/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:10:38,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:10:38,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:10:38,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:10:38,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:10:38,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:10:38,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:10:38,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:10:38,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:10:38,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:10:38,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:10:38,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:10:38,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:10:38,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:10:38,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:10:38,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:10:38,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:10:38,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:10:38,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:10:38,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:10:38,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:10:38,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:10:38,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:10:38,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:10:38,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:10:38,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:10:38,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:10:38,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:10:38,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:10:38,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:10:38,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:10:38,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:10:38,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:10:38,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:10:38,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:10:38,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:10:38,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:10:38,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:10:38,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:10:38,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:10:38,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:10:38,366 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 13:10:38,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:10:38,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:10:38,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:10:38,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:10:38,395 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:10:38,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:10:38,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:10:38,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:10:38,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:10:38,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:10:38,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:10:38,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:10:38,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:10:38,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:10:38,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:10:38,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:10:38,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:10:38,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:10:38,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:10:38,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:10:38,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:10:38,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:10:38,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:10:38,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:10:38,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:10:38,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:10:38,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:10:38,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:10:38,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:10:38,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:10:38,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:10:38,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:10:38,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:10:38,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:10:38,826 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:10:38,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:10:38,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90cc6356b/7a70c56927604689b01acede51d10f4a/FLAG24b2876e9 [2020-10-29 13:10:39,809 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:10:39,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:10:39,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90cc6356b/7a70c56927604689b01acede51d10f4a/FLAG24b2876e9 [2020-10-29 13:10:40,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90cc6356b/7a70c56927604689b01acede51d10f4a [2020-10-29 13:10:40,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:10:40,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:10:40,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:10:40,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:10:40,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:10:40,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:10:40" (1/1) ... [2020-10-29 13:10:40,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151f1b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:40, skipping insertion in model container [2020-10-29 13:10:40,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:10:40" (1/1) ... [2020-10-29 13:10:40,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:10:40,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:10:41,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:10:41,073 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:10:41,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:10:41,338 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:10:41,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41 WrapperNode [2020-10-29 13:10:41,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:10:41,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:10:41,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:10:41,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:10:41,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (1/1) ... [2020-10-29 13:10:41,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (1/1) ... [2020-10-29 13:10:41,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (1/1) ... [2020-10-29 13:10:41,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (1/1) ... [2020-10-29 13:10:41,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (1/1) ... [2020-10-29 13:10:41,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (1/1) ... [2020-10-29 13:10:41,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (1/1) ... [2020-10-29 13:10:41,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:10:41,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:10:41,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:10:41,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:10:41,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (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 13:10:41,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:10:41,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:10:41,620 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:10:41,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:10:41,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:10:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:10:41,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:10:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:10:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:10:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:10:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:10:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:10:41,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:10:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:10:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:10:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:10:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:10:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:10:41,622 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:10:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:10:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:10:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:10:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:10:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:10:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:10:41,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:10:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:10:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:10:41,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:10:44,365 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:10:44,366 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:10:44,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:10:44 BoogieIcfgContainer [2020-10-29 13:10:44,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:10:44,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:10:44,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:10:44,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:10:44,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:10:40" (1/3) ... [2020-10-29 13:10:44,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348914d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:10:44, skipping insertion in model container [2020-10-29 13:10:44,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:10:41" (2/3) ... [2020-10-29 13:10:44,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348914d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:10:44, skipping insertion in model container [2020-10-29 13:10:44,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:10:44" (3/3) ... [2020-10-29 13:10:44,384 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-29 13:10:44,397 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:10:44,404 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:10:44,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:10:44,459 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:10:44,459 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:10:44,459 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:10:44,459 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:10:44,459 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:10:44,459 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:10:44,459 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:10:44,459 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:10:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-10-29 13:10:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 13:10:44,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:44,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:10:44,538 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:44,545 INFO L82 PathProgramCache]: Analyzing trace with hash -425219858, now seen corresponding path program 1 times [2020-10-29 13:10:44,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:44,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389989568] [2020-10-29 13:10:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:10:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:45,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:46,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:47,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:50,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:50,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 13:10:50,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:10:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5147 [2020-10-29 13:10:50,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:50,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:10:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-29 13:10:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:10:50,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:10:51,582 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:10:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:10:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:10:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:10:51,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:10:51,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:10:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:10:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 13:10:51,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:10:51,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:10:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:10:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:10:51,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:10:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:10:51,849 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 13:10:51,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389989568] [2020-10-29 13:10:51,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:10:51,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:10:51,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259544804] [2020-10-29 13:10:51,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:10:51,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:10:51,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:10:51,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:10:51,878 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 4 states. [2020-10-29 13:10:53,123 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 13:10:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:10:59,682 INFO L93 Difference]: Finished difference Result 1124 states and 2002 transitions. [2020-10-29 13:10:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:10:59,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-10-29 13:10:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:10:59,713 INFO L225 Difference]: With dead ends: 1124 [2020-10-29 13:10:59,713 INFO L226 Difference]: Without dead ends: 918 [2020-10-29 13:10:59,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:10:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-10-29 13:10:59,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 915. [2020-10-29 13:10:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-10-29 13:10:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1593 transitions. [2020-10-29 13:10:59,906 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1593 transitions. Word has length 209 [2020-10-29 13:10:59,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:10:59,912 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1593 transitions. [2020-10-29 13:10:59,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:10:59,913 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1593 transitions. [2020-10-29 13:10:59,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 13:10:59,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:10:59,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:10:59,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:10:59,922 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:10:59,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:10:59,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1579491552, now seen corresponding path program 1 times [2020-10-29 13:10:59,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:10:59,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557375548] [2020-10-29 13:10:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:00,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:03,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:04,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:04,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:05,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:05,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 13:11:05,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:11:05,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:11:05,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:05,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:11:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:11:05,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 13:11:05,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:11:06,455 WARN L193 SmtUtils]: Spent 1000.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:11:06,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:06,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:06,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:06,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 13:11:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:06,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:11:06,744 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 13:11:06,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557375548] [2020-10-29 13:11:06,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:06,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:11:06,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679432253] [2020-10-29 13:11:06,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:11:06,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:06,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:11:06,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:06,751 INFO L87 Difference]: Start difference. First operand 915 states and 1593 transitions. Second operand 5 states. [2020-10-29 13:11:15,328 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:11:15,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:15,527 INFO L93 Difference]: Finished difference Result 2613 states and 4543 transitions. [2020-10-29 13:11:15,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:11:15,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-29 13:11:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:15,546 INFO L225 Difference]: With dead ends: 2613 [2020-10-29 13:11:15,546 INFO L226 Difference]: Without dead ends: 1789 [2020-10-29 13:11:15,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:11:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2020-10-29 13:11:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1786. [2020-10-29 13:11:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2020-10-29 13:11:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 3103 transitions. [2020-10-29 13:11:15,715 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 3103 transitions. Word has length 213 [2020-10-29 13:11:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:15,716 INFO L481 AbstractCegarLoop]: Abstraction has 1786 states and 3103 transitions. [2020-10-29 13:11:15,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:11:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 3103 transitions. [2020-10-29 13:11:15,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 13:11:15,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:15,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:15,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:11:15,724 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:15,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:15,725 INFO L82 PathProgramCache]: Analyzing trace with hash 757855051, now seen corresponding path program 1 times [2020-10-29 13:11:15,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:15,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460411217] [2020-10-29 13:11:15,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:17,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:20,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:20,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:20,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 13:11:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:11:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-29 13:11:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:20,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:11:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:11:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 13:11:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:22,325 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:11:22,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:22,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:22,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:22,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:11:22,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:22,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:22,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:22,556 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 13:11:22,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460411217] [2020-10-29 13:11:22,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:22,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:11:22,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946542103] [2020-10-29 13:11:22,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:11:22,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:22,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:11:22,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:22,559 INFO L87 Difference]: Start difference. First operand 1786 states and 3103 transitions. Second operand 5 states. [2020-10-29 13:11:30,644 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:11:30,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:30,809 INFO L93 Difference]: Finished difference Result 5084 states and 8809 transitions. [2020-10-29 13:11:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:11:30,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-29 13:11:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:30,831 INFO L225 Difference]: With dead ends: 5084 [2020-10-29 13:11:30,831 INFO L226 Difference]: Without dead ends: 3444 [2020-10-29 13:11:30,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:11:30,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2020-10-29 13:11:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 3441. [2020-10-29 13:11:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3441 states. [2020-10-29 13:11:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 5941 transitions. [2020-10-29 13:11:31,073 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 5941 transitions. Word has length 213 [2020-10-29 13:11:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:31,074 INFO L481 AbstractCegarLoop]: Abstraction has 3441 states and 5941 transitions. [2020-10-29 13:11:31,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:11:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 5941 transitions. [2020-10-29 13:11:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 13:11:31,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:31,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:11:31,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:11:31,085 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:31,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:31,086 INFO L82 PathProgramCache]: Analyzing trace with hash -52422485, now seen corresponding path program 1 times [2020-10-29 13:11:31,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:31,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915645406] [2020-10-29 13:11:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:32,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:32,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:33,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:36,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:36,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 13:11:36,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:11:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-29 13:11:36,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:36,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:11:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:11:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 13:11:36,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:37,643 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:11:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:37,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:37,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:37,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:37,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:11:37,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:37,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:37,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:37,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:37,848 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 13:11:37,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915645406] [2020-10-29 13:11:37,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:37,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:11:37,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326479588] [2020-10-29 13:11:37,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:11:37,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:37,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:11:37,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:37,851 INFO L87 Difference]: Start difference. First operand 3441 states and 5941 transitions. Second operand 5 states. [2020-10-29 13:11:46,099 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:11:46,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:11:46,274 INFO L93 Difference]: Finished difference Result 10102 states and 17429 transitions. [2020-10-29 13:11:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:11:46,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-29 13:11:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:11:46,311 INFO L225 Difference]: With dead ends: 10102 [2020-10-29 13:11:46,311 INFO L226 Difference]: Without dead ends: 6768 [2020-10-29 13:11:46,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:11:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2020-10-29 13:11:46,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6765. [2020-10-29 13:11:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6765 states. [2020-10-29 13:11:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 11623 transitions. [2020-10-29 13:11:46,830 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 11623 transitions. Word has length 214 [2020-10-29 13:11:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:11:46,831 INFO L481 AbstractCegarLoop]: Abstraction has 6765 states and 11623 transitions. [2020-10-29 13:11:46,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:11:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 11623 transitions. [2020-10-29 13:11:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 13:11:46,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:11:46,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:11:46,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:11:46,851 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:11:46,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:11:46,851 INFO L82 PathProgramCache]: Analyzing trace with hash -522741351, now seen corresponding path program 1 times [2020-10-29 13:11:46,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:11:46,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622207143] [2020-10-29 13:11:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:11:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:47,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:49,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:49,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:51,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:51,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:51,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-29 13:11:51,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:11:51,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 13:11:51,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:51,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:11:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:11:51,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 13:11:51,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:53,253 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:11:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:11:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:11:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:11:53,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:11:53,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:11:53,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:11:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:11:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:11:53,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:11:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:11:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:11:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:11:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:11:53,498 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 13:11:53,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622207143] [2020-10-29 13:11:53,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:11:53,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:11:53,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449130061] [2020-10-29 13:11:53,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:11:53,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:11:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:11:53,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:11:53,500 INFO L87 Difference]: Start difference. First operand 6765 states and 11623 transitions. Second operand 5 states. [2020-10-29 13:12:02,648 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:12:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:12:02,963 INFO L93 Difference]: Finished difference Result 19868 states and 34104 transitions. [2020-10-29 13:12:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:12:02,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-29 13:12:02,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:12:03,038 INFO L225 Difference]: With dead ends: 19868 [2020-10-29 13:12:03,039 INFO L226 Difference]: Without dead ends: 13417 [2020-10-29 13:12:03,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:12:03,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13417 states. [2020-10-29 13:12:03,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13417 to 13414. [2020-10-29 13:12:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13414 states. [2020-10-29 13:12:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13414 states to 13414 states and 22964 transitions. [2020-10-29 13:12:04,002 INFO L78 Accepts]: Start accepts. Automaton has 13414 states and 22964 transitions. Word has length 215 [2020-10-29 13:12:04,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:12:04,002 INFO L481 AbstractCegarLoop]: Abstraction has 13414 states and 22964 transitions. [2020-10-29 13:12:04,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:12:04,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13414 states and 22964 transitions. [2020-10-29 13:12:04,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 13:12:04,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:12:04,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:12:04,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:12:04,035 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:12:04,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:12:04,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1009330124, now seen corresponding path program 1 times [2020-10-29 13:12:04,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:12:04,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702824100] [2020-10-29 13:12:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:12:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:04,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:04,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:05,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:05,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:05,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:09,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:09,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-29 13:12:09,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:12:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-29 13:12:09,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:09,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:12:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:12:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 13:12:09,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:10,526 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:12:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:12:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:10,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:10,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:12:10,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:12:10,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:12:10,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:10,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:10,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:12:10,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:12:10,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:12:10,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:10,674 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 13:12:10,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702824100] [2020-10-29 13:12:10,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:12:10,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:12:10,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525163141] [2020-10-29 13:12:10,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:12:10,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:12:10,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:12:10,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:12:10,677 INFO L87 Difference]: Start difference. First operand 13414 states and 22964 transitions. Second operand 5 states. [2020-10-29 13:12:19,917 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:12:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:12:20,449 INFO L93 Difference]: Finished difference Result 39483 states and 67543 transitions. [2020-10-29 13:12:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:12:20,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-29 13:12:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:12:20,519 INFO L225 Difference]: With dead ends: 39483 [2020-10-29 13:12:20,520 INFO L226 Difference]: Without dead ends: 26352 [2020-10-29 13:12:20,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:12:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26352 states. [2020-10-29 13:12:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26352 to 26349. [2020-10-29 13:12:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26349 states. [2020-10-29 13:12:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26349 states to 26349 states and 44917 transitions. [2020-10-29 13:12:22,642 INFO L78 Accepts]: Start accepts. Automaton has 26349 states and 44917 transitions. Word has length 215 [2020-10-29 13:12:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:12:22,643 INFO L481 AbstractCegarLoop]: Abstraction has 26349 states and 44917 transitions. [2020-10-29 13:12:22,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:12:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 26349 states and 44917 transitions. [2020-10-29 13:12:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-29 13:12:22,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:12:22,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:12:22,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:12:22,709 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:12:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:12:22,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2035629523, now seen corresponding path program 1 times [2020-10-29 13:12:22,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:12:22,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352145146] [2020-10-29 13:12:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:12:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:24,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:25,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:26,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:27,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 13:12:27,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:12:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:12:27,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:27,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:12:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:12:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-29 13:12:27,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:29,077 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:12:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:12:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:29,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:12:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:29,253 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 13:12:29,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352145146] [2020-10-29 13:12:29,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:12:29,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:12:29,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341227248] [2020-10-29 13:12:29,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:12:29,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:12:29,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:12:29,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:12:29,255 INFO L87 Difference]: Start difference. First operand 26349 states and 44917 transitions. Second operand 5 states. [2020-10-29 13:12:40,602 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:12:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:12:41,676 INFO L93 Difference]: Finished difference Result 77625 states and 132274 transitions. [2020-10-29 13:12:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:12:41,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-29 13:12:41,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:12:41,787 INFO L225 Difference]: With dead ends: 77625 [2020-10-29 13:12:41,788 INFO L226 Difference]: Without dead ends: 51746 [2020-10-29 13:12:41,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:12:41,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51746 states. [2020-10-29 13:12:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51746 to 51743. [2020-10-29 13:12:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51743 states. [2020-10-29 13:12:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51743 states to 51743 states and 87895 transitions. [2020-10-29 13:12:46,728 INFO L78 Accepts]: Start accepts. Automaton has 51743 states and 87895 transitions. Word has length 216 [2020-10-29 13:12:46,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:12:46,729 INFO L481 AbstractCegarLoop]: Abstraction has 51743 states and 87895 transitions. [2020-10-29 13:12:46,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:12:46,729 INFO L276 IsEmpty]: Start isEmpty. Operand 51743 states and 87895 transitions. [2020-10-29 13:12:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 13:12:46,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:12:46,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:12:46,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:12:46,959 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:12:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:12:46,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2090604160, now seen corresponding path program 1 times [2020-10-29 13:12:46,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:12:46,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87676771] [2020-10-29 13:12:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:12:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:47,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:49,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:49,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:52,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:52,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 13:12:52,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:12:52,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 13:12:52,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:52,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:12:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:12:52,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 13:12:52,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:53,405 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:12:53,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:12:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:12:53,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:12:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:12:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:12:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:12:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 13:12:53,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:12:53,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:12:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:12:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:12:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:12:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:12:53,618 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 13:12:53,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87676771] [2020-10-29 13:12:53,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:12:53,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:12:53,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745766927] [2020-10-29 13:12:53,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:12:53,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:12:53,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:12:53,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:12:53,620 INFO L87 Difference]: Start difference. First operand 51743 states and 87895 transitions. Second operand 8 states. [2020-10-29 13:12:54,863 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:13:05,525 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 13:13:10,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:13:10,003 INFO L93 Difference]: Finished difference Result 90797 states and 153591 transitions. [2020-10-29 13:13:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:13:10,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-29 13:13:10,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:13:10,105 INFO L225 Difference]: With dead ends: 90797 [2020-10-29 13:13:10,105 INFO L226 Difference]: Without dead ends: 69226 [2020-10-29 13:13:10,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:13:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69226 states. [2020-10-29 13:13:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69226 to 58047. [2020-10-29 13:13:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58047 states. [2020-10-29 13:13:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58047 states to 58047 states and 98103 transitions. [2020-10-29 13:13:15,828 INFO L78 Accepts]: Start accepts. Automaton has 58047 states and 98103 transitions. Word has length 217 [2020-10-29 13:13:15,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:13:15,828 INFO L481 AbstractCegarLoop]: Abstraction has 58047 states and 98103 transitions. [2020-10-29 13:13:15,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:13:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand 58047 states and 98103 transitions. [2020-10-29 13:13:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 13:13:16,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:13:16,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:13:16,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:13:16,043 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:13:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:13:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1214675383, now seen corresponding path program 1 times [2020-10-29 13:13:16,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:13:16,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85868091] [2020-10-29 13:13:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:13:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:13:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:17,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:17,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:17,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:18,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:19,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:21,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:13:21,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 13:13:21,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:13:21,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-29 13:13:21,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:13:21,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:13:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:13:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:13:21,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-29 13:13:21,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:13:22,555 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:13:22,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:13:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:13:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:22,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:13:22,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:13:22,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:13:22,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:13:22,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:13:22,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:13:22,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:13:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:13:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:13:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:13:22,704 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 13:13:22,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85868091] [2020-10-29 13:13:22,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:13:22,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:13:22,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206621987] [2020-10-29 13:13:22,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:13:22,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:13:22,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:13:22,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:13:22,706 INFO L87 Difference]: Start difference. First operand 58047 states and 98103 transitions. Second operand 8 states. [2020-10-29 13:13:24,023 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:13:35,072 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 13:13:39,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:13:39,948 INFO L93 Difference]: Finished difference Result 75421 states and 126747 transitions. [2020-10-29 13:13:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:13:39,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-29 13:13:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:13:40,033 INFO L225 Difference]: With dead ends: 75421 [2020-10-29 13:13:40,033 INFO L226 Difference]: Without dead ends: 69802 [2020-10-29 13:13:40,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:13:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69802 states. [2020-10-29 13:13:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69802 to 58239. [2020-10-29 13:13:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58239 states. [2020-10-29 13:13:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58239 states to 58239 states and 98391 transitions. [2020-10-29 13:13:45,921 INFO L78 Accepts]: Start accepts. Automaton has 58239 states and 98391 transitions. Word has length 217 [2020-10-29 13:13:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:13:45,921 INFO L481 AbstractCegarLoop]: Abstraction has 58239 states and 98391 transitions. [2020-10-29 13:13:45,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:13:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 58239 states and 98391 transitions. [2020-10-29 13:13:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 13:13:46,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:13:46,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:13:46,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:13:46,092 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:13:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:13:46,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2000744168, now seen corresponding path program 1 times [2020-10-29 13:13:46,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:13:46,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150689347] [2020-10-29 13:13:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:13:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:13:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:46,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:47,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:48,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:13:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-29 13:13:51,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:13:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-29 13:13:51,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:13:51,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:13:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:13:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:13:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-29 13:13:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:13:52,718 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-29 13:13:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:13:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:13:52,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:13:52,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:13:52,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:13:52,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:13:52,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:13:52,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:13:52,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:13:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:13:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:13:52,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:13:52,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:13:52,856 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 13:13:52,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150689347] [2020-10-29 13:13:52,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:13:52,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:13:52,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554702264] [2020-10-29 13:13:52,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:13:52,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:13:52,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:13:52,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:13:52,859 INFO L87 Difference]: Start difference. First operand 58239 states and 98391 transitions. Second operand 8 states. [2020-10-29 13:13:54,178 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 13:14:04,846 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 13:14:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:14:09,747 INFO L93 Difference]: Finished difference Result 76017 states and 127715 transitions. [2020-10-29 13:14:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:14:09,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-29 13:14:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:14:09,836 INFO L225 Difference]: With dead ends: 76017 [2020-10-29 13:14:09,836 INFO L226 Difference]: Without dead ends: 70398 [2020-10-29 13:14:09,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:14:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70398 states. [2020-10-29 13:14:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70398 to 58335. [2020-10-29 13:14:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58335 states. [2020-10-29 13:14:15,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58335 states to 58335 states and 98519 transitions. [2020-10-29 13:14:15,659 INFO L78 Accepts]: Start accepts. Automaton has 58335 states and 98519 transitions. Word has length 217 [2020-10-29 13:14:15,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:14:15,659 INFO L481 AbstractCegarLoop]: Abstraction has 58335 states and 98519 transitions. [2020-10-29 13:14:15,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:14:15,659 INFO L276 IsEmpty]: Start isEmpty. Operand 58335 states and 98519 transitions. [2020-10-29 13:14:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 13:14:15,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:14:15,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:14:15,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:14:15,702 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:14:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:14:15,703 INFO L82 PathProgramCache]: Analyzing trace with hash -604645326, now seen corresponding path program 1 times [2020-10-29 13:14:15,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:14:15,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587638377] [2020-10-29 13:14:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:14:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:14:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:16,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:17,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:14:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking...