/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:01:31,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:01:31,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:01:31,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:01:31,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:01:31,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:01:31,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:01:31,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:01:31,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:01:31,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:01:31,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:01:31,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:01:31,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:01:31,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:01:31,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:01:31,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:01:31,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:01:31,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:01:31,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:01:31,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:01:31,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:01:31,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:01:31,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:01:31,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:01:31,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:01:31,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:01:31,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:01:31,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:01:31,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:01:31,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:01:31,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:01:31,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:01:31,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:01:31,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:01:31,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:01:31,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:01:31,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:01:31,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:01:31,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:01:31,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:01:31,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:01:31,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 06:01:31,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:01:31,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:01:31,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:01:31,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:01:31,378 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:01:31,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:01:31,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:01:31,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:01:31,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:01:31,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:01:31,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:01:31,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:01:31,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:01:31,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:01:31,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:01:31,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:01:31,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:01:31,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:01:31,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:01:31,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:01:31,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:01:31,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:01:31,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:01:31,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:01:31,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:01:31,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:01:31,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:01:31,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:01:31,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:01:31,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:01:31,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:01:31,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:01:31,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:01:31,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:01:31,815 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:01:31,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:01:31,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7faf75bd7/31a951fd0aad4f72a9ea224304d6d580/FLAG26671a025 [2020-10-27 06:01:32,834 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:01:32,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:01:32,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7faf75bd7/31a951fd0aad4f72a9ea224304d6d580/FLAG26671a025 [2020-10-27 06:01:32,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7faf75bd7/31a951fd0aad4f72a9ea224304d6d580 [2020-10-27 06:01:32,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:01:32,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:01:32,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:01:32,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:01:32,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:01:32,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:01:32" (1/1) ... [2020-10-27 06:01:32,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393e8100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:32, skipping insertion in model container [2020-10-27 06:01:32,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:01:32" (1/1) ... [2020-10-27 06:01:32,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:01:33,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:01:34,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:01:34,559 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:01:35,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:01:35,390 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:01:35,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35 WrapperNode [2020-10-27 06:01:35,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:01:35,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:01:35,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:01:35,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:01:35,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (1/1) ... [2020-10-27 06:01:35,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (1/1) ... [2020-10-27 06:01:35,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (1/1) ... [2020-10-27 06:01:35,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (1/1) ... [2020-10-27 06:01:35,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (1/1) ... [2020-10-27 06:01:35,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (1/1) ... [2020-10-27 06:01:35,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (1/1) ... [2020-10-27 06:01:35,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:01:35,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:01:35,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:01:35,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:01:35,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:01:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:01:35,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:01:35,717 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:01:35,717 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:01:35,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:01:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:01:35,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:01:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:01:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:01:35,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:01:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:01:35,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:01:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:01:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:01:35,721 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:01:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:01:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:01:35,722 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:01:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:01:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:01:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:01:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:01:35,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:01:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:01:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:01:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:01:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:01:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:01:35,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:01:39,484 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:01:39,485 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:01:39,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:01:39 BoogieIcfgContainer [2020-10-27 06:01:39,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:01:39,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:01:39,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:01:39,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:01:39,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:01:32" (1/3) ... [2020-10-27 06:01:39,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca66481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:01:39, skipping insertion in model container [2020-10-27 06:01:39,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:01:35" (2/3) ... [2020-10-27 06:01:39,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca66481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:01:39, skipping insertion in model container [2020-10-27 06:01:39,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:01:39" (3/3) ... [2020-10-27 06:01:39,502 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:01:39,516 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:01:39,524 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:01:39,539 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:01:39,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:01:39,586 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:01:39,587 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:01:39,587 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:01:39,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:01:39,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:01:39,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:01:39,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:01:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states. [2020-10-27 06:01:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-27 06:01:39,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:39,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:01:39,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:39,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:39,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2121080999, now seen corresponding path program 1 times [2020-10-27 06:01:39,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:39,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337011238] [2020-10-27 06:01:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:42,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:42,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:45,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:45,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-27 06:01:45,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:01:45,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 06:01:45,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:01:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 06:01:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:01:46,978 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:01:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:47,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:47,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:47,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:47,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 06:01:47,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:47,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:47,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337011238] [2020-10-27 06:01:47,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:47,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:47,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905798285] [2020-10-27 06:01:47,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:47,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:47,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:47,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:47,344 INFO L87 Difference]: Start difference. First operand 1008 states. Second operand 5 states. [2020-10-27 06:01:58,081 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:02:01,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:01,170 INFO L93 Difference]: Finished difference Result 2907 states and 5242 transitions. [2020-10-27 06:02:01,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:02:01,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-27 06:02:01,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:01,217 INFO L225 Difference]: With dead ends: 2907 [2020-10-27 06:02:01,218 INFO L226 Difference]: Without dead ends: 1920 [2020-10-27 06:02:01,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:02:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2020-10-27 06:02:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1864. [2020-10-27 06:02:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2020-10-27 06:02:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2864 transitions. [2020-10-27 06:02:01,435 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2864 transitions. Word has length 313 [2020-10-27 06:02:01,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:01,437 INFO L481 AbstractCegarLoop]: Abstraction has 1864 states and 2864 transitions. [2020-10-27 06:02:01,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:02:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2864 transitions. [2020-10-27 06:02:01,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-27 06:02:01,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:01,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:02:01,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:02:01,448 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:01,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:01,449 INFO L82 PathProgramCache]: Analyzing trace with hash -226924444, now seen corresponding path program 1 times [2020-10-27 06:02:01,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:01,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609772622] [2020-10-27 06:02:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:03,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:05,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:06,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:06,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 06:02:06,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 06:02:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:02:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:02:06,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:02:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 06:02:06,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:07,656 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:02:07,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:07,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:07,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:07,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:07,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 06:02:07,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:02:07,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:07,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:02:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:02:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:08,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609772622] [2020-10-27 06:02:08,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:08,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:02:08,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865784927] [2020-10-27 06:02:08,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:02:08,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:08,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:02:08,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:02:08,069 INFO L87 Difference]: Start difference. First operand 1864 states and 2864 transitions. Second operand 5 states. [2020-10-27 06:02:17,026 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:02:19,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:19,982 INFO L93 Difference]: Finished difference Result 5435 states and 8323 transitions. [2020-10-27 06:02:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:02:19,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-27 06:02:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:20,004 INFO L225 Difference]: With dead ends: 5435 [2020-10-27 06:02:20,005 INFO L226 Difference]: Without dead ends: 3630 [2020-10-27 06:02:20,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:02:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2020-10-27 06:02:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 3582. [2020-10-27 06:02:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3582 states. [2020-10-27 06:02:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 5471 transitions. [2020-10-27 06:02:20,187 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 5471 transitions. Word has length 315 [2020-10-27 06:02:20,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:20,188 INFO L481 AbstractCegarLoop]: Abstraction has 3582 states and 5471 transitions. [2020-10-27 06:02:20,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:02:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 5471 transitions. [2020-10-27 06:02:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 06:02:20,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:20,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:02:20,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:02:20,201 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:20,201 INFO L82 PathProgramCache]: Analyzing trace with hash -457546024, now seen corresponding path program 1 times [2020-10-27 06:02:20,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:20,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474517579] [2020-10-27 06:02:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:20,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:20,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:21,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:21,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:21,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:23,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:23,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:23,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:25,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:25,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-27 06:02:25,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:02:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-27 06:02:25,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:02:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:02:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 06:02:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:26,319 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:02:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:26,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:26,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:26,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:26,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:26,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 06:02:26,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:02:26,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:26,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:02:26,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:26,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474517579] [2020-10-27 06:02:26,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:26,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:02:26,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845298155] [2020-10-27 06:02:26,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:02:26,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:26,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:02:26,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:02:26,618 INFO L87 Difference]: Start difference. First operand 3582 states and 5471 transitions. Second operand 5 states. [2020-10-27 06:02:36,072 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:02:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:38,952 INFO L93 Difference]: Finished difference Result 10544 states and 16071 transitions. [2020-10-27 06:02:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:02:38,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-27 06:02:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:39,033 INFO L225 Difference]: With dead ends: 10544 [2020-10-27 06:02:39,034 INFO L226 Difference]: Without dead ends: 7019 [2020-10-27 06:02:39,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:02:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7019 states. [2020-10-27 06:02:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7019 to 6827. [2020-10-27 06:02:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6827 states. [2020-10-27 06:02:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6827 states to 6827 states and 10365 transitions. [2020-10-27 06:02:39,369 INFO L78 Accepts]: Start accepts. Automaton has 6827 states and 10365 transitions. Word has length 317 [2020-10-27 06:02:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:39,369 INFO L481 AbstractCegarLoop]: Abstraction has 6827 states and 10365 transitions. [2020-10-27 06:02:39,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:02:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6827 states and 10365 transitions. [2020-10-27 06:02:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-27 06:02:39,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:39,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:02:39,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:02:39,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:39,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:39,390 INFO L82 PathProgramCache]: Analyzing trace with hash 235063992, now seen corresponding path program 1 times [2020-10-27 06:02:39,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:39,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428617659] [2020-10-27 06:02:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:39,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:39,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:39,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:40,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:41,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:42,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:44,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:44,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-27 06:02:44,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:02:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-27 06:02:44,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:02:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:02:44,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 06:02:44,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:45,669 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:02:45,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:45,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:45,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:45,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:45,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 06:02:45,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:02:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:45,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:02:45,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:45,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428617659] [2020-10-27 06:02:45,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:45,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:02:45,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349465942] [2020-10-27 06:02:45,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:02:45,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:45,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:02:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:02:45,862 INFO L87 Difference]: Start difference. First operand 6827 states and 10365 transitions. Second operand 5 states. [2020-10-27 06:02:55,372 WARN L193 SmtUtils]: Spent 998.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:02:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:58,278 INFO L93 Difference]: Finished difference Result 20085 states and 30439 transitions. [2020-10-27 06:02:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:02:58,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-27 06:02:58,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:58,340 INFO L225 Difference]: With dead ends: 20085 [2020-10-27 06:02:58,341 INFO L226 Difference]: Without dead ends: 13397 [2020-10-27 06:02:58,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:02:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13397 states. [2020-10-27 06:02:59,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13397 to 13205. [2020-10-27 06:02:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13205 states. [2020-10-27 06:02:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13205 states to 13205 states and 19903 transitions. [2020-10-27 06:02:59,056 INFO L78 Accepts]: Start accepts. Automaton has 13205 states and 19903 transitions. Word has length 319 [2020-10-27 06:02:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:59,056 INFO L481 AbstractCegarLoop]: Abstraction has 13205 states and 19903 transitions. [2020-10-27 06:02:59,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:02:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 13205 states and 19903 transitions. [2020-10-27 06:02:59,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-27 06:02:59,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:59,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:02:59,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:02:59,090 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:59,091 INFO L82 PathProgramCache]: Analyzing trace with hash 894658057, now seen corresponding path program 1 times [2020-10-27 06:02:59,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:59,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591825661] [2020-10-27 06:02:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:59,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:59,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:59,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:59,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:59,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:00,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:04,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:04,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-27 06:03:04,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 06:03:04,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 06:03:04,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:03:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:03:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 06:03:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:05,283 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:03:05,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:03:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:05,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:03:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:03:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 06:03:05,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:03:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:03:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:03:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:03:05,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591825661] [2020-10-27 06:03:05,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:03:05,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:03:05,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672687998] [2020-10-27 06:03:05,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:03:05,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:03:05,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:03:05,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:03:05,533 INFO L87 Difference]: Start difference. First operand 13205 states and 19903 transitions. Second operand 5 states. [2020-10-27 06:03:15,695 WARN L193 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:03:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:03:18,747 INFO L93 Difference]: Finished difference Result 38839 states and 58433 transitions. [2020-10-27 06:03:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:03:18,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2020-10-27 06:03:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:03:18,808 INFO L225 Difference]: With dead ends: 38839 [2020-10-27 06:03:18,808 INFO L226 Difference]: Without dead ends: 25869 [2020-10-27 06:03:18,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:03:18,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25869 states. [2020-10-27 06:03:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25869 to 25677. [2020-10-27 06:03:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25677 states. [2020-10-27 06:03:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25677 states to 25677 states and 38419 transitions. [2020-10-27 06:03:19,864 INFO L78 Accepts]: Start accepts. Automaton has 25677 states and 38419 transitions. Word has length 321 [2020-10-27 06:03:19,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:03:19,865 INFO L481 AbstractCegarLoop]: Abstraction has 25677 states and 38419 transitions. [2020-10-27 06:03:19,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:03:19,865 INFO L276 IsEmpty]: Start isEmpty. Operand 25677 states and 38419 transitions. [2020-10-27 06:03:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-27 06:03:19,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:03:19,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:03:19,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:03:19,920 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:03:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:03:19,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1327087203, now seen corresponding path program 1 times [2020-10-27 06:03:19,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:03:19,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354446354] [2020-10-27 06:03:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:03:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:20,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:25,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:25,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-27 06:03:25,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:03:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 06:03:25,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:03:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:03:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 06:03:25,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:26,248 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:03:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:03:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:26,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:26,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:26,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:03:26,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:03:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:03:26,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:03:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:03:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:03:26,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:03:26,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354446354] [2020-10-27 06:03:26,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:03:26,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:03:26,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088421229] [2020-10-27 06:03:26,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:03:26,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:03:26,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:03:26,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:03:26,452 INFO L87 Difference]: Start difference. First operand 25677 states and 38419 transitions. Second operand 5 states. [2020-10-27 06:03:38,151 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:03:41,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:03:41,796 INFO L93 Difference]: Finished difference Result 75380 states and 112586 transitions. [2020-10-27 06:03:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:03:41,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2020-10-27 06:03:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:03:41,911 INFO L225 Difference]: With dead ends: 75380 [2020-10-27 06:03:41,911 INFO L226 Difference]: Without dead ends: 50496 [2020-10-27 06:03:41,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:03:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50496 states. [2020-10-27 06:03:44,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50496 to 50304. [2020-10-27 06:03:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50304 states. [2020-10-27 06:03:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50304 states to 50304 states and 74732 transitions. [2020-10-27 06:03:44,738 INFO L78 Accepts]: Start accepts. Automaton has 50304 states and 74732 transitions. Word has length 323 [2020-10-27 06:03:44,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:03:44,738 INFO L481 AbstractCegarLoop]: Abstraction has 50304 states and 74732 transitions. [2020-10-27 06:03:44,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:03:44,739 INFO L276 IsEmpty]: Start isEmpty. Operand 50304 states and 74732 transitions. [2020-10-27 06:03:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-27 06:03:44,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:03:44,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:03:44,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:03:44,817 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:03:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:03:44,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2019171494, now seen corresponding path program 1 times [2020-10-27 06:03:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:03:44,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901556076] [2020-10-27 06:03:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:03:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:45,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:45,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:45,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:45,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:49,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:49,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-27 06:03:49,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 06:03:49,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:03:49,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:03:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:03:49,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 06:03:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:50,986 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:03:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:03:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:50,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:03:51,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:03:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:03:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:03:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:03:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:03:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:03:51,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901556076] [2020-10-27 06:03:51,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:03:51,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:03:51,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940138441] [2020-10-27 06:03:51,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:03:51,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:03:51,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:03:51,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:03:51,137 INFO L87 Difference]: Start difference. First operand 50304 states and 74732 transitions. Second operand 5 states. [2020-10-27 06:04:03,171 WARN L193 SmtUtils]: Spent 972.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:04:07,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:04:07,411 INFO L93 Difference]: Finished difference Result 146708 states and 217460 transitions. [2020-10-27 06:04:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:04:07,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-27 06:04:07,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:04:07,619 INFO L225 Difference]: With dead ends: 146708 [2020-10-27 06:04:07,620 INFO L226 Difference]: Without dead ends: 97812 [2020-10-27 06:04:07,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:04:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97812 states. [2020-10-27 06:04:12,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97812 to 97620. [2020-10-27 06:04:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97620 states. [2020-10-27 06:04:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97620 states to 97620 states and 143770 transitions. [2020-10-27 06:04:12,459 INFO L78 Accepts]: Start accepts. Automaton has 97620 states and 143770 transitions. Word has length 325 [2020-10-27 06:04:12,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:04:12,460 INFO L481 AbstractCegarLoop]: Abstraction has 97620 states and 143770 transitions. [2020-10-27 06:04:12,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:04:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 97620 states and 143770 transitions. [2020-10-27 06:04:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-27 06:04:12,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:04:12,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:04:12,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:04:12,757 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:04:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:04:12,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1841762548, now seen corresponding path program 1 times [2020-10-27 06:04:12,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:04:12,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016580603] [2020-10-27 06:04:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:04:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:12,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:17,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 06:04:17,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:04:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 06:04:17,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:04:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:04:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 06:04:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:04:18,913 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:04:18,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:04:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:18,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:18,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:18,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:04:18,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:04:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 06:04:18,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:04:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:04:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:04:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:04:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:04:19,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016580603] [2020-10-27 06:04:19,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:04:19,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:04:19,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732845032] [2020-10-27 06:04:19,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:04:19,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:04:19,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:04:19,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:04:19,086 INFO L87 Difference]: Start difference. First operand 97620 states and 143770 transitions. Second operand 5 states. [2020-10-27 06:04:36,981 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 358 [2020-10-27 06:04:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:04:42,586 INFO L93 Difference]: Finished difference Result 285169 states and 418539 transitions. [2020-10-27 06:04:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:04:42,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2020-10-27 06:04:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:04:43,065 INFO L225 Difference]: With dead ends: 285169 [2020-10-27 06:04:43,065 INFO L226 Difference]: Without dead ends: 191676 [2020-10-27 06:04:43,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:04:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191676 states. [2020-10-27 06:04:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191676 to 191592. [2020-10-27 06:04:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191592 states. [2020-10-27 06:04:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191592 states to 191592 states and 279641 transitions. [2020-10-27 06:04:54,359 INFO L78 Accepts]: Start accepts. Automaton has 191592 states and 279641 transitions. Word has length 327 [2020-10-27 06:04:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:04:54,360 INFO L481 AbstractCegarLoop]: Abstraction has 191592 states and 279641 transitions. [2020-10-27 06:04:54,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:04:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 191592 states and 279641 transitions. [2020-10-27 06:04:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-27 06:04:54,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:04:54,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:04:54,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:04:54,562 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:04:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:04:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1383133001, now seen corresponding path program 1 times [2020-10-27 06:04:54,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:04:54,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049353571] [2020-10-27 06:04:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:04:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:04:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:54,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:04:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:04:59,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 06:04:59,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:04:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 06:04:59,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:04:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:04:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:04:59,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-27 06:04:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:00,683 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2020-10-27 06:05:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:05:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:05:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:05:00,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:05:00,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:05:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:05:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:05:00,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:05:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:05:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:05:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:05:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:05:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:05:00,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049353571] [2020-10-27 06:05:00,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:05:00,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:05:00,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812417080] [2020-10-27 06:05:00,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:05:00,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:05:00,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:05:00,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:05:00,913 INFO L87 Difference]: Start difference. First operand 191592 states and 279641 transitions. Second operand 5 states.