:01:33,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:01:33,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:01:33,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:01:33,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:01:33,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:01:33,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:01:33,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:01:33,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:01:33,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:01:33,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:01:33,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:01:33,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:01:33,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:01:33,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:01:33,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:01:33,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:01:33,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:01:33,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:01:33,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:01:33,577 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:01:33,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 13:01:33,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a7cf082a/3b9557f567c24c95b79472a069cf5bd7/FLAG8a797314f [2020-10-29 13:01:34,436 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:01:34,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 13:01:34,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a7cf082a/3b9557f567c24c95b79472a069cf5bd7/FLAG8a797314f [2020-10-29 13:01:34,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a7cf082a/3b9557f567c24c95b79472a069cf5bd7 [2020-10-29 13:01:34,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:01:34,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:01:34,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:01:34,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:01:34,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:01:34,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:01:34" (1/1) ... [2020-10-29 13:01:34,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151f1b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:34, skipping insertion in model container [2020-10-29 13:01:34,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:01:34" (1/1) ... [2020-10-29 13:01:34,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:01:34,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:01:35,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:01:35,283 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:01:35,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:01:35,502 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:01:35,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35 WrapperNode [2020-10-29 13:01:35,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:01:35,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:01:35,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:01:35,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:01:35,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (1/1) ... [2020-10-29 13:01:35,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (1/1) ... [2020-10-29 13:01:35,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (1/1) ... [2020-10-29 13:01:35,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (1/1) ... [2020-10-29 13:01:35,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (1/1) ... [2020-10-29 13:01:35,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (1/1) ... [2020-10-29 13:01:35,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (1/1) ... [2020-10-29 13:01:35,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:01:35,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:01:35,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:01:35,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:01:35,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (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 13:01:35,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:01:35,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:01:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:01:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:01:35,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:01:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:01:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:01:35,781 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:01:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:01:35,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:01:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:01:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:01:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:01:35,783 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:01:35,784 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:01:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:01:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:01:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:01:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:01:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:01:35,785 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:01:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:01:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:01:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:01:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:01:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:01:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:01:35,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:01:37,391 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:01:37,392 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:01:37,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:01:37 BoogieIcfgContainer [2020-10-29 13:01:37,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:01:37,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:01:37,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:01:37,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:01:37,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:01:34" (1/3) ... [2020-10-29 13:01:37,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568b2d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:01:37, skipping insertion in model container [2020-10-29 13:01:37,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:01:35" (2/3) ... [2020-10-29 13:01:37,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568b2d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:01:37, skipping insertion in model container [2020-10-29 13:01:37,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:01:37" (3/3) ... [2020-10-29 13:01:37,403 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-29 13:01:37,416 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:01:37,421 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:01:37,435 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:01:37,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:01:37,466 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:01:37,466 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:01:37,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:01:37,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:01:37,466 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:01:37,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:01:37,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:01:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-29 13:01:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 13:01:37,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:37,510 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] [2020-10-29 13:01:37,511 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:37,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1566272280, now seen corresponding path program 1 times [2020-10-29 13:01:37,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:37,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919933104] [2020-10-29 13:01:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:43,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:43,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 13:01:43,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:01:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 13:01:43,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:43,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:01:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 13:01:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 13:01:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:01:43,890 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:01:43,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:43,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:43,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:43,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:43,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:43,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:01:43,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:43,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:43,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:43,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:01:43,986 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 13:01:43,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919933104] [2020-10-29 13:01:43,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:43,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:01:43,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254514651] [2020-10-29 13:01:43,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:01:43,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:44,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:01:44,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:01:44,015 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 4 states. [2020-10-29 13:01:44,739 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-29 13:01:47,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:47,390 INFO L93 Difference]: Finished difference Result 583 states and 1010 transitions. [2020-10-29 13:01:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:01:47,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-29 13:01:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:47,430 INFO L225 Difference]: With dead ends: 583 [2020-10-29 13:01:47,430 INFO L226 Difference]: Without dead ends: 440 [2020-10-29 13:01:47,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:47,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-29 13:01:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 437. [2020-10-29 13:01:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-29 13:01:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 727 transitions. [2020-10-29 13:01:47,550 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 727 transitions. Word has length 116 [2020-10-29 13:01:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:47,552 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 727 transitions. [2020-10-29 13:01:47,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:01:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 727 transitions. [2020-10-29 13:01:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 13:01:47,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:47,557 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] [2020-10-29 13:01:47,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:01:47,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:47,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:47,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2097749728, now seen corresponding path program 1 times [2020-10-29 13:01:47,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:47,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533181608] [2020-10-29 13:01:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:47,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:49,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:52,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:52,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 13:01:52,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:01:52,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 13:01:52,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:52,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:01:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:01:52,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 13:01:52,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 13:01:53,585 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:01:53,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:01:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:53,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:53,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:01:53,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:01:53,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:01:53,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:01:53,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:01:53,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:01:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:01:53,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:01:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:01:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:01:53,717 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 13:01:53,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533181608] [2020-10-29 13:01:53,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:01:53,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:01:53,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910833137] [2020-10-29 13:01:53,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:01:53,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:01:53,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:01:53,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:01:53,722 INFO L87 Difference]: Start difference. First operand 437 states and 727 transitions. Second operand 5 states. [2020-10-29 13:01:56,883 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:01:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:01:57,014 INFO L93 Difference]: Finished difference Result 1231 states and 2044 transitions. [2020-10-29 13:01:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:01:57,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-29 13:01:57,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:01:57,022 INFO L225 Difference]: With dead ends: 1231 [2020-10-29 13:01:57,022 INFO L226 Difference]: Without dead ends: 847 [2020-10-29 13:01:57,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:01:57,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-29 13:01:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 844. [2020-10-29 13:01:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-29 13:01:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1398 transitions. [2020-10-29 13:01:57,129 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1398 transitions. Word has length 119 [2020-10-29 13:01:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:01:57,130 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 1398 transitions. [2020-10-29 13:01:57,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:01:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1398 transitions. [2020-10-29 13:01:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 13:01:57,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:01:57,138 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] [2020-10-29 13:01:57,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:01:57,138 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:01:57,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:01:57,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1975387022, now seen corresponding path program 1 times [2020-10-29 13:01:57,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:01:57,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685265749] [2020-10-29 13:01:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:01:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:01:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:57,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:01:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:02,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:02,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 13:02:02,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:02:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:02:02,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:02,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:02:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:02:02,999 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:02:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:03,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:03,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:03,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:03,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:03,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:02:03,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:03,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:03,107 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 13:02:03,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685265749] [2020-10-29 13:02:03,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:03,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:03,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546742376] [2020-10-29 13:02:03,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:03,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:03,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:03,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:03,112 INFO L87 Difference]: Start difference. First operand 844 states and 1398 transitions. Second operand 5 states. [2020-10-29 13:02:06,315 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:02:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:06,477 INFO L93 Difference]: Finished difference Result 2393 states and 3954 transitions. [2020-10-29 13:02:06,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:02:06,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-29 13:02:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:06,497 INFO L225 Difference]: With dead ends: 2393 [2020-10-29 13:02:06,497 INFO L226 Difference]: Without dead ends: 1616 [2020-10-29 13:02:06,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:06,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2020-10-29 13:02:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1613. [2020-10-29 13:02:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1613 states. [2020-10-29 13:02:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2658 transitions. [2020-10-29 13:02:06,657 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2658 transitions. Word has length 119 [2020-10-29 13:02:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:06,659 INFO L481 AbstractCegarLoop]: Abstraction has 1613 states and 2658 transitions. [2020-10-29 13:02:06,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2658 transitions. [2020-10-29 13:02:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:02:06,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:06,667 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] [2020-10-29 13:02:06,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:02:06,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:06,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:06,669 INFO L82 PathProgramCache]: Analyzing trace with hash -386081102, now seen corresponding path program 1 times [2020-10-29 13:02:06,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:06,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995202051] [2020-10-29 13:02:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:07,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:07,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:07,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:11,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:11,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:02:11,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:02:11,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 13:02:11,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:11,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:11,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:02:11,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:02:11,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 13:02:11,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:02:12,542 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:02:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:12,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:12,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:12,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 13:02:12,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:12,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:02:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:12,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:02:12,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:12,692 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 13:02:12,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995202051] [2020-10-29 13:02:12,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:12,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:02:12,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504950210] [2020-10-29 13:02:12,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:02:12,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:12,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:02:12,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:02:12,695 INFO L87 Difference]: Start difference. First operand 1613 states and 2658 transitions. Second operand 8 states. [2020-10-29 13:02:13,410 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:02:16,267 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-29 13:02:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:17,164 INFO L93 Difference]: Finished difference Result 3196 states and 5320 transitions. [2020-10-29 13:02:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:02:17,165 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-29 13:02:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:17,178 INFO L225 Difference]: With dead ends: 3196 [2020-10-29 13:02:17,178 INFO L226 Difference]: Without dead ends: 2267 [2020-10-29 13:02:17,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:02:17,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2020-10-29 13:02:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1941. [2020-10-29 13:02:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1941 states. [2020-10-29 13:02:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 3190 transitions. [2020-10-29 13:02:17,343 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 3190 transitions. Word has length 120 [2020-10-29 13:02:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:17,343 INFO L481 AbstractCegarLoop]: Abstraction has 1941 states and 3190 transitions. [2020-10-29 13:02:17,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:02:17,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 3190 transitions. [2020-10-29 13:02:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:02:17,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:17,347 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] [2020-10-29 13:02:17,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:02:17,348 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:17,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:17,348 INFO L82 PathProgramCache]: Analyzing trace with hash -877057179, now seen corresponding path program 1 times [2020-10-29 13:02:17,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:17,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222282337] [2020-10-29 13:02:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:17,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:18,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:19,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:22,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:22,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:02:22,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:02:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:02:22,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:22,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:22,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 13:02:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:23,278 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:02:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:23,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:23,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:23,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:23,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:02:23,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:23,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:23,387 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 13:02:23,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222282337] [2020-10-29 13:02:23,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:23,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:23,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032883677] [2020-10-29 13:02:23,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:23,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:23,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:23,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:23,390 INFO L87 Difference]: Start difference. First operand 1941 states and 3190 transitions. Second operand 5 states. [2020-10-29 13:02:26,424 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:02:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:26,623 INFO L93 Difference]: Finished difference Result 5559 states and 9114 transitions. [2020-10-29 13:02:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:02:26,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-29 13:02:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:26,649 INFO L225 Difference]: With dead ends: 5559 [2020-10-29 13:02:26,649 INFO L226 Difference]: Without dead ends: 3778 [2020-10-29 13:02:26,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2020-10-29 13:02:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3775. [2020-10-29 13:02:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3775 states. [2020-10-29 13:02:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 6178 transitions. [2020-10-29 13:02:26,990 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 6178 transitions. Word has length 120 [2020-10-29 13:02:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:26,990 INFO L481 AbstractCegarLoop]: Abstraction has 3775 states and 6178 transitions. [2020-10-29 13:02:26,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:26,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 6178 transitions. [2020-10-29 13:02:26,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:02:26,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:26,997 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] [2020-10-29 13:02:26,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:02:26,997 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:26,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:26,998 INFO L82 PathProgramCache]: Analyzing trace with hash -592381075, now seen corresponding path program 1 times [2020-10-29 13:02:26,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:26,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257208795] [2020-10-29 13:02:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:32,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:32,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:02:32,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:02:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 13:02:32,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:32,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 13:02:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:32,789 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:02:32,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:32,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:32,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:32,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:32,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:02:32,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:32,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:32,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:32,886 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 13:02:32,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257208795] [2020-10-29 13:02:32,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:32,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:32,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099992273] [2020-10-29 13:02:32,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:32,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:32,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:32,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:32,888 INFO L87 Difference]: Start difference. First operand 3775 states and 6178 transitions. Second operand 5 states. [2020-10-29 13:02:36,314 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:02:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:36,634 INFO L93 Difference]: Finished difference Result 10982 states and 17954 transitions. [2020-10-29 13:02:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:02:36,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-29 13:02:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:36,677 INFO L225 Difference]: With dead ends: 10982 [2020-10-29 13:02:36,677 INFO L226 Difference]: Without dead ends: 7355 [2020-10-29 13:02:36,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2020-10-29 13:02:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7352. [2020-10-29 13:02:37,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7352 states. [2020-10-29 13:02:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 11982 transitions. [2020-10-29 13:02:37,552 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 11982 transitions. Word has length 121 [2020-10-29 13:02:37,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:37,552 INFO L481 AbstractCegarLoop]: Abstraction has 7352 states and 11982 transitions. [2020-10-29 13:02:37,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 11982 transitions. [2020-10-29 13:02:37,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:02:37,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:37,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:37,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:02:37,566 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:37,567 INFO L82 PathProgramCache]: Analyzing trace with hash -739136910, now seen corresponding path program 1 times [2020-10-29 13:02:37,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:37,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310723491] [2020-10-29 13:02:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:37,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:38,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:42,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:42,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:02:42,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:02:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:02:42,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:42,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:02:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:02:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 13:02:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:43,358 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:02:43,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:43,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:43,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:43,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:02:43,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:43,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:02:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:43,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:02:43,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:43,433 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 13:02:43,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310723491] [2020-10-29 13:02:43,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:43,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:02:43,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85888935] [2020-10-29 13:02:43,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:02:43,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:43,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:02:43,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:02:43,435 INFO L87 Difference]: Start difference. First operand 7352 states and 11982 transitions. Second operand 5 states. [2020-10-29 13:02:47,179 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:02:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:02:47,849 INFO L93 Difference]: Finished difference Result 20735 states and 33672 transitions. [2020-10-29 13:02:47,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:02:47,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-29 13:02:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:02:47,911 INFO L225 Difference]: With dead ends: 20735 [2020-10-29 13:02:47,911 INFO L226 Difference]: Without dead ends: 14254 [2020-10-29 13:02:47,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:02:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14254 states. [2020-10-29 13:02:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14254 to 14251. [2020-10-29 13:02:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14251 states. [2020-10-29 13:02:49,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14251 states to 14251 states and 23103 transitions. [2020-10-29 13:02:49,429 INFO L78 Accepts]: Start accepts. Automaton has 14251 states and 23103 transitions. Word has length 121 [2020-10-29 13:02:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:02:49,429 INFO L481 AbstractCegarLoop]: Abstraction has 14251 states and 23103 transitions. [2020-10-29 13:02:49,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:02:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 14251 states and 23103 transitions. [2020-10-29 13:02:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:02:49,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:02:49,454 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] [2020-10-29 13:02:49,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:02:49,454 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:02:49,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:02:49,455 INFO L82 PathProgramCache]: Analyzing trace with hash -570562793, now seen corresponding path program 1 times [2020-10-29 13:02:49,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:02:49,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260794106] [2020-10-29 13:02:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:02:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:50,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:51,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:51,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:54,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:54,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:02:54,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:02:54,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:02:54,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:54,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:02:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:02:54,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 13:02:54,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:55,216 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:02:55,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:02:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:02:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:02:55,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:02:55,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:02:55,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:02:55,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:02:55,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:02:55,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:02:55,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:02:55,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:02:55,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:02:55,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:02:55,353 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 13:02:55,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260794106] [2020-10-29 13:02:55,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:02:55,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:02:55,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762270741] [2020-10-29 13:02:55,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:02:55,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:02:55,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:02:55,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:02:55,355 INFO L87 Difference]: Start difference. First operand 14251 states and 23103 transitions. Second operand 8 states. [2020-10-29 13:02:56,071 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:02:59,304 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-29 13:03:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:00,903 INFO L93 Difference]: Finished difference Result 18525 states and 29995 transitions. [2020-10-29 13:03:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:03:00,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-29 13:03:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:00,944 INFO L225 Difference]: With dead ends: 18525 [2020-10-29 13:03:00,945 INFO L226 Difference]: Without dead ends: 16682 [2020-10-29 13:03:00,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-29 13:03:00,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16682 states. [2020-10-29 13:03:02,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16682 to 14347. [2020-10-29 13:03:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14347 states. [2020-10-29 13:03:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14347 states to 14347 states and 23247 transitions. [2020-10-29 13:03:02,312 INFO L78 Accepts]: Start accepts. Automaton has 14347 states and 23247 transitions. Word has length 122 [2020-10-29 13:03:02,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:02,313 INFO L481 AbstractCegarLoop]: Abstraction has 14347 states and 23247 transitions. [2020-10-29 13:03:02,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:03:02,313 INFO L276 IsEmpty]: Start isEmpty. Operand 14347 states and 23247 transitions. [2020-10-29 13:03:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 13:03:02,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:02,331 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] [2020-10-29 13:03:02,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:03:02,332 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1160103308, now seen corresponding path program 1 times [2020-10-29 13:03:02,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:02,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78010357] [2020-10-29 13:03:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:02,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:03,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4731 [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 13:03:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:07,725 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:03:07,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:07,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:07,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:07,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:07,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:03:07,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:07,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:07,778 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 13:03:07,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78010357] [2020-10-29 13:03:07,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:07,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:03:07,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145766115] [2020-10-29 13:03:07,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:03:07,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:07,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:03:07,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:03:07,781 INFO L87 Difference]: Start difference. First operand 14347 states and 23247 transitions. Second operand 4 states. [2020-10-29 13:03:08,427 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-29 13:03:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:12,519 INFO L93 Difference]: Finished difference Result 29713 states and 48755 transitions. [2020-10-29 13:03:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:03:12,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-29 13:03:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:12,579 INFO L225 Difference]: With dead ends: 29713 [2020-10-29 13:03:12,579 INFO L226 Difference]: Without dead ends: 21742 [2020-10-29 13:03:12,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21742 states. [2020-10-29 13:03:14,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21742 to 21739. [2020-10-29 13:03:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21739 states. [2020-10-29 13:03:14,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21739 states to 21739 states and 35391 transitions. [2020-10-29 13:03:14,769 INFO L78 Accepts]: Start accepts. Automaton has 21739 states and 35391 transitions. Word has length 122 [2020-10-29 13:03:14,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:14,769 INFO L481 AbstractCegarLoop]: Abstraction has 21739 states and 35391 transitions. [2020-10-29 13:03:14,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:03:14,769 INFO L276 IsEmpty]: Start isEmpty. Operand 21739 states and 35391 transitions. [2020-10-29 13:03:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 13:03:14,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:14,791 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] [2020-10-29 13:03:14,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:03:14,792 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:14,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1481472961, now seen corresponding path program 1 times [2020-10-29 13:03:14,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:14,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846192945] [2020-10-29 13:03:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:14,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:15,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:15,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:15,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:15,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:19,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:19,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 13:03:19,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:03:19,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 13:03:19,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:19,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:19,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:19,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 13:03:19,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:20,545 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:03:20,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:20,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:20,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:20,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:03:20,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:20,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:20,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:20,608 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 13:03:20,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846192945] [2020-10-29 13:03:20,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:20,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:20,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691065520] [2020-10-29 13:03:20,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:20,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:20,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:20,610 INFO L87 Difference]: Start difference. First operand 21739 states and 35391 transitions. Second operand 5 states. [2020-10-29 13:03:25,180 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:03:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:27,818 INFO L93 Difference]: Finished difference Result 63953 states and 104096 transitions. [2020-10-29 13:03:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:27,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-29 13:03:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:27,906 INFO L225 Difference]: With dead ends: 63953 [2020-10-29 13:03:27,906 INFO L226 Difference]: Without dead ends: 42704 [2020-10-29 13:03:27,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42704 states. [2020-10-29 13:03:32,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42704 to 42701. [2020-10-29 13:03:32,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42701 states. [2020-10-29 13:03:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42701 states to 42701 states and 69214 transitions. [2020-10-29 13:03:33,054 INFO L78 Accepts]: Start accepts. Automaton has 42701 states and 69214 transitions. Word has length 126 [2020-10-29 13:03:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:03:33,054 INFO L481 AbstractCegarLoop]: Abstraction has 42701 states and 69214 transitions. [2020-10-29 13:03:33,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:03:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 42701 states and 69214 transitions. [2020-10-29 13:03:33,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-29 13:03:33,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:03:33,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:33,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:03:33,093 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:03:33,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:03:33,094 INFO L82 PathProgramCache]: Analyzing trace with hash 673811137, now seen corresponding path program 1 times [2020-10-29 13:03:33,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:03:33,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225252331] [2020-10-29 13:03:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:03:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:33,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:33,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:38,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:38,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 13:03:38,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:03:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 13:03:38,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:38,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:03:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:03:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 13:03:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:38,863 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:03:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:03:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:03:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:03:38,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:03:38,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:03:38,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:03:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:03:38,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:03:38,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:03:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:03:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:03:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:03:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:03:38,942 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 13:03:38,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225252331] [2020-10-29 13:03:38,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:03:38,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:03:38,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642746804] [2020-10-29 13:03:38,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:03:38,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:03:38,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:03:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:03:38,944 INFO L87 Difference]: Start difference. First operand 42701 states and 69214 transitions. Second operand 5 states. [2020-10-29 13:03:45,176 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:03:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:03:51,551 INFO L93 Difference]: Finished difference Result 125436 states and 203205 transitions. [2020-10-29 13:03:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:03:51,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-29 13:03:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:03:51,710 INFO L225 Difference]: With dead ends: 125436 [2020-10-29 13:03:51,710 INFO L226 Difference]: Without dead ends: 83455 [2020-10-29 13:03:51,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:03:52,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83455 states. [2020-10-29 13:04:01,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83455 to 83452. [2020-10-29 13:04:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83452 states. [2020-10-29 13:04:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83452 states to 83452 states and 134416 transitions. [2020-10-29 13:04:02,056 INFO L78 Accepts]: Start accepts. Automaton has 83452 states and 134416 transitions. Word has length 126 [2020-10-29 13:04:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:02,057 INFO L481 AbstractCegarLoop]: Abstraction has 83452 states and 134416 transitions. [2020-10-29 13:04:02,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:02,057 INFO L276 IsEmpty]: Start isEmpty. Operand 83452 states and 134416 transitions. [2020-10-29 13:04:02,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 13:04:02,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:02,107 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] [2020-10-29 13:04:02,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:04:02,107 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:02,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1940998113, now seen corresponding path program 1 times [2020-10-29 13:04:02,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:02,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586306396] [2020-10-29 13:04:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:02,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:02,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:02,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:02,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:03,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:07,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:07,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 13:04:07,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:04:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:04:07,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:07,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:07,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:04:07,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:04:07,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:04:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:07,914 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:04:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:04:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:07,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:07,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:04:07,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:04:07,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:04:07,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:04:07,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:04:07,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:04:07,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:04:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:04:07,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:04:07,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:04:07,990 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 13:04:07,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586306396] [2020-10-29 13:04:07,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:04:07,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:04:07,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250455675] [2020-10-29 13:04:07,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:04:07,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:04:07,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:04:07,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:04:07,993 INFO L87 Difference]: Start difference. First operand 83452 states and 134416 transitions. Second operand 5 states. [2020-10-29 13:04:18,922 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-29 13:04:32,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:04:32,945 INFO L93 Difference]: Finished difference Result 242714 states and 390892 transitions. [2020-10-29 13:04:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:04:32,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-29 13:04:32,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:04:33,402 INFO L225 Difference]: With dead ends: 242714 [2020-10-29 13:04:33,403 INFO L226 Difference]: Without dead ends: 162871 [2020-10-29 13:04:33,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:04:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162871 states. [2020-10-29 13:04:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162871 to 162868. [2020-10-29 13:04:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162868 states. [2020-10-29 13:04:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162868 states to 162868 states and 261032 transitions. [2020-10-29 13:04:55,442 INFO L78 Accepts]: Start accepts. Automaton has 162868 states and 261032 transitions. Word has length 127 [2020-10-29 13:04:55,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:04:55,442 INFO L481 AbstractCegarLoop]: Abstraction has 162868 states and 261032 transitions. [2020-10-29 13:04:55,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:04:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 162868 states and 261032 transitions. [2020-10-29 13:04:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-29 13:04:55,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:04:55,537 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] [2020-10-29 13:04:55,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:04:55,537 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:04:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:04:55,538 INFO L82 PathProgramCache]: Analyzing trace with hash -421151671, now seen corresponding path program 1 times [2020-10-29 13:04:55,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:04:55,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918897617] [2020-10-29 13:04:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:04:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:04:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:04:58,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:00,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 13:05:00,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:01,278 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-29 13:05:01,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:05:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:05:01,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:05:01,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:05:01,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:05:01,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:05:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:05:01,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:05:01,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:05:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:05:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:05:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:05:01,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:05:01,342 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 13:05:01,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918897617] [2020-10-29 13:05:01,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:05:01,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:05:01,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571366610] [2020-10-29 13:05:01,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:05:01,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:05:01,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:05:01,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:05:01,344 INFO L87 Difference]: Start difference. First operand 162868 states and 261032 transitions. Second operand 5 states.