/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_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:29:15,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:29:15,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:29:15,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:29:15,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:29:15,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:29:15,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:29:15,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:29:15,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:29:15,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:29:15,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:29:15,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:29:15,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:29:15,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:29:15,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:29:15,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:29:15,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:29:15,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:29:15,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:29:15,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:29:15,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:29:15,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:29:15,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:29:15,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:29:15,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:29:15,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:29:15,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:29:15,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:29:15,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:29:15,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:29:15,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:29:15,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:29:15,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:29:15,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:29:15,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:29:15,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:29:15,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:29:15,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:29:15,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:29:15,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:29:15,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:29:15,383 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 13:29:15,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:29:15,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:29:15,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:29:15,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:29:15,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:29:15,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:29:15,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:29:15,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:29:15,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:29:15,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:29:15,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:29:15,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:29:15,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:29:15,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:29:15,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:29:15,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:29:15,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:29:15,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:29:15,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:29:15,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:29:15,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:29:15,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:29:15,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:29:15,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:29:15,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:29:15,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:29:15,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:29:15,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:29:15,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:29:15,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:29:15,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:29:15,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:29:15,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:29:15,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:29:15,906 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:29:15,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:29:16,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efe05267d/d083eab2880049299a9c9b0dd29d50f2/FLAGe56b3caab [2020-10-29 13:29:16,873 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:29:16,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:29:16,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efe05267d/d083eab2880049299a9c9b0dd29d50f2/FLAGe56b3caab [2020-10-29 13:29:17,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efe05267d/d083eab2880049299a9c9b0dd29d50f2 [2020-10-29 13:29:17,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:29:17,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:29:17,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:29:17,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:29:17,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:29:17,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:29:17" (1/1) ... [2020-10-29 13:29:17,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4bb28d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:17, skipping insertion in model container [2020-10-29 13:29:17,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:29:17" (1/1) ... [2020-10-29 13:29:17,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:29:17,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:29:19,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:29:19,166 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:29:19,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:29:19,919 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:29:19,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19 WrapperNode [2020-10-29 13:29:19,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:29:19,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:29:19,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:29:19,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:29:19,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (1/1) ... [2020-10-29 13:29:19,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (1/1) ... [2020-10-29 13:29:20,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (1/1) ... [2020-10-29 13:29:20,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (1/1) ... [2020-10-29 13:29:20,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (1/1) ... [2020-10-29 13:29:20,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (1/1) ... [2020-10-29 13:29:20,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (1/1) ... [2020-10-29 13:29:20,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:29:20,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:29:20,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:29:20,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:29:20,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (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 13:29:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:29:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:29:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:29:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:29:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:29:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:29:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:29:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:29:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:29:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:29:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:29:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:29:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:29:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:29:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:29:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:29:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:29:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:29:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:29:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:29:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:29:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:29:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:29:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:29:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:29:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:29:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:29:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:29:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:29:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:29:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:29:24,419 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:29:24,419 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:29:24,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:29:24 BoogieIcfgContainer [2020-10-29 13:29:24,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:29:24,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:29:24,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:29:24,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:29:24,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:29:17" (1/3) ... [2020-10-29 13:29:24,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d93812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:29:24, skipping insertion in model container [2020-10-29 13:29:24,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:19" (2/3) ... [2020-10-29 13:29:24,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d93812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:29:24, skipping insertion in model container [2020-10-29 13:29:24,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:29:24" (3/3) ... [2020-10-29 13:29:24,448 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:29:24,476 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:29:24,491 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:29:24,506 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:29:24,552 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:29:24,553 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:29:24,553 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:29:24,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:29:24,553 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:29:24,553 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:29:24,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:29:24,553 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:29:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states. [2020-10-29 13:29:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 13:29:24,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:24,643 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] [2020-10-29 13:29:24,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:24,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:24,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1673233271, now seen corresponding path program 1 times [2020-10-29 13:29:24,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:24,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939582445] [2020-10-29 13:29:24,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:26,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:26,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:27,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:28,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:29,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:30,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:30,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 13:29:30,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:29:30,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 13:29:30,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:30,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:29:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:29:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:29:32,064 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:29:32,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:32,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:32,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:32,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:32,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:32,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 13:29:32,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:32,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:32,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:29:32,290 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 13:29:32,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939582445] [2020-10-29 13:29:32,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:32,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:32,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894396000] [2020-10-29 13:29:32,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:32,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:32,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:32,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:32,326 INFO L87 Difference]: Start difference. First operand 1133 states. Second operand 6 states. [2020-10-29 13:29:34,082 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:29:44,543 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-29 13:29:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:45,333 INFO L93 Difference]: Finished difference Result 2013 states and 3577 transitions. [2020-10-29 13:29:45,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:29:45,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-10-29 13:29:45,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:45,359 INFO L225 Difference]: With dead ends: 2013 [2020-10-29 13:29:45,359 INFO L226 Difference]: Without dead ends: 1180 [2020-10-29 13:29:45,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:29:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-10-29 13:29:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1114. [2020-10-29 13:29:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-10-29 13:29:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1514 transitions. [2020-10-29 13:29:45,502 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1514 transitions. Word has length 90 [2020-10-29 13:29:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:45,503 INFO L481 AbstractCegarLoop]: Abstraction has 1114 states and 1514 transitions. [2020-10-29 13:29:45,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1514 transitions. [2020-10-29 13:29:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 13:29:45,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:45,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:45,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:29:45,510 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:45,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:45,512 INFO L82 PathProgramCache]: Analyzing trace with hash -445145111, now seen corresponding path program 1 times [2020-10-29 13:29:45,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:45,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904074726] [2020-10-29 13:29:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:46,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:47,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:50,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:50,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 13:29:50,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:29:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:29:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:50,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:29:50,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:29:50,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:29:52,381 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:29:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:52,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:52,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:52,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:52,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 13:29:52,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:52,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:52,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:29:52,555 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 13:29:52,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904074726] [2020-10-29 13:29:52,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:52,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:52,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862126862] [2020-10-29 13:29:52,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:52,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:52,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:52,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:52,559 INFO L87 Difference]: Start difference. First operand 1114 states and 1514 transitions. Second operand 6 states. [2020-10-29 13:29:54,405 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-29 13:29:59,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:59,929 INFO L93 Difference]: Finished difference Result 1916 states and 2685 transitions. [2020-10-29 13:29:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:29:59,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-29 13:29:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:59,942 INFO L225 Difference]: With dead ends: 1916 [2020-10-29 13:29:59,942 INFO L226 Difference]: Without dead ends: 986 [2020-10-29 13:29:59,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:59,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-10-29 13:30:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2020-10-29 13:30:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-29 13:30:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1368 transitions. [2020-10-29 13:30:00,021 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1368 transitions. Word has length 91 [2020-10-29 13:30:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:00,023 INFO L481 AbstractCegarLoop]: Abstraction has 986 states and 1368 transitions. [2020-10-29 13:30:00,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1368 transitions. [2020-10-29 13:30:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 13:30:00,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:00,028 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] [2020-10-29 13:30:00,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:30:00,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:00,030 INFO L82 PathProgramCache]: Analyzing trace with hash 950791993, now seen corresponding path program 1 times [2020-10-29 13:30:00,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:00,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805824516] [2020-10-29 13:30:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:00,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:00,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:00,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:01,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:01,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:05,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 13:30:05,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:30:05,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 13:30:05,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:05,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:30:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:30:06,990 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:30:06,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:07,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:07,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:07,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:07,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:07,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 13:30:07,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:07,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:07,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:07,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:30:07,141 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 13:30:07,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805824516] [2020-10-29 13:30:07,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:07,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:07,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106158820] [2020-10-29 13:30:07,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:07,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:07,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:07,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:07,146 INFO L87 Difference]: Start difference. First operand 986 states and 1368 transitions. Second operand 6 states. [2020-10-29 13:30:09,060 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-29 13:30:15,721 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 503 [2020-10-29 13:30:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:16,478 INFO L93 Difference]: Finished difference Result 2192 states and 3098 transitions. [2020-10-29 13:30:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:30:16,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-29 13:30:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:16,491 INFO L225 Difference]: With dead ends: 2192 [2020-10-29 13:30:16,491 INFO L226 Difference]: Without dead ends: 1338 [2020-10-29 13:30:16,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2020-10-29 13:30:16,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1272. [2020-10-29 13:30:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1272 states. [2020-10-29 13:30:16,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1799 transitions. [2020-10-29 13:30:16,567 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1799 transitions. Word has length 92 [2020-10-29 13:30:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:16,568 INFO L481 AbstractCegarLoop]: Abstraction has 1272 states and 1799 transitions. [2020-10-29 13:30:16,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:16,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1799 transitions. [2020-10-29 13:30:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 13:30:16,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:16,572 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] [2020-10-29 13:30:16,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:30:16,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1651202849, now seen corresponding path program 1 times [2020-10-29 13:30:16,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:16,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831539419] [2020-10-29 13:30:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:16,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:16,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:21,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 13:30:21,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:30:21,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:30:21,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:21,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:30:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:30:23,636 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:30:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:23,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:23,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:23,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:23,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 13:30:23,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:23,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:23,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:23,772 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 13:30:23,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831539419] [2020-10-29 13:30:23,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:23,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:23,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386910648] [2020-10-29 13:30:23,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:23,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:23,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:23,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:23,775 INFO L87 Difference]: Start difference. First operand 1272 states and 1799 transitions. Second operand 6 states. [2020-10-29 13:30:25,550 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-29 13:30:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:30,216 INFO L93 Difference]: Finished difference Result 2412 states and 3459 transitions. [2020-10-29 13:30:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:30:30,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-10-29 13:30:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:30,227 INFO L225 Difference]: With dead ends: 2412 [2020-10-29 13:30:30,227 INFO L226 Difference]: Without dead ends: 1231 [2020-10-29 13:30:30,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2020-10-29 13:30:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1231. [2020-10-29 13:30:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-10-29 13:30:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1750 transitions. [2020-10-29 13:30:30,323 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1750 transitions. Word has length 93 [2020-10-29 13:30:30,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:30,324 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1750 transitions. [2020-10-29 13:30:30,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1750 transitions. [2020-10-29 13:30:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 13:30:30,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:30,327 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] [2020-10-29 13:30:30,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:30:30,327 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:30,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:30,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1652617298, now seen corresponding path program 1 times [2020-10-29 13:30:30,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:30,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112544059] [2020-10-29 13:30:30,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:30,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:33,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:35,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:35,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 13:30:35,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:30:35,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:30:35,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:35,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:35,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:30:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:37,168 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:30:37,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:37,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:37,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:37,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:37,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 13:30:37,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:37,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:37,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:37,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:37,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:30:37,299 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 13:30:37,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112544059] [2020-10-29 13:30:37,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:37,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:37,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520067802] [2020-10-29 13:30:37,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:37,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:37,302 INFO L87 Difference]: Start difference. First operand 1231 states and 1750 transitions. Second operand 6 states. [2020-10-29 13:30:39,053 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 505 [2020-10-29 13:30:45,006 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 503 [2020-10-29 13:30:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:45,721 INFO L93 Difference]: Finished difference Result 3053 states and 4387 transitions. [2020-10-29 13:30:45,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:30:45,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-29 13:30:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:45,733 INFO L225 Difference]: With dead ends: 3053 [2020-10-29 13:30:45,733 INFO L226 Difference]: Without dead ends: 1897 [2020-10-29 13:30:45,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:45,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2020-10-29 13:30:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1831. [2020-10-29 13:30:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1831 states. [2020-10-29 13:30:45,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 2641 transitions. [2020-10-29 13:30:45,854 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 2641 transitions. Word has length 94 [2020-10-29 13:30:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:45,854 INFO L481 AbstractCegarLoop]: Abstraction has 1831 states and 2641 transitions. [2020-10-29 13:30:45,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:45,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 2641 transitions. [2020-10-29 13:30:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:30:45,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:45,858 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] [2020-10-29 13:30:45,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:30:45,859 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash -299005610, now seen corresponding path program 1 times [2020-10-29 13:30:45,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:45,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655548097] [2020-10-29 13:30:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:45,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:50,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:50,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:30:50,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:30:50,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:30:50,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:50,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:50,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:50,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 13:30:50,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:52,590 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:30:52,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:52,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:52,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:52,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:52,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 13:30:52,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:52,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:52,734 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 13:30:52,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655548097] [2020-10-29 13:30:52,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:52,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:52,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092453469] [2020-10-29 13:30:52,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:52,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:52,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:52,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:52,737 INFO L87 Difference]: Start difference. First operand 1831 states and 2641 transitions. Second operand 6 states. [2020-10-29 13:30:54,516 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 502 [2020-10-29 13:30:59,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:59,216 INFO L93 Difference]: Finished difference Result 3587 states and 5206 transitions. [2020-10-29 13:30:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:30:59,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-29 13:30:59,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:59,227 INFO L225 Difference]: With dead ends: 3587 [2020-10-29 13:30:59,227 INFO L226 Difference]: Without dead ends: 1826 [2020-10-29 13:30:59,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2020-10-29 13:30:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1826. [2020-10-29 13:30:59,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1826 states. [2020-10-29 13:30:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2627 transitions. [2020-10-29 13:30:59,348 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2627 transitions. Word has length 95 [2020-10-29 13:30:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:59,349 INFO L481 AbstractCegarLoop]: Abstraction has 1826 states and 2627 transitions. [2020-10-29 13:30:59,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:59,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2627 transitions. [2020-10-29 13:30:59,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:30:59,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:59,352 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] [2020-10-29 13:30:59,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:30:59,353 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:59,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:59,353 INFO L82 PathProgramCache]: Analyzing trace with hash 926197821, now seen corresponding path program 1 times [2020-10-29 13:30:59,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:59,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623783906] [2020-10-29 13:30:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:59,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:00,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:01,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:02,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:02,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:04,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:04,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:31:04,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:31:04,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:31:04,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:04,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:31:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:04,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 13:31:04,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:06,337 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:31:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:06,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:06,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 13:31:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:06,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:06,524 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 13:31:06,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623783906] [2020-10-29 13:31:06,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:06,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:31:06,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290563563] [2020-10-29 13:31:06,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:31:06,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:06,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:31:06,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:31:06,528 INFO L87 Difference]: Start difference. First operand 1826 states and 2627 transitions. Second operand 7 states. [2020-10-29 13:31:08,360 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 506 [2020-10-29 13:31:14,463 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:31:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:15,967 INFO L93 Difference]: Finished difference Result 3823 states and 5472 transitions. [2020-10-29 13:31:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:31:15,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-29 13:31:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:15,980 INFO L225 Difference]: With dead ends: 3823 [2020-10-29 13:31:15,980 INFO L226 Difference]: Without dead ends: 2666 [2020-10-29 13:31:15,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:31:15,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2020-10-29 13:31:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 1826. [2020-10-29 13:31:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1826 states. [2020-10-29 13:31:16,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2626 transitions. [2020-10-29 13:31:16,147 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2626 transitions. Word has length 96 [2020-10-29 13:31:16,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:16,148 INFO L481 AbstractCegarLoop]: Abstraction has 1826 states and 2626 transitions. [2020-10-29 13:31:16,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:31:16,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2626 transitions. [2020-10-29 13:31:16,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:31:16,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:16,151 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] [2020-10-29 13:31:16,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:31:16,152 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:16,152 INFO L82 PathProgramCache]: Analyzing trace with hash 879044708, now seen corresponding path program 1 times [2020-10-29 13:31:16,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:16,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868226904] [2020-10-29 13:31:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:17,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:18,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:21,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:21,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:31:21,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:31:21,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:31:21,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:21,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:31:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 13:31:21,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:23,026 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:31:23,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:23,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:23,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:23,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:23,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:31:23,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:23,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:23,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:23,099 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 13:31:23,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868226904] [2020-10-29 13:31:23,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:23,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:31:23,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233925697] [2020-10-29 13:31:23,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:31:23,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:23,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:31:23,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:31:23,102 INFO L87 Difference]: Start difference. First operand 1826 states and 2626 transitions. Second operand 8 states. [2020-10-29 13:31:24,965 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:31:31,037 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:31:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:33,448 INFO L93 Difference]: Finished difference Result 4892 states and 7191 transitions. [2020-10-29 13:31:33,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:31:33,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-29 13:31:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:33,470 INFO L225 Difference]: With dead ends: 4892 [2020-10-29 13:31:33,471 INFO L226 Difference]: Without dead ends: 4234 [2020-10-29 13:31:33,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:31:33,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2020-10-29 13:31:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 1826. [2020-10-29 13:31:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1826 states. [2020-10-29 13:31:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2625 transitions. [2020-10-29 13:31:33,716 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2625 transitions. Word has length 96 [2020-10-29 13:31:33,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:33,717 INFO L481 AbstractCegarLoop]: Abstraction has 1826 states and 2625 transitions. [2020-10-29 13:31:33,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:31:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2625 transitions. [2020-10-29 13:31:33,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:31:33,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:33,723 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] [2020-10-29 13:31:33,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:31:33,723 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:33,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:33,724 INFO L82 PathProgramCache]: Analyzing trace with hash -390349625, now seen corresponding path program 1 times [2020-10-29 13:31:33,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:33,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283691973] [2020-10-29 13:31:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:33,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:33,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:37,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:38,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:38,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:38,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:31:38,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:31:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:31:38,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:38,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:31:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:38,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:31:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:40,553 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:31:40,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:40,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:40,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:40,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:40,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:40,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:31:40,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:40,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:40,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:40,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:40,646 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 13:31:40,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283691973] [2020-10-29 13:31:40,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:40,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:31:40,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271119884] [2020-10-29 13:31:40,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:31:40,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:40,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:31:40,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:31:40,649 INFO L87 Difference]: Start difference. First operand 1826 states and 2625 transitions. Second operand 8 states. [2020-10-29 13:31:42,416 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:31:48,171 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:31:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:50,413 INFO L93 Difference]: Finished difference Result 3644 states and 5346 transitions. [2020-10-29 13:31:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:31:50,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-29 13:31:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:50,427 INFO L225 Difference]: With dead ends: 3644 [2020-10-29 13:31:50,427 INFO L226 Difference]: Without dead ends: 3042 [2020-10-29 13:31:50,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:31:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2020-10-29 13:31:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1826. [2020-10-29 13:31:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1826 states. [2020-10-29 13:31:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2624 transitions. [2020-10-29 13:31:50,639 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2624 transitions. Word has length 96 [2020-10-29 13:31:50,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:50,640 INFO L481 AbstractCegarLoop]: Abstraction has 1826 states and 2624 transitions. [2020-10-29 13:31:50,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:31:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2624 transitions. [2020-10-29 13:31:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:31:50,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:50,643 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] [2020-10-29 13:31:50,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:31:50,644 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:50,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:50,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1607350100, now seen corresponding path program 1 times [2020-10-29 13:31:50,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:50,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82592827] [2020-10-29 13:31:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:50,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:51,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:52,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:52,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:52,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:53,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:55,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:55,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:31:55,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:31:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:31:55,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:55,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:31:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:55,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 13:31:55,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:57,401 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:31:57,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:57,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:57,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:57,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:57,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:31:57,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:57,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:57,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:57,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:57,490 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 13:31:57,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82592827] [2020-10-29 13:31:57,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:57,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:31:57,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994353924] [2020-10-29 13:31:57,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:31:57,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:57,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:31:57,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:31:57,492 INFO L87 Difference]: Start difference. First operand 1826 states and 2624 transitions. Second operand 8 states. [2020-10-29 13:31:59,294 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:32:04,941 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:32:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:07,091 INFO L93 Difference]: Finished difference Result 3630 states and 5325 transitions. [2020-10-29 13:32:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:32:07,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-29 13:32:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:07,103 INFO L225 Difference]: With dead ends: 3630 [2020-10-29 13:32:07,103 INFO L226 Difference]: Without dead ends: 3042 [2020-10-29 13:32:07,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:32:07,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2020-10-29 13:32:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1826. [2020-10-29 13:32:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1826 states. [2020-10-29 13:32:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2622 transitions. [2020-10-29 13:32:07,308 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2622 transitions. Word has length 96 [2020-10-29 13:32:07,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:07,308 INFO L481 AbstractCegarLoop]: Abstraction has 1826 states and 2622 transitions. [2020-10-29 13:32:07,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:32:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2622 transitions. [2020-10-29 13:32:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:32:07,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:07,312 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] [2020-10-29 13:32:07,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:32:07,312 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:07,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1889347060, now seen corresponding path program 1 times [2020-10-29 13:32:07,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:07,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567876050] [2020-10-29 13:32:07,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:07,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:08,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:08,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:09,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:10,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:12,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:12,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:32:12,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:32:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:32:12,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:12,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:32:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 13:32:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:14,309 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:32:14,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:14,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:14,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:14,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:32:14,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:14,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:14,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:14,410 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 13:32:14,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567876050] [2020-10-29 13:32:14,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:14,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:32:14,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882087302] [2020-10-29 13:32:14,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:32:14,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:14,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:32:14,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:32:14,412 INFO L87 Difference]: Start difference. First operand 1826 states and 2622 transitions. Second operand 8 states. [2020-10-29 13:32:16,257 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 509 [2020-10-29 13:32:20,336 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:32:21,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:21,301 INFO L93 Difference]: Finished difference Result 3108 states and 4500 transitions. [2020-10-29 13:32:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:32:21,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-29 13:32:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:21,308 INFO L225 Difference]: With dead ends: 3108 [2020-10-29 13:32:21,308 INFO L226 Difference]: Without dead ends: 1949 [2020-10-29 13:32:21,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:32:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-10-29 13:32:21,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1234. [2020-10-29 13:32:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-10-29 13:32:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1770 transitions. [2020-10-29 13:32:21,468 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1770 transitions. Word has length 96 [2020-10-29 13:32:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:21,469 INFO L481 AbstractCegarLoop]: Abstraction has 1234 states and 1770 transitions. [2020-10-29 13:32:21,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:32:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1770 transitions. [2020-10-29 13:32:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:32:21,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:21,471 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] [2020-10-29 13:32:21,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:32:21,472 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:21,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:21,472 INFO L82 PathProgramCache]: Analyzing trace with hash 106538421, now seen corresponding path program 1 times [2020-10-29 13:32:21,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:21,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64484915] [2020-10-29 13:32:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:21,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:24,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:26,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:26,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 13:32:26,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:32:26,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:32:26,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:26,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:26,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:32:26,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:26,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 13:32:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:28,373 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:32:28,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:28,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:28,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:28,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:28,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:28,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:32:28,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:28,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:28,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:28,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:28,440 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 13:32:28,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64484915] [2020-10-29 13:32:28,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:28,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:32:28,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548459526] [2020-10-29 13:32:28,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:32:28,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:28,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:32:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:32:28,442 INFO L87 Difference]: Start difference. First operand 1234 states and 1770 transitions. Second operand 8 states. [2020-10-29 13:32:30,321 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:32:34,625 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:32:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:36,754 INFO L93 Difference]: Finished difference Result 3967 states and 5853 transitions. [2020-10-29 13:32:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:32:36,754 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-10-29 13:32:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:36,769 INFO L225 Difference]: With dead ends: 3967 [2020-10-29 13:32:36,770 INFO L226 Difference]: Without dead ends: 3322 [2020-10-29 13:32:36,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:32:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2020-10-29 13:32:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 1234. [2020-10-29 13:32:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-10-29 13:32:36,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1769 transitions. [2020-10-29 13:32:36,976 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1769 transitions. Word has length 98 [2020-10-29 13:32:36,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:36,977 INFO L481 AbstractCegarLoop]: Abstraction has 1234 states and 1769 transitions. [2020-10-29 13:32:36,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:32:36,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1769 transitions. [2020-10-29 13:32:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:32:36,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:36,979 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] [2020-10-29 13:32:36,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:32:36,979 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:36,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:36,980 INFO L82 PathProgramCache]: Analyzing trace with hash -881244798, now seen corresponding path program 1 times [2020-10-29 13:32:36,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:36,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306562262] [2020-10-29 13:32:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:37,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:37,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:39,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:42,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:42,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 13:32:42,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:32:42,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:32:42,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:42,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:32:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 13:32:42,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:43,836 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 496 [2020-10-29 13:32:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:43,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:43,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:43,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:32:43,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:43,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:43,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:43,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:43,913 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 13:32:43,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306562262] [2020-10-29 13:32:43,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:43,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:32:43,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185196221] [2020-10-29 13:32:43,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:32:43,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:43,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:32:43,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:32:43,915 INFO L87 Difference]: Start difference. First operand 1234 states and 1769 transitions. Second operand 8 states. [2020-10-29 13:32:45,799 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 508 [2020-10-29 13:32:50,152 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 504 [2020-10-29 13:32:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:52,084 INFO L93 Difference]: Finished difference Result 3019 states and 4449 transitions. [2020-10-29 13:32:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:32:52,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-10-29 13:32:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:52,092 INFO L225 Difference]: With dead ends: 3019 [2020-10-29 13:32:52,092 INFO L226 Difference]: Without dead ends: 2435 [2020-10-29 13:32:52,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:32:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2020-10-29 13:32:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 1234. [2020-10-29 13:32:52,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1234 states. [2020-10-29 13:32:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1767 transitions. [2020-10-29 13:32:52,253 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1767 transitions. Word has length 98 [2020-10-29 13:32:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:52,254 INFO L481 AbstractCegarLoop]: Abstraction has 1234 states and 1767 transitions. [2020-10-29 13:32:52,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:32:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1767 transitions. [2020-10-29 13:32:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:32:52,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:52,257 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] [2020-10-29 13:32:52,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:32:52,257 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:52,258 INFO L82 PathProgramCache]: Analyzing trace with hash 291017886, now seen corresponding path program 1 times [2020-10-29 13:32:52,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:52,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339889023] [2020-10-29 13:32:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:52,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:52,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:53,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:53,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking...