/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:58:26,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:58:26,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:58:26,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:58:26,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:58:26,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:58:26,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:58:26,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:58:26,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:58:26,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:58:26,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:58:26,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:58:26,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:58:26,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:58:26,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:58:26,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:58:26,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:58:26,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:58:26,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:58:26,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:58:26,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:58:26,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:58:26,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:58:26,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:58:26,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:58:26,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:58:26,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:58:26,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:58:26,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:58:26,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:58:26,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:58:26,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:58:26,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:58:26,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:58:26,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:58:26,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:58:26,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:58:26,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:58:26,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:58:26,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:58:26,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:58:26,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:58:26,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:58:26,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:58:26,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:58:26,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:58:26,284 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:58:26,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:58:26,285 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:58:26,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:58:26,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:58:26,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:58:26,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:58:26,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:58:26,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:58:26,287 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:58:26,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:58:26,287 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:58:26,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:58:26,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:58:26,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:58:26,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:58:26,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:58:26,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:58:26,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:58:26,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:58:26,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:58:26,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:58:26,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:58:26,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:58:26,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:58:26,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:58:26,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:58:26,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:58:26,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:58:26,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:58:26,770 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:58:26,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:58:26,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b771d26f/5f0049b9c1ec44a5aac441f5d49c4c15/FLAG759078c0d [2020-10-29 13:58:27,717 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:58:27,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:58:27,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b771d26f/5f0049b9c1ec44a5aac441f5d49c4c15/FLAG759078c0d [2020-10-29 13:58:27,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6b771d26f/5f0049b9c1ec44a5aac441f5d49c4c15 [2020-10-29 13:58:27,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:58:27,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:58:27,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:27,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:58:27,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:58:28,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:27" (1/1) ... [2020-10-29 13:58:28,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707fd674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28, skipping insertion in model container [2020-10-29 13:58:28,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:58:27" (1/1) ... [2020-10-29 13:58:28,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:58:28,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:58:28,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:28,651 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:58:28,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:58:28,983 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:58:28,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28 WrapperNode [2020-10-29 13:58:28,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:58:28,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:58:28,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:58:28,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:58:29,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (1/1) ... [2020-10-29 13:58:29,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (1/1) ... [2020-10-29 13:58:29,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (1/1) ... [2020-10-29 13:58:29,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (1/1) ... [2020-10-29 13:58:29,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (1/1) ... [2020-10-29 13:58:29,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (1/1) ... [2020-10-29 13:58:29,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (1/1) ... [2020-10-29 13:58:29,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:58:29,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:58:29,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:58:29,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:58:29,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:58:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:58:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:58:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:58:29,224 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:58:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:58:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:58:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:58:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:58:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:58:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:58:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:58:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:58:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:58:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:58:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:58:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:58:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:58:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:58:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:58:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:58:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:58:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:58:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:58:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:58:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:58:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:58:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:58:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:58:30,427 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:58:30,428 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:58:30,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:30 BoogieIcfgContainer [2020-10-29 13:58:30,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:58:30,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:58:30,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:58:30,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:58:30,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:58:27" (1/3) ... [2020-10-29 13:58:30,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac6c97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:30, skipping insertion in model container [2020-10-29 13:58:30,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:58:28" (2/3) ... [2020-10-29 13:58:30,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac6c97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:58:30, skipping insertion in model container [2020-10-29 13:58:30,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:58:30" (3/3) ... [2020-10-29 13:58:30,440 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:58:30,452 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:58:30,457 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:58:30,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:58:30,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:58:30,502 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:58:30,502 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:58:30,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:58:30,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:58:30,502 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:58:30,503 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:58:30,503 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:58:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states. [2020-10-29 13:58:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:58:30,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:30,542 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] [2020-10-29 13:58:30,543 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:30,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1189511786, now seen corresponding path program 1 times [2020-10-29 13:58:30,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:30,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687407010] [2020-10-29 13:58:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:33,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:36,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:36,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:58:36,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:58:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:58:36,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:36,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 13:58:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:58:36,558 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:36,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:36,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:36,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:36,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:58:36,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:36,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:36,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:36,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:36,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687407010] [2020-10-29 13:58:36,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:36,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:36,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206004364] [2020-10-29 13:58:36,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:36,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:36,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:36,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:36,686 INFO L87 Difference]: Start difference. First operand 279 states. Second operand 5 states. [2020-10-29 13:58:38,934 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:58:40,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:40,012 INFO L93 Difference]: Finished difference Result 794 states and 1396 transitions. [2020-10-29 13:58:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:58:40,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-29 13:58:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:40,032 INFO L225 Difference]: With dead ends: 794 [2020-10-29 13:58:40,032 INFO L226 Difference]: Without dead ends: 518 [2020-10-29 13:58:40,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-29 13:58:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 503. [2020-10-29 13:58:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-10-29 13:58:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 733 transitions. [2020-10-29 13:58:40,153 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 733 transitions. Word has length 103 [2020-10-29 13:58:40,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:40,154 INFO L481 AbstractCegarLoop]: Abstraction has 503 states and 733 transitions. [2020-10-29 13:58:40,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 733 transitions. [2020-10-29 13:58:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:58:40,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:40,159 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] [2020-10-29 13:58:40,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:58:40,160 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:40,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1696543292, now seen corresponding path program 1 times [2020-10-29 13:58:40,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:40,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233575603] [2020-10-29 13:58:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:40,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:40,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:45,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:45,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:58:45,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:58:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:58:45,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:45,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:45,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:45,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:45,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:58:45,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:45,648 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:45,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:45,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:45,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:45,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:45,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:58:45,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:45,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:58:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:45,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233575603] [2020-10-29 13:58:45,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:45,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:45,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075439553] [2020-10-29 13:58:45,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:45,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:45,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:45,753 INFO L87 Difference]: Start difference. First operand 503 states and 733 transitions. Second operand 5 states. [2020-10-29 13:58:47,335 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:58:48,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:48,319 INFO L93 Difference]: Finished difference Result 1421 states and 2058 transitions. [2020-10-29 13:58:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:48,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-29 13:58:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:48,326 INFO L225 Difference]: With dead ends: 1421 [2020-10-29 13:58:48,327 INFO L226 Difference]: Without dead ends: 953 [2020-10-29 13:58:48,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:48,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-10-29 13:58:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 915. [2020-10-29 13:58:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-10-29 13:58:48,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1318 transitions. [2020-10-29 13:58:48,400 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1318 transitions. Word has length 104 [2020-10-29 13:58:48,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:48,400 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1318 transitions. [2020-10-29 13:58:48,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1318 transitions. [2020-10-29 13:58:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 13:58:48,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:48,405 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] [2020-10-29 13:58:48,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:58:48,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:48,406 INFO L82 PathProgramCache]: Analyzing trace with hash -494930637, now seen corresponding path program 1 times [2020-10-29 13:58:48,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:48,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562735407] [2020-10-29 13:58:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:53,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:53,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 13:58:53,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:58:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:58:53,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:53,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:58:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:58:53,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:58:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:53,854 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:58:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:58:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:53,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:58:53,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:58:53,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:58:53,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:58:53,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:58:53,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:58:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:58:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:58:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:58:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:58:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:58:53,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562735407] [2020-10-29 13:58:53,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:58:53,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:58:53,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849639239] [2020-10-29 13:58:53,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:58:53,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:58:53,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:58:53,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:58:53,951 INFO L87 Difference]: Start difference. First operand 915 states and 1318 transitions. Second operand 5 states. [2020-10-29 13:58:55,547 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:58:56,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:58:56,708 INFO L93 Difference]: Finished difference Result 2621 states and 3758 transitions. [2020-10-29 13:58:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:58:56,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-29 13:58:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:58:56,723 INFO L225 Difference]: With dead ends: 2621 [2020-10-29 13:58:56,724 INFO L226 Difference]: Without dead ends: 1749 [2020-10-29 13:58:56,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:58:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-10-29 13:58:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1711. [2020-10-29 13:58:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-10-29 13:58:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2436 transitions. [2020-10-29 13:58:56,832 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2436 transitions. Word has length 105 [2020-10-29 13:58:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:58:56,833 INFO L481 AbstractCegarLoop]: Abstraction has 1711 states and 2436 transitions. [2020-10-29 13:58:56,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:58:56,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2436 transitions. [2020-10-29 13:58:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:58:56,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:58:56,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:58:56,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:58:56,840 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:58:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:58:56,841 INFO L82 PathProgramCache]: Analyzing trace with hash 351269978, now seen corresponding path program 1 times [2020-10-29 13:58:56,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:58:56,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646235406] [2020-10-29 13:58:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:58:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:58:56,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:56,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:58:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:01,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:01,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:59:01,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:59:01,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 13:59:01,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:01,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:01,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 13:59:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:02,534 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:02,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:02,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:02,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:02,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:59:02,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:02,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:02,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:02,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:02,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646235406] [2020-10-29 13:59:02,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:02,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:02,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571835490] [2020-10-29 13:59:02,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:02,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:02,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:02,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:02,609 INFO L87 Difference]: Start difference. First operand 1711 states and 2436 transitions. Second operand 5 states. [2020-10-29 13:59:04,200 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:59:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:05,372 INFO L93 Difference]: Finished difference Result 4342 states and 6233 transitions. [2020-10-29 13:59:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:05,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-29 13:59:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:05,390 INFO L225 Difference]: With dead ends: 4342 [2020-10-29 13:59:05,390 INFO L226 Difference]: Without dead ends: 3276 [2020-10-29 13:59:05,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:05,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2020-10-29 13:59:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 3250. [2020-10-29 13:59:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3250 states. [2020-10-29 13:59:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 4573 transitions. [2020-10-29 13:59:05,589 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 4573 transitions. Word has length 106 [2020-10-29 13:59:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:05,589 INFO L481 AbstractCegarLoop]: Abstraction has 3250 states and 4573 transitions. [2020-10-29 13:59:05,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 4573 transitions. [2020-10-29 13:59:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:59:05,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:05,595 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] [2020-10-29 13:59:05,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:59:05,595 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:05,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:05,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1521809908, now seen corresponding path program 1 times [2020-10-29 13:59:05,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:05,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576486091] [2020-10-29 13:59:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:05,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:08,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:10,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:10,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:59:10,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:10,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:59:10,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:10,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:59:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:11,195 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:11,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:11,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:11,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:11,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:11,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:59:11,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:11,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:11,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:11,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:11,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576486091] [2020-10-29 13:59:11,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:11,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:11,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572649941] [2020-10-29 13:59:11,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:11,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:11,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:11,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:11,268 INFO L87 Difference]: Start difference. First operand 3250 states and 4573 transitions. Second operand 5 states. [2020-10-29 13:59:12,815 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:59:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:14,124 INFO L93 Difference]: Finished difference Result 9043 states and 12754 transitions. [2020-10-29 13:59:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:14,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-29 13:59:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:14,161 INFO L225 Difference]: With dead ends: 9043 [2020-10-29 13:59:14,164 INFO L226 Difference]: Without dead ends: 6259 [2020-10-29 13:59:14,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:14,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2020-10-29 13:59:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 6227. [2020-10-29 13:59:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6227 states. [2020-10-29 13:59:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 8640 transitions. [2020-10-29 13:59:14,620 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 8640 transitions. Word has length 107 [2020-10-29 13:59:14,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:14,622 INFO L481 AbstractCegarLoop]: Abstraction has 6227 states and 8640 transitions. [2020-10-29 13:59:14,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 8640 transitions. [2020-10-29 13:59:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:59:14,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:14,635 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] [2020-10-29 13:59:14,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:59:14,635 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:14,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1493770501, now seen corresponding path program 1 times [2020-10-29 13:59:14,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:14,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303549547] [2020-10-29 13:59:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:14,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:19,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:19,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:59:19,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:19,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:59:19,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:19,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:59:19,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:59:19,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:20,161 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:20,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:20,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:20,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:20,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:20,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:20,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:20,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303549547] [2020-10-29 13:59:20,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:20,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:20,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498896711] [2020-10-29 13:59:20,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:20,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:20,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:20,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:20,243 INFO L87 Difference]: Start difference. First operand 6227 states and 8640 transitions. Second operand 5 states. [2020-10-29 13:59:22,245 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:59:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:23,860 INFO L93 Difference]: Finished difference Result 16248 states and 22747 transitions. [2020-10-29 13:59:23,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:59:23,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-29 13:59:23,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:23,919 INFO L225 Difference]: With dead ends: 16248 [2020-10-29 13:59:23,919 INFO L226 Difference]: Without dead ends: 11980 [2020-10-29 13:59:23,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:59:23,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11980 states. [2020-10-29 13:59:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11980 to 11967. [2020-10-29 13:59:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11967 states. [2020-10-29 13:59:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11967 states to 11967 states and 16371 transitions. [2020-10-29 13:59:24,932 INFO L78 Accepts]: Start accepts. Automaton has 11967 states and 16371 transitions. Word has length 108 [2020-10-29 13:59:24,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:24,932 INFO L481 AbstractCegarLoop]: Abstraction has 11967 states and 16371 transitions. [2020-10-29 13:59:24,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 11967 states and 16371 transitions. [2020-10-29 13:59:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 13:59:24,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:24,950 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] [2020-10-29 13:59:24,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:59:24,951 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:24,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1266936045, now seen corresponding path program 1 times [2020-10-29 13:59:24,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:24,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951608385] [2020-10-29 13:59:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:25,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 13:59:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:30,416 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:30,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:30,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:30,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:30,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:30,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:59:30,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:30,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:30,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:30,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:30,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951608385] [2020-10-29 13:59:30,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:30,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:30,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709649872] [2020-10-29 13:59:30,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:30,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:30,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:30,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:30,463 INFO L87 Difference]: Start difference. First operand 11967 states and 16371 transitions. Second operand 5 states. [2020-10-29 13:59:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:32,311 INFO L93 Difference]: Finished difference Result 19329 states and 26446 transitions. [2020-10-29 13:59:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:32,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-29 13:59:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:32,348 INFO L225 Difference]: With dead ends: 19329 [2020-10-29 13:59:32,348 INFO L226 Difference]: Without dead ends: 7833 [2020-10-29 13:59:32,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:59:32,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2020-10-29 13:59:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 7813. [2020-10-29 13:59:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7813 states. [2020-10-29 13:59:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7813 states to 7813 states and 10659 transitions. [2020-10-29 13:59:32,928 INFO L78 Accepts]: Start accepts. Automaton has 7813 states and 10659 transitions. Word has length 109 [2020-10-29 13:59:32,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:32,929 INFO L481 AbstractCegarLoop]: Abstraction has 7813 states and 10659 transitions. [2020-10-29 13:59:32,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:59:32,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7813 states and 10659 transitions. [2020-10-29 13:59:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 13:59:32,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:32,941 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] [2020-10-29 13:59:32,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:59:32,942 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:32,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1443014911, now seen corresponding path program 1 times [2020-10-29 13:59:32,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:32,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433698581] [2020-10-29 13:59:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:33,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:37,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 13:59:37,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:59:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:59:37,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:37,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:59:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:59:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 13:59:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:38,537 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:38,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:38,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:38,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:38,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:59:38,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:38,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:59:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:38,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433698581] [2020-10-29 13:59:38,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:38,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:59:38,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813334815] [2020-10-29 13:59:38,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:59:38,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:38,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:59:38,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:59:38,625 INFO L87 Difference]: Start difference. First operand 7813 states and 10659 transitions. Second operand 9 states. [2020-10-29 13:59:39,070 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 13:59:40,687 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 13:59:41,117 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:59:42,940 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 13:59:43,386 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 13:59:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:43,843 INFO L93 Difference]: Finished difference Result 22823 states and 32939 transitions. [2020-10-29 13:59:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 13:59:43,843 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-10-29 13:59:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:43,887 INFO L225 Difference]: With dead ends: 22823 [2020-10-29 13:59:43,888 INFO L226 Difference]: Without dead ends: 17237 [2020-10-29 13:59:43,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 13:59:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17237 states. [2020-10-29 13:59:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17237 to 9349. [2020-10-29 13:59:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9349 states. [2020-10-29 13:59:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9349 states to 9349 states and 12723 transitions. [2020-10-29 13:59:44,721 INFO L78 Accepts]: Start accepts. Automaton has 9349 states and 12723 transitions. Word has length 111 [2020-10-29 13:59:44,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:44,721 INFO L481 AbstractCegarLoop]: Abstraction has 9349 states and 12723 transitions. [2020-10-29 13:59:44,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:59:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 9349 states and 12723 transitions. [2020-10-29 13:59:44,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 13:59:44,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:44,740 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] [2020-10-29 13:59:44,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:59:44,740 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:44,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:44,741 INFO L82 PathProgramCache]: Analyzing trace with hash 175118947, now seen corresponding path program 1 times [2020-10-29 13:59:44,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:44,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128629054] [2020-10-29 13:59:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:44,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:47,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:49,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 13:59:49,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:59:49,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:49,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:59:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 13:59:49,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 13:59:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:50,175 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:50,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:50,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:50,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:50,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:59:50,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:50,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:50,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:50,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:50,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:50,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128629054] [2020-10-29 13:59:50,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:50,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:59:50,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640445674] [2020-10-29 13:59:50,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:59:50,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:50,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:59:50,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:59:50,224 INFO L87 Difference]: Start difference. First operand 9349 states and 12723 transitions. Second operand 4 states. [2020-10-29 13:59:52,401 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 13:59:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:59:53,213 INFO L93 Difference]: Finished difference Result 17638 states and 25256 transitions. [2020-10-29 13:59:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:59:53,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-29 13:59:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:59:53,237 INFO L225 Difference]: With dead ends: 17638 [2020-10-29 13:59:53,237 INFO L226 Difference]: Without dead ends: 11416 [2020-10-29 13:59:53,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:53,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11416 states. [2020-10-29 13:59:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11416 to 11173. [2020-10-29 13:59:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11173 states. [2020-10-29 13:59:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11173 states to 11173 states and 15803 transitions. [2020-10-29 13:59:54,070 INFO L78 Accepts]: Start accepts. Automaton has 11173 states and 15803 transitions. Word has length 111 [2020-10-29 13:59:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:59:54,070 INFO L481 AbstractCegarLoop]: Abstraction has 11173 states and 15803 transitions. [2020-10-29 13:59:54,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:59:54,070 INFO L276 IsEmpty]: Start isEmpty. Operand 11173 states and 15803 transitions. [2020-10-29 13:59:54,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 13:59:54,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:59:54,080 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] [2020-10-29 13:59:54,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:59:54,081 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:59:54,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:59:54,081 INFO L82 PathProgramCache]: Analyzing trace with hash -177891159, now seen corresponding path program 1 times [2020-10-29 13:59:54,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:59:54,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961656222] [2020-10-29 13:59:54,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:59:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:59,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 13:59:59,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:59:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:59:59,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:59,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:59:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 13:59:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:59:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:59,587 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 13:59:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:59:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:59:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:59:59,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:59:59,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:59:59,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:59:59,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:59:59,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:59:59,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:59:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:59:59,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:59:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:59:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:59:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:59:59,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961656222] [2020-10-29 13:59:59,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:59:59,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:59:59,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276118141] [2020-10-29 13:59:59,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:59:59,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:59:59,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:59:59,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:59:59,627 INFO L87 Difference]: Start difference. First operand 11173 states and 15803 transitions. Second operand 5 states. [2020-10-29 14:00:00,023 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-29 14:00:01,346 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-29 14:00:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:03,979 INFO L93 Difference]: Finished difference Result 31841 states and 48114 transitions. [2020-10-29 14:00:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:00:03,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-29 14:00:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:04,033 INFO L225 Difference]: With dead ends: 31841 [2020-10-29 14:00:04,033 INFO L226 Difference]: Without dead ends: 24339 [2020-10-29 14:00:04,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24339 states. [2020-10-29 14:00:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24339 to 24261. [2020-10-29 14:00:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24261 states. [2020-10-29 14:00:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24261 states to 24261 states and 36315 transitions. [2020-10-29 14:00:06,510 INFO L78 Accepts]: Start accepts. Automaton has 24261 states and 36315 transitions. Word has length 114 [2020-10-29 14:00:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:06,510 INFO L481 AbstractCegarLoop]: Abstraction has 24261 states and 36315 transitions. [2020-10-29 14:00:06,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 24261 states and 36315 transitions. [2020-10-29 14:00:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 14:00:06,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:06,518 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] [2020-10-29 14:00:06,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:00:06,518 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:06,519 INFO L82 PathProgramCache]: Analyzing trace with hash -541335289, now seen corresponding path program 1 times [2020-10-29 14:00:06,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:06,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687142009] [2020-10-29 14:00:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:06,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:11,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:11,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 14:00:11,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:00:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 14:00:11,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:11,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 14:00:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:00:11,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:11,983 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:11,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:11,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:11,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:00:11,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:11,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:11,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:12,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:12,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687142009] [2020-10-29 14:00:12,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:12,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:12,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798605018] [2020-10-29 14:00:12,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:12,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:12,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:12,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:12,029 INFO L87 Difference]: Start difference. First operand 24261 states and 36315 transitions. Second operand 5 states. [2020-10-29 14:00:15,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:15,018 INFO L93 Difference]: Finished difference Result 43831 states and 65537 transitions. [2020-10-29 14:00:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:15,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-29 14:00:15,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:15,058 INFO L225 Difference]: With dead ends: 43831 [2020-10-29 14:00:15,058 INFO L226 Difference]: Without dead ends: 19671 [2020-10-29 14:00:15,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19671 states. [2020-10-29 14:00:17,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19671 to 19670. [2020-10-29 14:00:17,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19670 states. [2020-10-29 14:00:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19670 states to 19670 states and 29354 transitions. [2020-10-29 14:00:17,153 INFO L78 Accepts]: Start accepts. Automaton has 19670 states and 29354 transitions. Word has length 114 [2020-10-29 14:00:17,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:17,153 INFO L481 AbstractCegarLoop]: Abstraction has 19670 states and 29354 transitions. [2020-10-29 14:00:17,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 19670 states and 29354 transitions. [2020-10-29 14:00:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 14:00:17,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:17,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:17,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:00:17,159 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:17,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1193520868, now seen corresponding path program 1 times [2020-10-29 14:00:17,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:17,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354749072] [2020-10-29 14:00:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:17,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:22,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:22,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:00:22,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:00:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:00:22,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:22,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:00:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:00:22,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 14:00:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:22,707 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:22,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:22,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:22,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 14:00:22,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:22,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:00:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:00:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:22,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354749072] [2020-10-29 14:00:22,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:22,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:00:22,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920007178] [2020-10-29 14:00:22,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:00:22,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:22,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:00:22,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:00:22,790 INFO L87 Difference]: Start difference. First operand 19670 states and 29354 transitions. Second operand 9 states. [2020-10-29 14:00:23,228 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 14:00:24,999 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 14:00:25,499 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 14:00:27,780 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 14:00:28,290 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 14:00:32,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:32,879 INFO L93 Difference]: Finished difference Result 75576 states and 114565 transitions. [2020-10-29 14:00:32,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:00:32,880 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-10-29 14:00:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:33,007 INFO L225 Difference]: With dead ends: 75576 [2020-10-29 14:00:33,008 INFO L226 Difference]: Without dead ends: 58062 [2020-10-29 14:00:33,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-29 14:00:33,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58062 states. [2020-10-29 14:00:37,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58062 to 31951. [2020-10-29 14:00:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31951 states. [2020-10-29 14:00:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31951 states to 31951 states and 47681 transitions. [2020-10-29 14:00:37,190 INFO L78 Accepts]: Start accepts. Automaton has 31951 states and 47681 transitions. Word has length 116 [2020-10-29 14:00:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:37,191 INFO L481 AbstractCegarLoop]: Abstraction has 31951 states and 47681 transitions. [2020-10-29 14:00:37,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:00:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 31951 states and 47681 transitions. [2020-10-29 14:00:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 14:00:37,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:37,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:00:37,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:00:37,198 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:37,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1674614175, now seen corresponding path program 1 times [2020-10-29 14:00:37,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:37,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942267817] [2020-10-29 14:00:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 14:00:41,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:00:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4067 [2020-10-29 14:00:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:41,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 14:00:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:00:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:41,778 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:41,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:41,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:41,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:41,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:41,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:00:41,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:41,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:41,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942267817] [2020-10-29 14:00:41,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:41,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:41,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281855357] [2020-10-29 14:00:41,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:41,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:41,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:41,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:41,825 INFO L87 Difference]: Start difference. First operand 31951 states and 47681 transitions. Second operand 5 states. [2020-10-29 14:00:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:45,638 INFO L93 Difference]: Finished difference Result 54341 states and 81049 transitions. [2020-10-29 14:00:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:00:45,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-29 14:00:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:45,675 INFO L225 Difference]: With dead ends: 54341 [2020-10-29 14:00:45,675 INFO L226 Difference]: Without dead ends: 22729 [2020-10-29 14:00:45,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:00:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22729 states. [2020-10-29 14:00:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22729 to 22728. [2020-10-29 14:00:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22728 states. [2020-10-29 14:00:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22728 states to 22728 states and 33751 transitions. [2020-10-29 14:00:48,599 INFO L78 Accepts]: Start accepts. Automaton has 22728 states and 33751 transitions. Word has length 116 [2020-10-29 14:00:48,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:00:48,599 INFO L481 AbstractCegarLoop]: Abstraction has 22728 states and 33751 transitions. [2020-10-29 14:00:48,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:00:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand 22728 states and 33751 transitions. [2020-10-29 14:00:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 14:00:48,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:00:48,606 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] [2020-10-29 14:00:48,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:00:48,607 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:00:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:00:48,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1624009560, now seen corresponding path program 1 times [2020-10-29 14:00:48,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:00:48,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893582170] [2020-10-29 14:00:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:00:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:53,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:53,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 14:00:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:00:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 14:00:53,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:53,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:00:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:00:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 14:00:53,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:54,173 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:00:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:00:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:00:54,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:00:54,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:00:54,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:00:54,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:00:54,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:00:54,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:00:54,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:00:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:00:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:00:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:00:54,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:00:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:00:54,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893582170] [2020-10-29 14:00:54,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:00:54,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:00:54,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776469581] [2020-10-29 14:00:54,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:00:54,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:00:54,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:00:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:00:54,223 INFO L87 Difference]: Start difference. First operand 22728 states and 33751 transitions. Second operand 5 states. [2020-10-29 14:00:54,598 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-29 14:00:58,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:00:58,872 INFO L93 Difference]: Finished difference Result 39115 states and 58068 transitions. [2020-10-29 14:00:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:00:58,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-29 14:00:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:00:58,904 INFO L225 Difference]: With dead ends: 39115 [2020-10-29 14:00:58,905 INFO L226 Difference]: Without dead ends: 22745 [2020-10-29 14:00:58,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:00:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22745 states. [2020-10-29 14:01:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22745 to 22728. [2020-10-29 14:01:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22728 states. [2020-10-29 14:01:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22728 states to 22728 states and 33611 transitions. [2020-10-29 14:01:01,763 INFO L78 Accepts]: Start accepts. Automaton has 22728 states and 33611 transitions. Word has length 117 [2020-10-29 14:01:01,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:01,763 INFO L481 AbstractCegarLoop]: Abstraction has 22728 states and 33611 transitions. [2020-10-29 14:01:01,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 22728 states and 33611 transitions. [2020-10-29 14:01:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 14:01:01,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:01,768 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] [2020-10-29 14:01:01,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:01:01,769 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:01,769 INFO L82 PathProgramCache]: Analyzing trace with hash -92261665, now seen corresponding path program 1 times [2020-10-29 14:01:01,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:01,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450952699] [2020-10-29 14:01:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:01,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:02,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:03,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:03,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 14:01:03,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:01:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-10-29 14:01:03,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:03,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:01:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:01:03,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 14:01:03,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:03,899 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:01:03,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:03,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:03,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:03,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:03,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:01:03,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:03,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:01:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:03,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 14:01:03,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:03,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450952699] [2020-10-29 14:01:03,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:03,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 14:01:03,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014073578] [2020-10-29 14:01:03,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:01:03,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:03,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:01:03,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:01:03,964 INFO L87 Difference]: Start difference. First operand 22728 states and 33611 transitions. Second operand 9 states. [2020-10-29 14:01:04,430 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-29 14:01:06,271 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-29 14:01:06,716 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 14:01:08,793 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-29 14:01:09,240 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-29 14:01:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:17,549 INFO L93 Difference]: Finished difference Result 99029 states and 146137 transitions. [2020-10-29 14:01:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 14:01:17,550 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 118 [2020-10-29 14:01:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:17,670 INFO L225 Difference]: With dead ends: 99029 [2020-10-29 14:01:17,671 INFO L226 Difference]: Without dead ends: 77438 [2020-10-29 14:01:17,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:01:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77438 states. [2020-10-29 14:01:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77438 to 39149. [2020-10-29 14:01:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39149 states. [2020-10-29 14:01:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39149 states to 39149 states and 56825 transitions. [2020-10-29 14:01:23,186 INFO L78 Accepts]: Start accepts. Automaton has 39149 states and 56825 transitions. Word has length 118 [2020-10-29 14:01:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:23,186 INFO L481 AbstractCegarLoop]: Abstraction has 39149 states and 56825 transitions. [2020-10-29 14:01:23,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:01:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 39149 states and 56825 transitions. [2020-10-29 14:01:23,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 14:01:23,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:23,197 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] [2020-10-29 14:01:23,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:01:23,197 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:23,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash 335066028, now seen corresponding path program 1 times [2020-10-29 14:01:23,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:23,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160261831] [2020-10-29 14:01:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:23,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:23,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 14:01:23,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:01:23,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-29 14:01:23,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:23,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:01:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-29 14:01:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 14:01:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:23,911 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:01:23,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:23,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:23,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:23,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:01:23,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:23,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:23,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:23,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:23,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160261831] [2020-10-29 14:01:23,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:23,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:01:23,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830123259] [2020-10-29 14:01:23,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:01:23,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:23,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:01:23,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:01:23,962 INFO L87 Difference]: Start difference. First operand 39149 states and 56825 transitions. Second operand 4 states. [2020-10-29 14:01:26,810 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 14:01:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:33,129 INFO L93 Difference]: Finished difference Result 93079 states and 137086 transitions. [2020-10-29 14:01:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:33,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-29 14:01:33,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:33,215 INFO L225 Difference]: With dead ends: 93079 [2020-10-29 14:01:33,215 INFO L226 Difference]: Without dead ends: 55764 [2020-10-29 14:01:33,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55764 states. [2020-10-29 14:01:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55764 to 53835. [2020-10-29 14:01:40,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53835 states. [2020-10-29 14:01:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53835 states to 53835 states and 79069 transitions. [2020-10-29 14:01:40,394 INFO L78 Accepts]: Start accepts. Automaton has 53835 states and 79069 transitions. Word has length 118 [2020-10-29 14:01:40,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:40,395 INFO L481 AbstractCegarLoop]: Abstraction has 53835 states and 79069 transitions. [2020-10-29 14:01:40,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:01:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 53835 states and 79069 transitions. [2020-10-29 14:01:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 14:01:40,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:40,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:40,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 14:01:40,400 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:40,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:40,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1276458992, now seen corresponding path program 1 times [2020-10-29 14:01:40,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:40,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397472998] [2020-10-29 14:01:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:40,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:40,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 14:01:40,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:40,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 14:01:40,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:40,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:01:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-29 14:01:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 14:01:40,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:40,911 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:01:40,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:40,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:40,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:40,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:40,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:40,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:01:40,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:40,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:40,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:40,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:40,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397472998] [2020-10-29 14:01:40,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:40,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:01:40,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934123498] [2020-10-29 14:01:40,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:01:40,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:40,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:01:40,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:01:40,956 INFO L87 Difference]: Start difference. First operand 53835 states and 79069 transitions. Second operand 4 states. [2020-10-29 14:01:43,962 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-29 14:01:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:53,242 INFO L93 Difference]: Finished difference Result 130939 states and 194923 transitions. [2020-10-29 14:01:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:53,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-29 14:01:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:53,357 INFO L225 Difference]: With dead ends: 130939 [2020-10-29 14:01:53,357 INFO L226 Difference]: Without dead ends: 78431 [2020-10-29 14:01:53,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78431 states.