/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:27:10,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:27:10,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:27:10,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:27:10,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:27:10,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:27:10,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:27:10,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:27:10,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:27:10,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:27:10,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:27:10,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:27:10,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:27:10,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:27:10,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:27:10,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:27:10,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:27:10,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:27:10,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:27:10,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:27:10,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:27:10,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:27:10,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:27:10,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:27:10,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:27:10,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:27:10,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:27:10,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:27:10,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:27:10,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:27:10,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:27:10,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:27:10,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:27:10,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:27:10,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:27:10,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:27:10,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:27:10,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:27:10,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:27:10,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:27:10,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:27:10,220 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 23:27:10,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:27:10,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:27:10,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:27:10,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:27:10,257 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:27:10,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:27:10,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:27:10,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:27:10,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:27:10,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:27:10,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:27:10,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:27:10,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:27:10,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:27:10,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:27:10,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:27:10,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:27:10,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:27:10,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:27:10,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:27:10,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:27:10,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:27:10,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:27:10,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:27:10,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:27:10,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:27:10,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:27:10,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:27:10,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:27:10,263 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:27:10,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:27:10,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:27:10,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:27:10,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:27:10,709 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:27:10,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 23:27:10,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb9bbe2d3/f387f01da7c54582b45b79cd77145dc5/FLAGb628c85bf [2020-10-27 23:27:11,621 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:27:11,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 23:27:11,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb9bbe2d3/f387f01da7c54582b45b79cd77145dc5/FLAGb628c85bf [2020-10-27 23:27:11,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb9bbe2d3/f387f01da7c54582b45b79cd77145dc5 [2020-10-27 23:27:11,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:27:11,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:27:11,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:27:11,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:27:11,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:27:11,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:27:11" (1/1) ... [2020-10-27 23:27:11,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4330c78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:11, skipping insertion in model container [2020-10-27 23:27:11,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:27:11" (1/1) ... [2020-10-27 23:27:11,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:27:11,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:27:13,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:27:13,385 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:27:14,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:27:14,238 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:27:14,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14 WrapperNode [2020-10-27 23:27:14,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:27:14,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:27:14,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:27:14,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:27:14,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (1/1) ... [2020-10-27 23:27:14,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (1/1) ... [2020-10-27 23:27:14,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (1/1) ... [2020-10-27 23:27:14,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (1/1) ... [2020-10-27 23:27:14,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (1/1) ... [2020-10-27 23:27:14,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (1/1) ... [2020-10-27 23:27:14,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (1/1) ... [2020-10-27 23:27:14,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:27:14,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:27:14,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:27:14,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:27:14,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (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 23:27:14,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:27:14,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:27:14,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:27:14,560 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:27:14,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:27:14,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:27:14,561 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:27:14,561 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:27:14,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:27:14,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:27:14,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:27:14,562 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:27:14,562 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:27:14,562 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:27:14,562 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:27:14,562 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:27:14,562 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:27:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:27:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:27:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:27:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:27:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:27:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:27:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:27:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:27:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:27:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:27:14,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:27:17,906 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:27:17,907 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:27:17,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:27:17 BoogieIcfgContainer [2020-10-27 23:27:17,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:27:17,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:27:17,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:27:17,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:27:17,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:27:11" (1/3) ... [2020-10-27 23:27:17,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ae41d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:27:17, skipping insertion in model container [2020-10-27 23:27:17,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:27:14" (2/3) ... [2020-10-27 23:27:17,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ae41d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:27:17, skipping insertion in model container [2020-10-27 23:27:17,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:27:17" (3/3) ... [2020-10-27 23:27:17,920 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-27 23:27:17,932 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:27:17,939 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:27:17,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:27:17,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:27:17,999 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:27:17,999 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:27:17,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:27:18,000 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:27:18,000 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:27:18,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:27:18,000 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:27:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states. [2020-10-27 23:27:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-27 23:27:18,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:18,080 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] [2020-10-27 23:27:18,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:18,086 INFO L82 PathProgramCache]: Analyzing trace with hash 191998976, now seen corresponding path program 1 times [2020-10-27 23:27:18,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:18,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985594432] [2020-10-27 23:27:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:21,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:21,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:21,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:22,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:23,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:23,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:23,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 23:27:23,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:27:23,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 23:27:23,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:27:23,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 23:27:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-27 23:27:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:27:24,891 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:27:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:24,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:24,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:24,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 23:27:24,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:24,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:27:25,204 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 23:27:25,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985594432] [2020-10-27 23:27:25,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:25,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:27:25,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961360691] [2020-10-27 23:27:25,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:27:25,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:25,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:27:25,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:27:25,241 INFO L87 Difference]: Start difference. First operand 902 states. Second operand 4 states. [2020-10-27 23:27:26,185 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-10-27 23:27:33,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:27:33,479 INFO L93 Difference]: Finished difference Result 1567 states and 2816 transitions. [2020-10-27 23:27:33,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:27:33,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2020-10-27 23:27:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:27:33,517 INFO L225 Difference]: With dead ends: 1567 [2020-10-27 23:27:33,518 INFO L226 Difference]: Without dead ends: 1317 [2020-10-27 23:27:33,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:27:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-10-27 23:27:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1314. [2020-10-27 23:27:33,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-27 23:27:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 2040 transitions. [2020-10-27 23:27:33,708 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 2040 transitions. Word has length 291 [2020-10-27 23:27:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:27:33,715 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 2040 transitions. [2020-10-27 23:27:33,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:27:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 2040 transitions. [2020-10-27 23:27:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-27 23:27:33,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:33,733 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] [2020-10-27 23:27:33,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:27:33,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:33,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:33,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1809967934, now seen corresponding path program 1 times [2020-10-27 23:27:33,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:33,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49554193] [2020-10-27 23:27:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:35,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:35,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:37,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:38,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:38,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 23:27:38,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:27:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-27 23:27:38,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:27:38,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-27 23:27:38,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 23:27:38,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:39,797 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:27:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:39,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:39,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:39,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:39,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:27:39,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:27:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:27:40,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49554193] [2020-10-27 23:27:40,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:40,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:27:40,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794119286] [2020-10-27 23:27:40,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:27:40,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:40,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:27:40,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:27:40,106 INFO L87 Difference]: Start difference. First operand 1314 states and 2040 transitions. Second operand 4 states. [2020-10-27 23:27:40,753 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2020-10-27 23:27:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:27:46,780 INFO L93 Difference]: Finished difference Result 2547 states and 3991 transitions. [2020-10-27 23:27:46,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:27:46,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2020-10-27 23:27:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:27:46,797 INFO L225 Difference]: With dead ends: 2547 [2020-10-27 23:27:46,797 INFO L226 Difference]: Without dead ends: 2233 [2020-10-27 23:27:46,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:27:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2233 states. [2020-10-27 23:27:46,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2233 to 2230. [2020-10-27 23:27:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2020-10-27 23:27:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3475 transitions. [2020-10-27 23:27:46,922 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3475 transitions. Word has length 291 [2020-10-27 23:27:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:27:46,924 INFO L481 AbstractCegarLoop]: Abstraction has 2230 states and 3475 transitions. [2020-10-27 23:27:46,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:27:46,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3475 transitions. [2020-10-27 23:27:46,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-27 23:27:46,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:27:46,937 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] [2020-10-27 23:27:46,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:27:46,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:27:46,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:27:46,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1820464999, now seen corresponding path program 1 times [2020-10-27 23:27:46,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:27:46,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514884209] [2020-10-27 23:27:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:27:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:47,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:48,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:48,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:49,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:52,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:52,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 23:27:52,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 23:27:52,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 23:27:52,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:27:52,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:27:52,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 23:27:52,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:53,009 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:27:53,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:27:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:27:53,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:27:53,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:27:53,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:27:53,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:27:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:27:53,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:27:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:27:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:27:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:27:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:27:53,252 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 23:27:53,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514884209] [2020-10-27 23:27:53,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:27:53,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:27:53,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159163339] [2020-10-27 23:27:53,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:27:53,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:27:53,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:27:53,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:27:53,260 INFO L87 Difference]: Start difference. First operand 2230 states and 3475 transitions. Second operand 5 states. [2020-10-27 23:28:01,503 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:28:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:28:03,514 INFO L93 Difference]: Finished difference Result 6584 states and 10252 transitions. [2020-10-27 23:28:03,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:28:03,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 291 [2020-10-27 23:28:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:28:03,538 INFO L225 Difference]: With dead ends: 6584 [2020-10-27 23:28:03,538 INFO L226 Difference]: Without dead ends: 4367 [2020-10-27 23:28:03,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:28:03,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2020-10-27 23:28:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 4221. [2020-10-27 23:28:03,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4221 states. [2020-10-27 23:28:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4221 states to 4221 states and 6537 transitions. [2020-10-27 23:28:03,732 INFO L78 Accepts]: Start accepts. Automaton has 4221 states and 6537 transitions. Word has length 291 [2020-10-27 23:28:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:28:03,732 INFO L481 AbstractCegarLoop]: Abstraction has 4221 states and 6537 transitions. [2020-10-27 23:28:03,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:28:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4221 states and 6537 transitions. [2020-10-27 23:28:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-27 23:28:03,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:28:03,747 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] [2020-10-27 23:28:03,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:28:03,748 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:28:03,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:28:03,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1711957218, now seen corresponding path program 1 times [2020-10-27 23:28:03,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:28:03,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114242211] [2020-10-27 23:28:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:28:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:05,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:08,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-27 23:28:08,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:28:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 23:28:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:28:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:28:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 23:28:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:09,637 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:28:09,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:28:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:09,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:28:09,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:28:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:28:09,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:28:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:28:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:28:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:09,797 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 23:28:09,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114242211] [2020-10-27 23:28:09,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:28:09,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:28:09,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954298156] [2020-10-27 23:28:09,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:28:09,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:28:09,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:28:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:28:09,801 INFO L87 Difference]: Start difference. First operand 4221 states and 6537 transitions. Second operand 4 states. [2020-10-27 23:28:17,975 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-27 23:28:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:28:20,029 INFO L93 Difference]: Finished difference Result 12344 states and 19068 transitions. [2020-10-27 23:28:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:28:20,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2020-10-27 23:28:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:28:20,072 INFO L225 Difference]: With dead ends: 12344 [2020-10-27 23:28:20,072 INFO L226 Difference]: Without dead ends: 8263 [2020-10-27 23:28:20,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:28:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2020-10-27 23:28:20,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 8125. [2020-10-27 23:28:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8125 states. [2020-10-27 23:28:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8125 states to 8125 states and 12501 transitions. [2020-10-27 23:28:20,444 INFO L78 Accepts]: Start accepts. Automaton has 8125 states and 12501 transitions. Word has length 293 [2020-10-27 23:28:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:28:20,445 INFO L481 AbstractCegarLoop]: Abstraction has 8125 states and 12501 transitions. [2020-10-27 23:28:20,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:28:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8125 states and 12501 transitions. [2020-10-27 23:28:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-27 23:28:20,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:28:20,465 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] [2020-10-27 23:28:20,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:28:20,465 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:28:20,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:28:20,466 INFO L82 PathProgramCache]: Analyzing trace with hash 626962873, now seen corresponding path program 1 times [2020-10-27 23:28:20,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:28:20,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664161185] [2020-10-27 23:28:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:28:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:20,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:21,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:21,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:23,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:25,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-27 23:28:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:28:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:28:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:28:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 23:28:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:28:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:26,351 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:28:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:28:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:26,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:26,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:28:26,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:28:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 23:28:26,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:28:26,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:28:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:28:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:26,483 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 23:28:26,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664161185] [2020-10-27 23:28:26,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:28:26,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:28:26,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506153861] [2020-10-27 23:28:26,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:28:26,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:28:26,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:28:26,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:28:26,486 INFO L87 Difference]: Start difference. First operand 8125 states and 12501 transitions. Second operand 4 states. [2020-10-27 23:28:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:28:36,348 INFO L93 Difference]: Finished difference Result 24293 states and 37367 transitions. [2020-10-27 23:28:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:28:36,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2020-10-27 23:28:36,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:28:36,415 INFO L225 Difference]: With dead ends: 24293 [2020-10-27 23:28:36,416 INFO L226 Difference]: Without dead ends: 16211 [2020-10-27 23:28:36,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:28:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16211 states. [2020-10-27 23:28:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16211 to 8138. [2020-10-27 23:28:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8138 states. [2020-10-27 23:28:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8138 states to 8138 states and 12517 transitions. [2020-10-27 23:28:36,934 INFO L78 Accepts]: Start accepts. Automaton has 8138 states and 12517 transitions. Word has length 293 [2020-10-27 23:28:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:28:36,934 INFO L481 AbstractCegarLoop]: Abstraction has 8138 states and 12517 transitions. [2020-10-27 23:28:36,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:28:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 8138 states and 12517 transitions. [2020-10-27 23:28:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-27 23:28:36,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:28:36,955 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] [2020-10-27 23:28:36,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:28:36,955 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:28:36,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:28:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash 137525457, now seen corresponding path program 1 times [2020-10-27 23:28:36,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:28:36,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406186353] [2020-10-27 23:28:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:28:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:38,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:42,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:42,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 23:28:42,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:28:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-27 23:28:42,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:28:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:28:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 23:28:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:42,743 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:28:42,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:28:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:42,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:42,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:28:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:28:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:28:42,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:28:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:28:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:28:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:42,926 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 23:28:42,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406186353] [2020-10-27 23:28:42,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:28:42,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:28:42,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418995159] [2020-10-27 23:28:42,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:28:42,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:28:42,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:28:42,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:28:42,929 INFO L87 Difference]: Start difference. First operand 8138 states and 12517 transitions. Second operand 4 states. [2020-10-27 23:28:51,288 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2020-10-27 23:28:52,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:28:52,678 INFO L93 Difference]: Finished difference Result 23034 states and 35349 transitions. [2020-10-27 23:28:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:28:52,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 294 [2020-10-27 23:28:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:28:52,713 INFO L225 Difference]: With dead ends: 23034 [2020-10-27 23:28:52,713 INFO L226 Difference]: Without dead ends: 15079 [2020-10-27 23:28:52,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:28:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15079 states. [2020-10-27 23:28:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15079 to 14949. [2020-10-27 23:28:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14949 states. [2020-10-27 23:28:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14949 states to 14949 states and 22812 transitions. [2020-10-27 23:28:53,265 INFO L78 Accepts]: Start accepts. Automaton has 14949 states and 22812 transitions. Word has length 294 [2020-10-27 23:28:53,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:28:53,266 INFO L481 AbstractCegarLoop]: Abstraction has 14949 states and 22812 transitions. [2020-10-27 23:28:53,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:28:53,266 INFO L276 IsEmpty]: Start isEmpty. Operand 14949 states and 22812 transitions. [2020-10-27 23:28:53,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-27 23:28:53,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:28:53,297 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] [2020-10-27 23:28:53,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:28:53,297 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:28:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:28:53,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1026077932, now seen corresponding path program 1 times [2020-10-27 23:28:53,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:28:53,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618433141] [2020-10-27 23:28:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:28:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:53,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:54,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:55,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:56,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:58,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:58,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-27 23:28:58,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:28:58,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:28:58,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:58,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:28:58,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:28:58,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 23:28:58,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:59,078 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:28:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:28:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:28:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:28:59,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:28:59,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:28:59,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:28:59,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 23:28:59,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:28:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:28:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:28:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:28:59,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:28:59,295 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 23:28:59,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618433141] [2020-10-27 23:28:59,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:28:59,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:28:59,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661302291] [2020-10-27 23:28:59,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:28:59,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:28:59,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:28:59,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:28:59,297 INFO L87 Difference]: Start difference. First operand 14949 states and 22812 transitions. Second operand 5 states. [2020-10-27 23:29:07,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:29:07,489 INFO L93 Difference]: Finished difference Result 43063 states and 65499 transitions. [2020-10-27 23:29:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:29:07,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2020-10-27 23:29:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:29:07,542 INFO L225 Difference]: With dead ends: 43063 [2020-10-27 23:29:07,543 INFO L226 Difference]: Without dead ends: 28603 [2020-10-27 23:29:07,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:29:07,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28603 states. [2020-10-27 23:29:08,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28603 to 15198. [2020-10-27 23:29:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15198 states. [2020-10-27 23:29:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15198 states to 15198 states and 23231 transitions. [2020-10-27 23:29:08,322 INFO L78 Accepts]: Start accepts. Automaton has 15198 states and 23231 transitions. Word has length 294 [2020-10-27 23:29:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:29:08,322 INFO L481 AbstractCegarLoop]: Abstraction has 15198 states and 23231 transitions. [2020-10-27 23:29:08,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:29:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15198 states and 23231 transitions. [2020-10-27 23:29:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-27 23:29:08,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:29:08,346 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] [2020-10-27 23:29:08,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:29:08,346 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:29:08,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:29:08,347 INFO L82 PathProgramCache]: Analyzing trace with hash 476750104, now seen corresponding path program 1 times [2020-10-27 23:29:08,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:29:08,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108404165] [2020-10-27 23:29:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:29:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:08,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:08,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:08,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:08,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:09,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:09,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:09,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:09,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:09,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:10,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:13,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:29:13,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 23:29:13,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:29:13,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 23:29:13,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:29:13,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:29:13,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 23:29:13,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:29:13,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:29:14,074 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:29:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:29:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:14,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:14,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:29:14,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:29:14,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:29:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:29:14,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:29:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:29:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:29:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:29:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:29:14,170 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 23:29:14,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108404165] [2020-10-27 23:29:14,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:29:14,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:29:14,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060179221] [2020-10-27 23:29:14,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:29:14,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:29:14,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:29:14,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:29:14,173 INFO L87 Difference]: Start difference. First operand 15198 states and 23231 transitions. Second operand 4 states. [2020-10-27 23:29:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:29:25,221 INFO L93 Difference]: Finished difference Result 44078 states and 67019 transitions. [2020-10-27 23:29:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:29:25,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2020-10-27 23:29:25,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:29:25,278 INFO L225 Difference]: With dead ends: 44078 [2020-10-27 23:29:25,278 INFO L226 Difference]: Without dead ends: 29641 [2020-10-27 23:29:25,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:29:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29641 states. [2020-10-27 23:29:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29641 to 15303. [2020-10-27 23:29:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15303 states. [2020-10-27 23:29:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15303 states to 15303 states and 23365 transitions. [2020-10-27 23:29:26,563 INFO L78 Accepts]: Start accepts. Automaton has 15303 states and 23365 transitions. Word has length 296 [2020-10-27 23:29:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:29:26,563 INFO L481 AbstractCegarLoop]: Abstraction has 15303 states and 23365 transitions. [2020-10-27 23:29:26,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:29:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 15303 states and 23365 transitions. [2020-10-27 23:29:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-27 23:29:26,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:29:26,579 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] [2020-10-27 23:29:26,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:29:26,580 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:29:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:29:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash 558484269, now seen corresponding path program 1 times [2020-10-27 23:29:26,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:29:26,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930211517] [2020-10-27 23:29:26,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:29:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:26,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:27,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:27,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:28,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:31,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:29:31,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-27 23:29:31,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 23:29:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 23:29:31,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:29:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:29:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 23:29:31,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:29:31,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:29:32,312 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:29:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:29:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:32,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:32,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:29:32,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:29:32,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:29:32,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:29:32,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:29:32,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:29:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:29:32,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:29:32,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:29:32,474 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 23:29:32,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930211517] [2020-10-27 23:29:32,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:29:32,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:29:32,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087276296] [2020-10-27 23:29:32,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:29:32,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:29:32,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:29:32,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:29:32,477 INFO L87 Difference]: Start difference. First operand 15303 states and 23365 transitions. Second operand 4 states. [2020-10-27 23:29:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:29:39,712 INFO L93 Difference]: Finished difference Result 44286 states and 67288 transitions. [2020-10-27 23:29:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:29:39,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 297 [2020-10-27 23:29:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:29:39,759 INFO L225 Difference]: With dead ends: 44286 [2020-10-27 23:29:39,760 INFO L226 Difference]: Without dead ends: 29804 [2020-10-27 23:29:39,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:29:39,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29804 states. [2020-10-27 23:29:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29804 to 15444. [2020-10-27 23:29:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15444 states. [2020-10-27 23:29:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15444 states to 15444 states and 23538 transitions. [2020-10-27 23:29:40,844 INFO L78 Accepts]: Start accepts. Automaton has 15444 states and 23538 transitions. Word has length 297 [2020-10-27 23:29:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:29:40,844 INFO L481 AbstractCegarLoop]: Abstraction has 15444 states and 23538 transitions. [2020-10-27 23:29:40,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:29:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 15444 states and 23538 transitions. [2020-10-27 23:29:40,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-27 23:29:40,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:29:40,863 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] [2020-10-27 23:29:40,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:29:40,863 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:29:40,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:29:40,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1500822181, now seen corresponding path program 1 times [2020-10-27 23:29:40,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:29:40,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415214263] [2020-10-27 23:29:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:29:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:42,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:45,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:29:45,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-27 23:29:45,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:29:45,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 23:29:45,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:29:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:29:45,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 23:29:45,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 23:29:45,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:29:46,618 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:29:46,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:29:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:46,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:29:46,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:29:46,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:29:46,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:29:46,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:29:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:29:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:29:46,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:29:46,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:29:46,735 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 23:29:46,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415214263] [2020-10-27 23:29:46,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:29:46,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:29:46,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048247625] [2020-10-27 23:29:46,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:29:46,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:29:46,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:29:46,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:29:46,738 INFO L87 Difference]: Start difference. First operand 15444 states and 23538 transitions. Second operand 4 states. [2020-10-27 23:29:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:29:54,045 INFO L93 Difference]: Finished difference Result 46032 states and 70106 transitions. [2020-10-27 23:29:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:29:54,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 298 [2020-10-27 23:29:54,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:29:54,082 INFO L225 Difference]: With dead ends: 46032 [2020-10-27 23:29:54,083 INFO L226 Difference]: Without dead ends: 30626 [2020-10-27 23:29:54,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:29:54,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30626 states. [2020-10-27 23:29:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30626 to 15461. [2020-10-27 23:29:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15461 states. [2020-10-27 23:29:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15461 states to 15461 states and 23560 transitions. [2020-10-27 23:29:55,254 INFO L78 Accepts]: Start accepts. Automaton has 15461 states and 23560 transitions. Word has length 298 [2020-10-27 23:29:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:29:55,254 INFO L481 AbstractCegarLoop]: Abstraction has 15461 states and 23560 transitions. [2020-10-27 23:29:55,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:29:55,254 INFO L276 IsEmpty]: Start isEmpty. Operand 15461 states and 23560 transitions. [2020-10-27 23:29:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-27 23:29:55,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:29:55,266 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] [2020-10-27 23:29:55,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:29:55,267 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:29:55,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:29:55,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1658528663, now seen corresponding path program 1 times [2020-10-27 23:29:55,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:29:55,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8725172] [2020-10-27 23:29:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:29:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:29:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:55,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:57,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:57,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:29:57,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:00,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:00,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-27 23:30:00,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 23:30:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 23:30:00,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:30:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:30:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 23:30:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:01,143 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:30:01,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:30:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:01,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:01,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:30:01,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:30:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:30:01,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:30:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:30:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:30:01,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:01,288 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 23:30:01,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8725172] [2020-10-27 23:30:01,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:30:01,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:30:01,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505587377] [2020-10-27 23:30:01,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:30:01,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:30:01,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:30:01,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:30:01,290 INFO L87 Difference]: Start difference. First operand 15461 states and 23560 transitions. Second operand 5 states. [2020-10-27 23:30:10,842 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 23:30:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:30:13,661 INFO L93 Difference]: Finished difference Result 45234 states and 68756 transitions. [2020-10-27 23:30:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:30:13,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-27 23:30:13,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:30:13,691 INFO L225 Difference]: With dead ends: 45234 [2020-10-27 23:30:13,692 INFO L226 Difference]: Without dead ends: 30108 [2020-10-27 23:30:13,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:30:13,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30108 states. [2020-10-27 23:30:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30108 to 29866. [2020-10-27 23:30:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29866 states. [2020-10-27 23:30:15,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29866 states to 29866 states and 45164 transitions. [2020-10-27 23:30:15,533 INFO L78 Accepts]: Start accepts. Automaton has 29866 states and 45164 transitions. Word has length 299 [2020-10-27 23:30:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:30:15,533 INFO L481 AbstractCegarLoop]: Abstraction has 29866 states and 45164 transitions. [2020-10-27 23:30:15,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:30:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 29866 states and 45164 transitions. [2020-10-27 23:30:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-27 23:30:15,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:30:15,555 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] [2020-10-27 23:30:15,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:30:15,555 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:30:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:30:15,556 INFO L82 PathProgramCache]: Analyzing trace with hash 752188426, now seen corresponding path program 1 times [2020-10-27 23:30:15,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:30:15,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900503253] [2020-10-27 23:30:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:30:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:16,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:17,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:18,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:20,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:20,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-27 23:30:20,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 23:30:20,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-27 23:30:20,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:30:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 23:30:20,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:30:20,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:21,547 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:30:21,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:30:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:21,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:21,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:21,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:30:21,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:30:21,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:30:21,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:21,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:30:21,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:30:21,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:30:21,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:21,649 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 23:30:21,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900503253] [2020-10-27 23:30:21,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:30:21,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:30:21,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963076621] [2020-10-27 23:30:21,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:30:21,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:30:21,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:30:21,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:30:21,651 INFO L87 Difference]: Start difference. First operand 29866 states and 45164 transitions. Second operand 5 states. [2020-10-27 23:30:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:30:36,209 INFO L93 Difference]: Finished difference Result 87945 states and 132792 transitions. [2020-10-27 23:30:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:30:36,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-10-27 23:30:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:30:36,268 INFO L225 Difference]: With dead ends: 87945 [2020-10-27 23:30:36,268 INFO L226 Difference]: Without dead ends: 59465 [2020-10-27 23:30:36,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:30:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59465 states. [2020-10-27 23:30:38,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59465 to 30982. [2020-10-27 23:30:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30982 states. [2020-10-27 23:30:38,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30982 states to 30982 states and 47051 transitions. [2020-10-27 23:30:38,523 INFO L78 Accepts]: Start accepts. Automaton has 30982 states and 47051 transitions. Word has length 301 [2020-10-27 23:30:38,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:30:38,523 INFO L481 AbstractCegarLoop]: Abstraction has 30982 states and 47051 transitions. [2020-10-27 23:30:38,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:30:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 30982 states and 47051 transitions. [2020-10-27 23:30:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-27 23:30:38,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:30:38,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:38,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:30:38,557 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:30:38,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:30:38,558 INFO L82 PathProgramCache]: Analyzing trace with hash -198641012, now seen corresponding path program 1 times [2020-10-27 23:30:38,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:30:38,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538190466] [2020-10-27 23:30:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:30:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:38,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:39,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:40,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:40,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:40,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 23:30:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:44,287 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2020-10-27 23:30:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:30:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:30:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:30:44,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:30:44,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:30:44,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:30:44,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:30:44,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:30:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:30:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:30:44,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:30:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:30:44,453 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 23:30:44,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538190466] [2020-10-27 23:30:44,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:30:44,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:30:44,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38866690] [2020-10-27 23:30:44,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:30:44,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:30:44,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:30:44,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:30:44,455 INFO L87 Difference]: Start difference. First operand 30982 states and 47051 transitions. Second operand 4 states.