/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=SHALLOWEST --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_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:07:34,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:07:34,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:07:35,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:07:35,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:07:35,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:07:35,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:07:35,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:07:35,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:07:35,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:07:35,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:07:35,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:07:35,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:07:35,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:07:35,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:07:35,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:07:35,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:07:35,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:07:35,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:07:35,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:07:35,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:07:35,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:07:35,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:07:35,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:07:35,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:07:35,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:07:35,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:07:35,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:07:35,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:07:35,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:07:35,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:07:35,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:07:35,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:07:35,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:07:35,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:07:35,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:07:35,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:07:35,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:07:35,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:07:35,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:07:35,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:07:35,130 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 [2020-10-27 06:07:35,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:07:35,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:07:35,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:07:35,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:07:35,186 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:07:35,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:07:35,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:07:35,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:07:35,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:07:35,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:07:35,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:07:35,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:07:35,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:07:35,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:07:35,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:07:35,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:07:35,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:07:35,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:07:35,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:07:35,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:07:35,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:07:35,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:07:35,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:07:35,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:07:35,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:07:35,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:07:35,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:07:35,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:07:35,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:07:35,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:07:35,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:07:35,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:07:35,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:07:35,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:07:35,633 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:07:35,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:07:35,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18e80ffe8/d4dd7e713f67444fa721c4d6980bf25d/FLAG314923761 [2020-10-27 06:07:36,635 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:07:36,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:07:36,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18e80ffe8/d4dd7e713f67444fa721c4d6980bf25d/FLAG314923761 [2020-10-27 06:07:37,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18e80ffe8/d4dd7e713f67444fa721c4d6980bf25d [2020-10-27 06:07:37,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:07:37,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:07:37,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:37,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:07:37,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:07:37,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:37" (1/1) ... [2020-10-27 06:07:37,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571b4a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:37, skipping insertion in model container [2020-10-27 06:07:37,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:37" (1/1) ... [2020-10-27 06:07:37,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:07:37,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:07:38,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:38,963 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:07:39,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:07:39,807 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:07:39,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39 WrapperNode [2020-10-27 06:07:39,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:07:39,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:07:39,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:07:39,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:07:39,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:39,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:40,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (1/1) ... [2020-10-27 06:07:40,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:07:40,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:07:40,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:07:40,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:07:40,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (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 [2020-10-27 06:07:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:07:40,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:07:40,128 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:07:40,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:07:40,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:07:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:07:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:07:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:07:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:07:40,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:07:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:07:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:07:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:07:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:07:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:07:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:07:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:07:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:07:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:07:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:07:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:07:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:07:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:07:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:07:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:07:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:07:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:07:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:07:43,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:07:43,800 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:07:43,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:43 BoogieIcfgContainer [2020-10-27 06:07:43,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:07:43,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:07:43,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:07:43,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:07:43,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:07:37" (1/3) ... [2020-10-27 06:07:43,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73981b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:43, skipping insertion in model container [2020-10-27 06:07:43,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:39" (2/3) ... [2020-10-27 06:07:43,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73981b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:07:43, skipping insertion in model container [2020-10-27 06:07:43,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:43" (3/3) ... [2020-10-27 06:07:43,814 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 06:07:43,826 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:07:43,833 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:07:43,848 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:07:43,884 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:07:43,885 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:07:43,885 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:07:43,885 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:07:43,885 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:07:43,885 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:07:43,885 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:07:43,885 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:07:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states. [2020-10-27 06:07:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 06:07:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:07:43,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:07:43,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:07:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:07:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash -522103350, now seen corresponding path program 1 times [2020-10-27 06:07:43,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:07:43,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484453736] [2020-10-27 06:07:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:07:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:45,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:46,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:47,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:48,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:49,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:49,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 06:07:49,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:07:49,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 06:07:49,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:07:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:07:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 06:07:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:07:50,808 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:07:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:07:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:07:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:07:50,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:07:50,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:07:50,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:07:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 06:07:50,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:07:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:07:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:07:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:07:50,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:07:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:07:51,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484453736] [2020-10-27 06:07:51,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:07:51,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:07:51,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785486048] [2020-10-27 06:07:51,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:07:51,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:07:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:07:51,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:07:51,181 INFO L87 Difference]: Start difference. First operand 996 states. Second operand 5 states. [2020-10-27 06:08:03,113 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:08:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:06,445 INFO L93 Difference]: Finished difference Result 2878 states and 5196 transitions. [2020-10-27 06:08:06,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:08:06,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-27 06:08:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:06,481 INFO L225 Difference]: With dead ends: 2878 [2020-10-27 06:08:06,482 INFO L226 Difference]: Without dead ends: 1913 [2020-10-27 06:08:06,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:06,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-10-27 06:08:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1849. [2020-10-27 06:08:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1849 states. [2020-10-27 06:08:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2850 transitions. [2020-10-27 06:08:06,722 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2850 transitions. Word has length 319 [2020-10-27 06:08:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:06,723 INFO L481 AbstractCegarLoop]: Abstraction has 1849 states and 2850 transitions. [2020-10-27 06:08:06,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2850 transitions. [2020-10-27 06:08:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 06:08:06,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:06,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:06,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:08:06,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:06,735 INFO L82 PathProgramCache]: Analyzing trace with hash -122341413, now seen corresponding path program 1 times [2020-10-27 06:08:06,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:06,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63544511] [2020-10-27 06:08:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:06,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:08,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:09,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:11,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:11,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 06:08:11,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:08:11,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 06:08:11,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:11,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 06:08:11,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:13,025 WARN L193 SmtUtils]: Spent 966.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:08:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:13,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:13,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:13,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:13,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:08:13,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:08:13,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63544511] [2020-10-27 06:08:13,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:13,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:13,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103141531] [2020-10-27 06:08:13,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:13,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:13,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:13,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:13,327 INFO L87 Difference]: Start difference. First operand 1849 states and 2850 transitions. Second operand 5 states. [2020-10-27 06:08:23,089 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:08:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:25,844 INFO L93 Difference]: Finished difference Result 5391 states and 8280 transitions. [2020-10-27 06:08:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:25,845 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 06:08:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:25,870 INFO L225 Difference]: With dead ends: 5391 [2020-10-27 06:08:25,870 INFO L226 Difference]: Without dead ends: 3620 [2020-10-27 06:08:25,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2020-10-27 06:08:26,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3516. [2020-10-27 06:08:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3516 states. [2020-10-27 06:08:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 5392 transitions. [2020-10-27 06:08:26,068 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 5392 transitions. Word has length 321 [2020-10-27 06:08:26,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:26,070 INFO L481 AbstractCegarLoop]: Abstraction has 3516 states and 5392 transitions. [2020-10-27 06:08:26,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 5392 transitions. [2020-10-27 06:08:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 06:08:26,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:26,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:26,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:08:26,082 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:26,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:26,087 INFO L82 PathProgramCache]: Analyzing trace with hash 105957504, now seen corresponding path program 1 times [2020-10-27 06:08:26,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:26,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618736992] [2020-10-27 06:08:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:26,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:27,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:28,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:29,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:31,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:31,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 06:08:31,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:08:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 06:08:31,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 06:08:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:32,232 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:08:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:32,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:32,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:32,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:32,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:08:32,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:32,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:32,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:32,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:08:32,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618736992] [2020-10-27 06:08:32,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:32,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:32,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236863016] [2020-10-27 06:08:32,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:32,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:32,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:32,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:32,526 INFO L87 Difference]: Start difference. First operand 3516 states and 5392 transitions. Second operand 5 states. [2020-10-27 06:08:41,841 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:08:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:08:44,429 INFO L93 Difference]: Finished difference Result 10117 states and 15426 transitions. [2020-10-27 06:08:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:08:44,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-27 06:08:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:08:44,464 INFO L225 Difference]: With dead ends: 10117 [2020-10-27 06:08:44,464 INFO L226 Difference]: Without dead ends: 6787 [2020-10-27 06:08:44,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:08:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6787 states. [2020-10-27 06:08:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6787 to 6683. [2020-10-27 06:08:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6683 states. [2020-10-27 06:08:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6683 states to 6683 states and 10157 transitions. [2020-10-27 06:08:44,843 INFO L78 Accepts]: Start accepts. Automaton has 6683 states and 10157 transitions. Word has length 323 [2020-10-27 06:08:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:08:44,844 INFO L481 AbstractCegarLoop]: Abstraction has 6683 states and 10157 transitions. [2020-10-27 06:08:44,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:08:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6683 states and 10157 transitions. [2020-10-27 06:08:44,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 06:08:44,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:44,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:44,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:08:44,862 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:44,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1508189737, now seen corresponding path program 1 times [2020-10-27 06:08:44,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:44,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493828672] [2020-10-27 06:08:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:45,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:46,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:47,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:48,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:49,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:49,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 06:08:49,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:08:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 06:08:49,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:08:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:08:49,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 06:08:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:51,145 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:08:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:51,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:51,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:51,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:51,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:08:51,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:51,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:08:51,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493828672] [2020-10-27 06:08:51,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:51,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:08:51,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168103013] [2020-10-27 06:08:51,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:08:51,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:51,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:08:51,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:08:51,433 INFO L87 Difference]: Start difference. First operand 6683 states and 10157 transitions. Second operand 5 states. [2020-10-27 06:09:00,967 WARN L193 SmtUtils]: Spent 986.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:09:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:03,610 INFO L93 Difference]: Finished difference Result 19619 states and 29723 transitions. [2020-10-27 06:09:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:03,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-27 06:09:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:03,668 INFO L225 Difference]: With dead ends: 19619 [2020-10-27 06:09:03,668 INFO L226 Difference]: Without dead ends: 13050 [2020-10-27 06:09:03,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:03,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13050 states. [2020-10-27 06:09:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13050 to 12946. [2020-10-27 06:09:04,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12946 states. [2020-10-27 06:09:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12946 states to 12946 states and 19527 transitions. [2020-10-27 06:09:04,375 INFO L78 Accepts]: Start accepts. Automaton has 12946 states and 19527 transitions. Word has length 325 [2020-10-27 06:09:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:04,380 INFO L481 AbstractCegarLoop]: Abstraction has 12946 states and 19527 transitions. [2020-10-27 06:09:04,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12946 states and 19527 transitions. [2020-10-27 06:09:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 06:09:04,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:04,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:04,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:09:04,414 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:04,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1076562626, now seen corresponding path program 1 times [2020-10-27 06:09:04,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:04,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043842406] [2020-10-27 06:09:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:04,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:04,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:04,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:09,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:09,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 06:09:09,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:09:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 06:09:09,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 06:09:09,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:10,627 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:10,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:10,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 06:09:10,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:10,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043842406] [2020-10-27 06:09:10,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:10,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:10,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314303042] [2020-10-27 06:09:10,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:10,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:10,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:10,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:10,853 INFO L87 Difference]: Start difference. First operand 12946 states and 19527 transitions. Second operand 5 states. [2020-10-27 06:09:20,364 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:09:23,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:23,285 INFO L93 Difference]: Finished difference Result 38239 states and 57552 transitions. [2020-10-27 06:09:23,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:23,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-27 06:09:23,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:23,345 INFO L225 Difference]: With dead ends: 38239 [2020-10-27 06:09:23,345 INFO L226 Difference]: Without dead ends: 25387 [2020-10-27 06:09:23,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:23,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25387 states. [2020-10-27 06:09:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25387 to 25293. [2020-10-27 06:09:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25293 states. [2020-10-27 06:09:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25293 states to 25293 states and 37837 transitions. [2020-10-27 06:09:24,541 INFO L78 Accepts]: Start accepts. Automaton has 25293 states and 37837 transitions. Word has length 327 [2020-10-27 06:09:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:24,542 INFO L481 AbstractCegarLoop]: Abstraction has 25293 states and 37837 transitions. [2020-10-27 06:09:24,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 25293 states and 37837 transitions. [2020-10-27 06:09:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 06:09:24,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:24,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:24,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:09:24,598 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:24,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:24,599 INFO L82 PathProgramCache]: Analyzing trace with hash 41609076, now seen corresponding path program 1 times [2020-10-27 06:09:24,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:24,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985628950] [2020-10-27 06:09:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:29,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:29,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 06:09:29,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:09:29,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 06:09:29,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:29,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 06:09:29,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:30,757 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:30,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:30,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:30,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:30,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:09:30,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:30,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985628950] [2020-10-27 06:09:30,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:30,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:30,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042931449] [2020-10-27 06:09:30,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:30,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:30,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:30,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:30,915 INFO L87 Difference]: Start difference. First operand 25293 states and 37837 transitions. Second operand 5 states. [2020-10-27 06:09:41,718 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:09:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:44,751 INFO L93 Difference]: Finished difference Result 74936 states and 111935 transitions. [2020-10-27 06:09:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:44,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2020-10-27 06:09:44,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:44,860 INFO L225 Difference]: With dead ends: 74936 [2020-10-27 06:09:44,860 INFO L226 Difference]: Without dead ends: 49708 [2020-10-27 06:09:44,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49708 states. [2020-10-27 06:09:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49708 to 49596. [2020-10-27 06:09:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49596 states. [2020-10-27 06:09:47,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49596 states to 49596 states and 73660 transitions. [2020-10-27 06:09:47,265 INFO L78 Accepts]: Start accepts. Automaton has 49596 states and 73660 transitions. Word has length 329 [2020-10-27 06:09:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:47,265 INFO L481 AbstractCegarLoop]: Abstraction has 49596 states and 73660 transitions. [2020-10-27 06:09:47,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 49596 states and 73660 transitions. [2020-10-27 06:09:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-27 06:09:47,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:47,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:47,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:09:47,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:47,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:47,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1160988762, now seen corresponding path program 1 times [2020-10-27 06:09:47,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:47,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943146328] [2020-10-27 06:09:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:52,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:52,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-27 06:09:52,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:09:52,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 06:09:52,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 06:09:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:53,536 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:09:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:53,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:53,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:53,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:53,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:09:53,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:53,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:53,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943146328] [2020-10-27 06:09:53,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:53,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:53,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14136012] [2020-10-27 06:09:53,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:53,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:53,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:53,729 INFO L87 Difference]: Start difference. First operand 49596 states and 73660 transitions. Second operand 5 states. [2020-10-27 06:10:06,352 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:10:10,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:10,001 INFO L93 Difference]: Finished difference Result 145864 states and 216114 transitions. [2020-10-27 06:10:10,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:10,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-27 06:10:10,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:10,161 INFO L225 Difference]: With dead ends: 145864 [2020-10-27 06:10:10,162 INFO L226 Difference]: Without dead ends: 97048 [2020-10-27 06:10:10,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97048 states. [2020-10-27 06:10:15,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97048 to 96936. [2020-10-27 06:10:15,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96936 states. [2020-10-27 06:10:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96936 states to 96936 states and 142728 transitions. [2020-10-27 06:10:15,265 INFO L78 Accepts]: Start accepts. Automaton has 96936 states and 142728 transitions. Word has length 331 [2020-10-27 06:10:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:15,265 INFO L481 AbstractCegarLoop]: Abstraction has 96936 states and 142728 transitions. [2020-10-27 06:10:15,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 96936 states and 142728 transitions. [2020-10-27 06:10:15,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-27 06:10:15,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:15,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:15,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:10:15,387 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:15,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:15,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1721299744, now seen corresponding path program 1 times [2020-10-27 06:10:15,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:15,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912843883] [2020-10-27 06:10:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:15,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:15,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:16,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:16,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:20,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:20,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-27 06:10:20,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:10:20,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 06:10:20,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:20,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:20,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:20,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 06:10:20,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:21,529 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:10:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:21,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:21,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:21,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:21,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:21,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:10:21,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:21,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:21,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:21,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:21,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:21,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912843883] [2020-10-27 06:10:21,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:21,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:21,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577818087] [2020-10-27 06:10:21,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:21,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:21,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:21,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:21,704 INFO L87 Difference]: Start difference. First operand 96936 states and 142728 transitions. Second operand 5 states. [2020-10-27 06:10:37,253 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification that was a NOOP. DAG size: 364 [2020-10-27 06:10:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:42,413 INFO L93 Difference]: Finished difference Result 284872 states and 418494 transitions. [2020-10-27 06:10:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:42,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-10-27 06:10:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:42,707 INFO L225 Difference]: With dead ends: 284872 [2020-10-27 06:10:42,708 INFO L226 Difference]: Without dead ends: 189344 [2020-10-27 06:10:42,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189344 states. [2020-10-27 06:10:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189344 to 189232. [2020-10-27 06:10:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189232 states. [2020-10-27 06:10:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189232 states to 189232 states and 276334 transitions. [2020-10-27 06:10:52,988 INFO L78 Accepts]: Start accepts. Automaton has 189232 states and 276334 transitions. Word has length 333 [2020-10-27 06:10:52,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:52,988 INFO L481 AbstractCegarLoop]: Abstraction has 189232 states and 276334 transitions. [2020-10-27 06:10:52,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 189232 states and 276334 transitions. [2020-10-27 06:10:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-27 06:10:53,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:53,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:53,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:10:53,147 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:53,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1435667459, now seen corresponding path program 1 times [2020-10-27 06:10:53,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:53,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933368843] [2020-10-27 06:10:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:58,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-27 06:10:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:10:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 06:10:58,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 06:10:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:59,330 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:10:59,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:59,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:59,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:59,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 06:10:59,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:59,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:59,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933368843] [2020-10-27 06:10:59,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:59,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:59,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91846556] [2020-10-27 06:10:59,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:59,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:59,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:59,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:59,514 INFO L87 Difference]: Start difference. First operand 189232 states and 276334 transitions. Second operand 5 states.