/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:09:03,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:09:03,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:09:03,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:09:03,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:09:03,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:09:03,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:09:03,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:09:03,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:09:03,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:09:03,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:09:03,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:09:03,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:09:03,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:09:03,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:09:03,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:09:03,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:09:03,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:09:03,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:09:03,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:09:03,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:09:03,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:09:03,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:09:03,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:09:03,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:09:03,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:09:03,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:09:03,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:09:03,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:09:03,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:09:03,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:09:03,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:09:03,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:09:03,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:09:03,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:09:03,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:09:03,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:09:03,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:09:03,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:09:03,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:09:03,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:09:03,524 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 [2020-10-28 19:09:03,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:09:03,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:09:03,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:09:03,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:09:03,584 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:09:03,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:09:03,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:09:03,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:09:03,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:09:03,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:09:03,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:09:03,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:09:03,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:09:03,587 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:09:03,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:09:03,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:09:03,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:09:03,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:09:03,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:09:03,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:09:03,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:09:03,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:09:03,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:09:03,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:09:03,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:09:03,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:09:03,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:09:03,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:09:03,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:09:03,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:09:04,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:09:04,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:09:04,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:09:04,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:09:04,044 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:09:04,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 19:09:04,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127ead88a/faf5f2d9ad0a4d40bb99c0c2840e5f50/FLAGacc7c67e0 [2020-10-28 19:09:04,900 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:09:04,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 19:09:04,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127ead88a/faf5f2d9ad0a4d40bb99c0c2840e5f50/FLAGacc7c67e0 [2020-10-28 19:09:05,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127ead88a/faf5f2d9ad0a4d40bb99c0c2840e5f50 [2020-10-28 19:09:05,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:09:05,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:09:05,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:09:05,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:09:05,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:09:05,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:09:05" (1/1) ... [2020-10-28 19:09:05,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2178c960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:05, skipping insertion in model container [2020-10-28 19:09:05,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:09:05" (1/1) ... [2020-10-28 19:09:05,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:09:05,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:09:05,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:09:05,892 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:09:06,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:09:06,131 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:09:06,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06 WrapperNode [2020-10-28 19:09:06,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:09:06,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:09:06,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:09:06,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:09:06,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (1/1) ... [2020-10-28 19:09:06,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (1/1) ... [2020-10-28 19:09:06,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (1/1) ... [2020-10-28 19:09:06,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (1/1) ... [2020-10-28 19:09:06,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (1/1) ... [2020-10-28 19:09:06,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (1/1) ... [2020-10-28 19:09:06,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (1/1) ... [2020-10-28 19:09:06,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:09:06,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:09:06,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:09:06,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:09:06,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (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 [2020-10-28 19:09:06,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:09:06,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:09:06,410 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:09:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:09:06,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:09:06,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:09:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:09:06,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:09:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:09:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:09:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:09:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:09:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:09:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:09:06,416 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:09:06,417 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:09:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:09:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:09:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 19:09:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 19:09:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 19:09:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:09:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:09:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:09:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:09:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:09:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:09:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:09:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:09:06,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:09:08,412 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:09:08,413 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:09:08,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:09:08 BoogieIcfgContainer [2020-10-28 19:09:08,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:09:08,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:09:08,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:09:08,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:09:08,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:09:05" (1/3) ... [2020-10-28 19:09:08,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e990e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:09:08, skipping insertion in model container [2020-10-28 19:09:08,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:09:06" (2/3) ... [2020-10-28 19:09:08,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e990e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:09:08, skipping insertion in model container [2020-10-28 19:09:08,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:09:08" (3/3) ... [2020-10-28 19:09:08,431 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 19:09:08,445 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:09:08,452 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:09:08,468 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:09:08,503 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:09:08,503 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:09:08,503 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:09:08,503 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:09:08,503 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:09:08,504 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:09:08,504 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:09:08,504 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:09:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states. [2020-10-28 19:09:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 19:09:08,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:08,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:09:08,558 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:08,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:08,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1168853078, now seen corresponding path program 1 times [2020-10-28 19:09:08,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:08,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045506819] [2020-10-28 19:09:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:09,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:09,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:10,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:10,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:13,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 19:09:13,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:09:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5069 [2020-10-28 19:09:13,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:13,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 19:09:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 19:09:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 19:09:14,696 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:09:14,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:14,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:14,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:14,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:14,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 19:09:14,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:14,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:14,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:14,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:14,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045506819] [2020-10-28 19:09:14,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:14,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:14,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528334611] [2020-10-28 19:09:14,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:14,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:14,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:14,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:14,838 INFO L87 Difference]: Start difference. First operand 496 states. Second operand 4 states. [2020-10-28 19:09:15,317 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 19:09:18,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:18,942 INFO L93 Difference]: Finished difference Result 1203 states and 1944 transitions. [2020-10-28 19:09:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:18,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-28 19:09:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:18,980 INFO L225 Difference]: With dead ends: 1203 [2020-10-28 19:09:18,981 INFO L226 Difference]: Without dead ends: 883 [2020-10-28 19:09:18,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-10-28 19:09:19,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 847. [2020-10-28 19:09:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-10-28 19:09:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1365 transitions. [2020-10-28 19:09:19,126 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1365 transitions. Word has length 124 [2020-10-28 19:09:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:19,127 INFO L481 AbstractCegarLoop]: Abstraction has 847 states and 1365 transitions. [2020-10-28 19:09:19,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1365 transitions. [2020-10-28 19:09:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 19:09:19,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:19,140 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] [2020-10-28 19:09:19,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:09:19,142 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:19,146 INFO L82 PathProgramCache]: Analyzing trace with hash 547873315, now seen corresponding path program 1 times [2020-10-28 19:09:19,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:19,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376291644] [2020-10-28 19:09:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:19,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:19,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:19,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:24,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:24,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 19:09:24,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:09:24,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:09:24,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:24,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 19:09:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:09:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:24,673 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:09:24,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:24,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:24,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:24,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 19:09:24,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:24,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:24,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376291644] [2020-10-28 19:09:24,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:24,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:24,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893644077] [2020-10-28 19:09:24,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:24,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:24,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:24,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:24,755 INFO L87 Difference]: Start difference. First operand 847 states and 1365 transitions. Second operand 4 states. [2020-10-28 19:09:25,188 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 19:09:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:28,666 INFO L93 Difference]: Finished difference Result 1943 states and 3108 transitions. [2020-10-28 19:09:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:28,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2020-10-28 19:09:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:28,677 INFO L225 Difference]: With dead ends: 1943 [2020-10-28 19:09:28,678 INFO L226 Difference]: Without dead ends: 1476 [2020-10-28 19:09:28,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-10-28 19:09:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1407. [2020-10-28 19:09:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1407 states. [2020-10-28 19:09:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 2252 transitions. [2020-10-28 19:09:28,786 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 2252 transitions. Word has length 126 [2020-10-28 19:09:28,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:28,789 INFO L481 AbstractCegarLoop]: Abstraction has 1407 states and 2252 transitions. [2020-10-28 19:09:28,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 2252 transitions. [2020-10-28 19:09:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 19:09:28,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:28,804 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] [2020-10-28 19:09:28,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:09:28,805 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:28,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:28,806 INFO L82 PathProgramCache]: Analyzing trace with hash -530270316, now seen corresponding path program 1 times [2020-10-28 19:09:28,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:28,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522057366] [2020-10-28 19:09:28,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:33,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:33,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 19:09:33,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:09:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 19:09:33,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:33,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 19:09:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 19:09:33,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:34,390 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:09:34,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:34,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:34,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:34,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:34,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:34,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:09:34,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:34,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:34,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:34,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522057366] [2020-10-28 19:09:34,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:34,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:34,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130170599] [2020-10-28 19:09:34,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:34,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:34,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:34,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:34,463 INFO L87 Difference]: Start difference. First operand 1407 states and 2252 transitions. Second operand 4 states. [2020-10-28 19:09:34,909 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:09:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:37,867 INFO L93 Difference]: Finished difference Result 3289 states and 5232 transitions. [2020-10-28 19:09:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:37,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-28 19:09:37,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:37,883 INFO L225 Difference]: With dead ends: 3289 [2020-10-28 19:09:37,884 INFO L226 Difference]: Without dead ends: 2494 [2020-10-28 19:09:37,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:37,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2020-10-28 19:09:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2359. [2020-10-28 19:09:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2359 states. [2020-10-28 19:09:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 3748 transitions. [2020-10-28 19:09:38,013 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 3748 transitions. Word has length 128 [2020-10-28 19:09:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:38,013 INFO L481 AbstractCegarLoop]: Abstraction has 2359 states and 3748 transitions. [2020-10-28 19:09:38,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 3748 transitions. [2020-10-28 19:09:38,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 19:09:38,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:38,020 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] [2020-10-28 19:09:38,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:09:38,021 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:38,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:38,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1267920278, now seen corresponding path program 1 times [2020-10-28 19:09:38,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:38,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020850320] [2020-10-28 19:09:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:38,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:38,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:43,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:43,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 19:09:43,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:09:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 19:09:43,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:43,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 19:09:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 19:09:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:43,611 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:09:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:43,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:43,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:43,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:43,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:09:43,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:43,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:43,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:09:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:43,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020850320] [2020-10-28 19:09:43,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:43,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:43,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161082693] [2020-10-28 19:09:43,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:43,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:43,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:43,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:43,714 INFO L87 Difference]: Start difference. First operand 2359 states and 3748 transitions. Second operand 4 states. [2020-10-28 19:09:44,143 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 19:09:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:48,495 INFO L93 Difference]: Finished difference Result 6523 states and 10319 transitions. [2020-10-28 19:09:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:48,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 19:09:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:48,520 INFO L225 Difference]: With dead ends: 6523 [2020-10-28 19:09:48,520 INFO L226 Difference]: Without dead ends: 4536 [2020-10-28 19:09:48,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2020-10-28 19:09:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4389. [2020-10-28 19:09:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4389 states. [2020-10-28 19:09:48,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 6927 transitions. [2020-10-28 19:09:48,764 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 6927 transitions. Word has length 130 [2020-10-28 19:09:48,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:48,764 INFO L481 AbstractCegarLoop]: Abstraction has 4389 states and 6927 transitions. [2020-10-28 19:09:48,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:48,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 6927 transitions. [2020-10-28 19:09:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 19:09:48,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:48,778 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] [2020-10-28 19:09:48,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:09:48,778 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:48,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:48,779 INFO L82 PathProgramCache]: Analyzing trace with hash -90426411, now seen corresponding path program 1 times [2020-10-28 19:09:48,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:48,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887984861] [2020-10-28 19:09:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:48,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:49,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:49,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:49,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:53,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:53,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 19:09:53,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:09:53,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 19:09:53,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:53,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:09:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 19:09:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 19:09:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:54,267 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:09:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:09:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:54,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:09:54,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:09:54,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:09:54,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:09:54,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:09:54,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:09:54,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:09:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:09:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:09:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:09:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:09:54,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887984861] [2020-10-28 19:09:54,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:09:54,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:09:54,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638829436] [2020-10-28 19:09:54,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:09:54,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:09:54,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:09:54,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:09:54,395 INFO L87 Difference]: Start difference. First operand 4389 states and 6927 transitions. Second operand 4 states. [2020-10-28 19:09:54,802 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 19:09:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:09:57,819 INFO L93 Difference]: Finished difference Result 11355 states and 17839 transitions. [2020-10-28 19:09:57,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:09:57,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 19:09:57,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:09:57,859 INFO L225 Difference]: With dead ends: 11355 [2020-10-28 19:09:57,859 INFO L226 Difference]: Without dead ends: 8296 [2020-10-28 19:09:57,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:09:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8296 states. [2020-10-28 19:09:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8296 to 7765. [2020-10-28 19:09:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7765 states. [2020-10-28 19:09:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7765 states to 7765 states and 12155 transitions. [2020-10-28 19:09:58,304 INFO L78 Accepts]: Start accepts. Automaton has 7765 states and 12155 transitions. Word has length 130 [2020-10-28 19:09:58,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:09:58,305 INFO L481 AbstractCegarLoop]: Abstraction has 7765 states and 12155 transitions. [2020-10-28 19:09:58,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:09:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 7765 states and 12155 transitions. [2020-10-28 19:09:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 19:09:58,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:09:58,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:09:58,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:09:58,328 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:09:58,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:09:58,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2091742403, now seen corresponding path program 1 times [2020-10-28 19:09:58,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:09:58,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035356136] [2020-10-28 19:09:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:09:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:09:58,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:58,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:58,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:09:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:01,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:03,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:03,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 19:10:03,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:10:03,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 19:10:03,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:03,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 19:10:03,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 19:10:03,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:03,860 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:10:03,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:03,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:03,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:03,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:03,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:10:03,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:03,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:03,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:03,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:03,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:03,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035356136] [2020-10-28 19:10:03,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:03,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:03,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085762120] [2020-10-28 19:10:03,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:03,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:03,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:03,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:03,934 INFO L87 Difference]: Start difference. First operand 7765 states and 12155 transitions. Second operand 4 states. [2020-10-28 19:10:08,268 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:10:08,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:08,276 INFO L93 Difference]: Finished difference Result 13467 states and 21071 transitions. [2020-10-28 19:10:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:08,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-28 19:10:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:08,317 INFO L225 Difference]: With dead ends: 13467 [2020-10-28 19:10:08,317 INFO L226 Difference]: Without dead ends: 7768 [2020-10-28 19:10:08,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7768 states. [2020-10-28 19:10:08,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7768 to 7765. [2020-10-28 19:10:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7765 states. [2020-10-28 19:10:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7765 states to 7765 states and 12107 transitions. [2020-10-28 19:10:08,759 INFO L78 Accepts]: Start accepts. Automaton has 7765 states and 12107 transitions. Word has length 132 [2020-10-28 19:10:08,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:08,759 INFO L481 AbstractCegarLoop]: Abstraction has 7765 states and 12107 transitions. [2020-10-28 19:10:08,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7765 states and 12107 transitions. [2020-10-28 19:10:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 19:10:08,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:08,786 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] [2020-10-28 19:10:08,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:10:08,786 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:08,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1685442012, now seen corresponding path program 1 times [2020-10-28 19:10:08,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:08,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497161175] [2020-10-28 19:10:08,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:08,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:08,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:08,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:08,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:09,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:11,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:13,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:13,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 19:10:13,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:10:13,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:10:13,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:13,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 19:10:13,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 19:10:13,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:14,354 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:10:14,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:14,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:14,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:14,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:10:14,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:14,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:14,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:14,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:14,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497161175] [2020-10-28 19:10:14,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:14,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:14,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611430793] [2020-10-28 19:10:14,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:14,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:14,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:14,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:14,440 INFO L87 Difference]: Start difference. First operand 7765 states and 12107 transitions. Second operand 4 states. [2020-10-28 19:10:14,941 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-28 19:10:18,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:18,085 INFO L93 Difference]: Finished difference Result 20803 states and 32299 transitions. [2020-10-28 19:10:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:18,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-10-28 19:10:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:18,124 INFO L225 Difference]: With dead ends: 20803 [2020-10-28 19:10:18,125 INFO L226 Difference]: Without dead ends: 14880 [2020-10-28 19:10:18,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14880 states. [2020-10-28 19:10:18,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14880 to 13821. [2020-10-28 19:10:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13821 states. [2020-10-28 19:10:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 21335 transitions. [2020-10-28 19:10:18,884 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 21335 transitions. Word has length 132 [2020-10-28 19:10:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:18,884 INFO L481 AbstractCegarLoop]: Abstraction has 13821 states and 21335 transitions. [2020-10-28 19:10:18,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 21335 transitions. [2020-10-28 19:10:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 19:10:18,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:18,923 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] [2020-10-28 19:10:18,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:10:18,924 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:18,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1827069368, now seen corresponding path program 1 times [2020-10-28 19:10:18,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:18,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377298014] [2020-10-28 19:10:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:19,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:19,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:23,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:23,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 19:10:23,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:10:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 19:10:23,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:23,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:23,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 19:10:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 19:10:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:24,399 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:10:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:24,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:24,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:10:24,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:24,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:24,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377298014] [2020-10-28 19:10:24,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:24,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:24,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44552617] [2020-10-28 19:10:24,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:24,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:24,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:24,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:24,460 INFO L87 Difference]: Start difference. First operand 13821 states and 21335 transitions. Second operand 4 states. [2020-10-28 19:10:28,703 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:10:28,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:28,713 INFO L93 Difference]: Finished difference Result 21619 states and 33371 transitions. [2020-10-28 19:10:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:28,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-28 19:10:28,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:28,749 INFO L225 Difference]: With dead ends: 21619 [2020-10-28 19:10:28,749 INFO L226 Difference]: Without dead ends: 13824 [2020-10-28 19:10:28,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13824 states. [2020-10-28 19:10:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13824 to 13821. [2020-10-28 19:10:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13821 states. [2020-10-28 19:10:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 21239 transitions. [2020-10-28 19:10:29,657 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 21239 transitions. Word has length 134 [2020-10-28 19:10:29,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:29,657 INFO L481 AbstractCegarLoop]: Abstraction has 13821 states and 21239 transitions. [2020-10-28 19:10:29,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:29,657 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 21239 transitions. [2020-10-28 19:10:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 19:10:29,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:29,688 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] [2020-10-28 19:10:29,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:10:29,688 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:29,689 INFO L82 PathProgramCache]: Analyzing trace with hash 192364297, now seen corresponding path program 1 times [2020-10-28 19:10:29,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:29,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236353339] [2020-10-28 19:10:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:29,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:29,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:34,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:34,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 19:10:34,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:10:34,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 19:10:34,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:34,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:34,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 19:10:34,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:10:34,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:35,207 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:10:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:35,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:35,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:35,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:10:35,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:35,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:35,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236353339] [2020-10-28 19:10:35,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:35,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:35,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091617257] [2020-10-28 19:10:35,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:35,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:35,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:35,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:35,251 INFO L87 Difference]: Start difference. First operand 13821 states and 21239 transitions. Second operand 4 states. [2020-10-28 19:10:39,743 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:10:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:39,760 INFO L93 Difference]: Finished difference Result 23539 states and 36171 transitions. [2020-10-28 19:10:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:39,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-10-28 19:10:39,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:39,788 INFO L225 Difference]: With dead ends: 23539 [2020-10-28 19:10:39,788 INFO L226 Difference]: Without dead ends: 13824 [2020-10-28 19:10:39,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13824 states. [2020-10-28 19:10:40,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13824 to 13821. [2020-10-28 19:10:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13821 states. [2020-10-28 19:10:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 21143 transitions. [2020-10-28 19:10:40,682 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 21143 transitions. Word has length 134 [2020-10-28 19:10:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:40,683 INFO L481 AbstractCegarLoop]: Abstraction has 13821 states and 21143 transitions. [2020-10-28 19:10:40,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 21143 transitions. [2020-10-28 19:10:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 19:10:40,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:40,712 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] [2020-10-28 19:10:40,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:10:40,712 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 958393666, now seen corresponding path program 1 times [2020-10-28 19:10:40,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:40,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616029632] [2020-10-28 19:10:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:40,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:45,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 19:10:45,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:10:45,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 19:10:45,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:45,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:10:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 19:10:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 19:10:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:46,223 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:10:46,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:46,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:46,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:46,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:10:46,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:46,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:46,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:46,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:46,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:46,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:46,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616029632] [2020-10-28 19:10:46,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:46,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:10:46,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85908082] [2020-10-28 19:10:46,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:10:46,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:46,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:10:46,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:46,278 INFO L87 Difference]: Start difference. First operand 13821 states and 21143 transitions. Second operand 5 states. [2020-10-28 19:10:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:49,340 INFO L93 Difference]: Finished difference Result 26208 states and 39929 transitions. [2020-10-28 19:10:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:49,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-28 19:10:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:49,366 INFO L225 Difference]: With dead ends: 26208 [2020-10-28 19:10:49,366 INFO L226 Difference]: Without dead ends: 13821 [2020-10-28 19:10:49,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:10:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2020-10-28 19:10:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 13821. [2020-10-28 19:10:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13821 states. [2020-10-28 19:10:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 21015 transitions. [2020-10-28 19:10:50,252 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 21015 transitions. Word has length 134 [2020-10-28 19:10:50,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:50,252 INFO L481 AbstractCegarLoop]: Abstraction has 13821 states and 21015 transitions. [2020-10-28 19:10:50,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:10:50,252 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 21015 transitions. [2020-10-28 19:10:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 19:10:50,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:50,269 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] [2020-10-28 19:10:50,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:10:50,270 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:50,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:50,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1951113364, now seen corresponding path program 1 times [2020-10-28 19:10:50,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:50,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763115016] [2020-10-28 19:10:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:50,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:52,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:53,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:53,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 19:10:53,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:10:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3115 [2020-10-28 19:10:53,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:53,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:10:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 19:10:53,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 19:10:53,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:53,836 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:10:53,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:10:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:53,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:10:53,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:10:53,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:10:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:10:53,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:10:53,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:10:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:10:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:10:53,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:10:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:10:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:10:53,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763115016] [2020-10-28 19:10:53,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:10:53,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:10:53,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017782050] [2020-10-28 19:10:53,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:10:53,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:10:53,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:10:53,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:10:53,887 INFO L87 Difference]: Start difference. First operand 13821 states and 21015 transitions. Second operand 4 states. [2020-10-28 19:10:54,294 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-10-28 19:10:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:10:57,801 INFO L93 Difference]: Finished difference Result 32972 states and 49916 transitions. [2020-10-28 19:10:57,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:10:57,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-28 19:10:57,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:10:57,846 INFO L225 Difference]: With dead ends: 32972 [2020-10-28 19:10:57,846 INFO L226 Difference]: Without dead ends: 24649 [2020-10-28 19:10:57,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:10:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24649 states. [2020-10-28 19:10:59,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24649 to 24646. [2020-10-28 19:10:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24646 states. [2020-10-28 19:10:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24646 states to 24646 states and 37112 transitions. [2020-10-28 19:10:59,270 INFO L78 Accepts]: Start accepts. Automaton has 24646 states and 37112 transitions. Word has length 135 [2020-10-28 19:10:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:10:59,270 INFO L481 AbstractCegarLoop]: Abstraction has 24646 states and 37112 transitions. [2020-10-28 19:10:59,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:10:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 24646 states and 37112 transitions. [2020-10-28 19:10:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 19:10:59,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:10:59,302 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] [2020-10-28 19:10:59,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:10:59,303 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:10:59,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:10:59,303 INFO L82 PathProgramCache]: Analyzing trace with hash 583222815, now seen corresponding path program 1 times [2020-10-28 19:10:59,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:10:59,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982285519] [2020-10-28 19:10:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:10:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:10:59,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:59,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:10:59,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:04,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:04,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 19:11:04,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:11:04,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:11:04,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:04,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 19:11:04,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 19:11:04,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:04,762 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:04,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:04,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:04,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:04,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982285519] [2020-10-28 19:11:04,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:04,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:11:04,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127819372] [2020-10-28 19:11:04,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:11:04,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:04,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:11:04,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:11:04,807 INFO L87 Difference]: Start difference. First operand 24646 states and 37112 transitions. Second operand 4 states. [2020-10-28 19:11:05,246 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:11:10,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:10,391 INFO L93 Difference]: Finished difference Result 71414 states and 107192 transitions. [2020-10-28 19:11:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:11:10,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-28 19:11:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:10,454 INFO L225 Difference]: With dead ends: 71414 [2020-10-28 19:11:10,454 INFO L226 Difference]: Without dead ends: 47018 [2020-10-28 19:11:10,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47018 states. [2020-10-28 19:11:12,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47018 to 47015. [2020-10-28 19:11:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47015 states. [2020-10-28 19:11:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47015 states to 47015 states and 70107 transitions. [2020-10-28 19:11:13,016 INFO L78 Accepts]: Start accepts. Automaton has 47015 states and 70107 transitions. Word has length 138 [2020-10-28 19:11:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:13,016 INFO L481 AbstractCegarLoop]: Abstraction has 47015 states and 70107 transitions. [2020-10-28 19:11:13,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:11:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 47015 states and 70107 transitions. [2020-10-28 19:11:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 19:11:13,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:13,077 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] [2020-10-28 19:11:13,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:11:13,077 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:13,078 INFO L82 PathProgramCache]: Analyzing trace with hash 984311116, now seen corresponding path program 1 times [2020-10-28 19:11:13,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:13,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966078801] [2020-10-28 19:11:13,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:13,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:13,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 19:11:13,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:11:13,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-28 19:11:13,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:13,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:11:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 19:11:13,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 19:11:13,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:14,225 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:14,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:14,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:14,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:14,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:14,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:11:14,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:14,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:14,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966078801] [2020-10-28 19:11:14,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:14,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:11:14,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867908272] [2020-10-28 19:11:14,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:11:14,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:14,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:11:14,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:14,278 INFO L87 Difference]: Start difference. First operand 47015 states and 70107 transitions. Second operand 5 states. [2020-10-28 19:11:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:18,943 INFO L93 Difference]: Finished difference Result 93820 states and 139873 transitions. [2020-10-28 19:11:18,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:11:18,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-28 19:11:18,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:18,995 INFO L225 Difference]: With dead ends: 93820 [2020-10-28 19:11:18,995 INFO L226 Difference]: Without dead ends: 46852 [2020-10-28 19:11:19,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:11:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46852 states. [2020-10-28 19:11:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46852 to 46852. [2020-10-28 19:11:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46852 states. [2020-10-28 19:11:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46852 states to 46852 states and 69813 transitions. [2020-10-28 19:11:21,387 INFO L78 Accepts]: Start accepts. Automaton has 46852 states and 69813 transitions. Word has length 138 [2020-10-28 19:11:21,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:21,388 INFO L481 AbstractCegarLoop]: Abstraction has 46852 states and 69813 transitions. [2020-10-28 19:11:21,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:11:21,388 INFO L276 IsEmpty]: Start isEmpty. Operand 46852 states and 69813 transitions. [2020-10-28 19:11:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:11:21,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:21,434 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] [2020-10-28 19:11:21,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:11:21,435 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:21,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:21,435 INFO L82 PathProgramCache]: Analyzing trace with hash -265077004, now seen corresponding path program 1 times [2020-10-28 19:11:21,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:21,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84395644] [2020-10-28 19:11:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:21,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:21,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:21,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:22,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:22,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:23,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:23,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:26,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:26,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:11:26,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 19:11:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:11:26,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:26,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 19:11:26,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 19:11:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:26,886 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:26,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:26,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:26,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:26,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:11:26,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:26,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:26,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84395644] [2020-10-28 19:11:26,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:26,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:11:26,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834369697] [2020-10-28 19:11:26,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:11:26,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:26,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:11:26,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:11:26,954 INFO L87 Difference]: Start difference. First operand 46852 states and 69813 transitions. Second operand 4 states. [2020-10-28 19:11:27,403 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:11:31,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:31,471 INFO L93 Difference]: Finished difference Result 62410 states and 93113 transitions. [2020-10-28 19:11:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:11:31,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-28 19:11:31,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:31,514 INFO L225 Difference]: With dead ends: 62410 [2020-10-28 19:11:31,514 INFO L226 Difference]: Without dead ends: 31564 [2020-10-28 19:11:31,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:31,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31564 states. [2020-10-28 19:11:33,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31564 to 31561. [2020-10-28 19:11:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31561 states. [2020-10-28 19:11:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31561 states to 31561 states and 47040 transitions. [2020-10-28 19:11:33,173 INFO L78 Accepts]: Start accepts. Automaton has 31561 states and 47040 transitions. Word has length 178 [2020-10-28 19:11:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:33,173 INFO L481 AbstractCegarLoop]: Abstraction has 31561 states and 47040 transitions. [2020-10-28 19:11:33,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:11:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 31561 states and 47040 transitions. [2020-10-28 19:11:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:11:33,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:33,194 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] [2020-10-28 19:11:33,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:11:33,194 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:33,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:33,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1382863454, now seen corresponding path program 1 times [2020-10-28 19:11:33,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:33,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625697926] [2020-10-28 19:11:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:35,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:36,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:36,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:37,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:37,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:38,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:38,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:11:38,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-28 19:11:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 19:11:38,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:38,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:11:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 19:11:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 19:11:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:38,660 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:38,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:38,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:38,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:11:38,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:38,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:38,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:38,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:38,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625697926] [2020-10-28 19:11:38,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:38,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:11:38,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183135523] [2020-10-28 19:11:38,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:11:38,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:38,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:11:38,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:11:38,712 INFO L87 Difference]: Start difference. First operand 31561 states and 47040 transitions. Second operand 4 states. [2020-10-28 19:11:39,152 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:11:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:11:42,214 INFO L93 Difference]: Finished difference Result 31567 states and 47044 transitions. [2020-10-28 19:11:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:11:42,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-28 19:11:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:11:42,233 INFO L225 Difference]: With dead ends: 31567 [2020-10-28 19:11:42,233 INFO L226 Difference]: Without dead ends: 16002 [2020-10-28 19:11:42,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:11:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16002 states. [2020-10-28 19:11:43,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16002 to 15999. [2020-10-28 19:11:43,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15999 states. [2020-10-28 19:11:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15999 states to 15999 states and 23828 transitions. [2020-10-28 19:11:43,024 INFO L78 Accepts]: Start accepts. Automaton has 15999 states and 23828 transitions. Word has length 178 [2020-10-28 19:11:43,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:11:43,024 INFO L481 AbstractCegarLoop]: Abstraction has 15999 states and 23828 transitions. [2020-10-28 19:11:43,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:11:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15999 states and 23828 transitions. [2020-10-28 19:11:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:11:43,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:11:43,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:11:43,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:11:43,035 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:11:43,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:11:43,035 INFO L82 PathProgramCache]: Analyzing trace with hash -270134910, now seen corresponding path program 1 times [2020-10-28 19:11:43,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:11:43,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144337023] [2020-10-28 19:11:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:11:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:46,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:48,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:48,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:11:48,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 47 [2020-10-28 19:11:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:11:48,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:48,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 19:11:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:11:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 19:11:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:48,642 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:11:48,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:11:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:11:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:11:48,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:11:48,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:11:48,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:11:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:11:48,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:11:48,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:11:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:11:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:11:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:11:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:11:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:11:48,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144337023] [2020-10-28 19:11:48,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:11:48,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 19:11:48,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193509598] [2020-10-28 19:11:48,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 19:11:48,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:11:48,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 19:11:48,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 19:11:48,785 INFO L87 Difference]: Start difference. First operand 15999 states and 23828 transitions. Second operand 9 states. [2020-10-28 19:11:58,177 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-28 19:11:58,633 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-28 19:11:59,099 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:11:59,561 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 19:12:00,003 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 19:12:00,522 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-28 19:12:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:01,748 INFO L93 Difference]: Finished difference Result 82597 states and 121152 transitions. [2020-10-28 19:12:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 19:12:01,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 178 [2020-10-28 19:12:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:01,824 INFO L225 Difference]: With dead ends: 82597 [2020-10-28 19:12:01,824 INFO L226 Difference]: Without dead ends: 70066 [2020-10-28 19:12:01,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-28 19:12:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70066 states. [2020-10-28 19:12:05,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70066 to 68179. [2020-10-28 19:12:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68179 states. [2020-10-28 19:12:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68179 states to 68179 states and 99690 transitions. [2020-10-28 19:12:06,130 INFO L78 Accepts]: Start accepts. Automaton has 68179 states and 99690 transitions. Word has length 178 [2020-10-28 19:12:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:06,130 INFO L481 AbstractCegarLoop]: Abstraction has 68179 states and 99690 transitions. [2020-10-28 19:12:06,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 19:12:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 68179 states and 99690 transitions. [2020-10-28 19:12:06,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:12:06,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:06,176 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] [2020-10-28 19:12:06,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:12:06,176 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:06,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:06,177 INFO L82 PathProgramCache]: Analyzing trace with hash -15423686, now seen corresponding path program 1 times [2020-10-28 19:12:06,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:06,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393572395] [2020-10-28 19:12:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:06,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:07,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:07,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:11,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:11,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:12:11,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-28 19:12:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:12:11,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:11,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 19:12:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 19:12:11,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:11,635 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:12:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:11,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:11,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:11,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:12:11,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:11,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:12:11,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393572395] [2020-10-28 19:12:11,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:11,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:12:11,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376343955] [2020-10-28 19:12:11,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:12:11,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:11,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:12:11,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:12:11,691 INFO L87 Difference]: Start difference. First operand 68179 states and 99690 transitions. Second operand 4 states. [2020-10-28 19:12:12,185 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:12:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:12:18,694 INFO L93 Difference]: Finished difference Result 119839 states and 175416 transitions. [2020-10-28 19:12:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:12:18,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-28 19:12:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:12:18,778 INFO L225 Difference]: With dead ends: 119839 [2020-10-28 19:12:18,778 INFO L226 Difference]: Without dead ends: 63886 [2020-10-28 19:12:18,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:12:18,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63886 states. [2020-10-28 19:12:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63886 to 63883. [2020-10-28 19:12:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63883 states. [2020-10-28 19:12:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63883 states to 63883 states and 93546 transitions. [2020-10-28 19:12:23,213 INFO L78 Accepts]: Start accepts. Automaton has 63883 states and 93546 transitions. Word has length 178 [2020-10-28 19:12:23,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:12:23,213 INFO L481 AbstractCegarLoop]: Abstraction has 63883 states and 93546 transitions. [2020-10-28 19:12:23,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:12:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 63883 states and 93546 transitions. [2020-10-28 19:12:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 19:12:23,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:12:23,255 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] [2020-10-28 19:12:23,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:12:23,255 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:12:23,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:12:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1405972364, now seen corresponding path program 1 times [2020-10-28 19:12:23,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:12:23,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414827038] [2020-10-28 19:12:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:12:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:23,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:24,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:24,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:28,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 19:12:28,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-28 19:12:28,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 19:12:28,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:28,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:12:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 19:12:28,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 19:12:28,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:28,733 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:12:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:12:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:12:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:12:28,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:12:28,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:12:28,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:12:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:12:28,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:12:28,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:12:28,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:12:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:12:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:12:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:12:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:12:28,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414827038] [2020-10-28 19:12:28,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:12:28,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:12:28,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42846995] [2020-10-28 19:12:28,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:12:28,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:12:28,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:12:28,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:12:28,781 INFO L87 Difference]: Start difference. First operand 63883 states and 93546 transitions. Second operand 4 states. [2020-10-28 19:12:29,249 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 215