/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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:15:36,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:15:36,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:15:36,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:15:36,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:15:36,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:15:36,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:15:36,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:15:36,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:15:36,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:15:36,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:15:36,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:15:36,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:15:36,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:15:36,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:15:36,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:15:36,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:15:36,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:15:36,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:15:36,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:15:36,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:15:36,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:15:36,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:15:36,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:15:36,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:15:36,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:15:36,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:15:36,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:15:36,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:15:36,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:15:36,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:15:36,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:15:36,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:15:36,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:15:36,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:15:36,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:15:36,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:15:36,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:15:36,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:15:36,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:15:36,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:15:36,397 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 19:15:36,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:15:36,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:15:36,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:15:36,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:15:36,451 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:15:36,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:15:36,451 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:15:36,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:15:36,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:15:36,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:15:36,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:15:36,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:15:36,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:15:36,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:15:36,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:15:36,454 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:15:36,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:15:36,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:15:36,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:15:36,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:15:36,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:15:36,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:15:36,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:15:36,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:15:36,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:15:36,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:15:36,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:15:36,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:15:36,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:15:36,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:15:36,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:15:36,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:15:36,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:15:36,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:15:36,963 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:15:36,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:15:37,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183620748/67a51402a4264992a313ef49112a35b2/FLAG7de4dffa4 [2020-10-28 19:15:37,780 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:15:37,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:15:37,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183620748/67a51402a4264992a313ef49112a35b2/FLAG7de4dffa4 [2020-10-28 19:15:38,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/183620748/67a51402a4264992a313ef49112a35b2 [2020-10-28 19:15:38,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:15:38,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:15:38,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:15:38,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:15:38,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:15:38,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:15:38" (1/1) ... [2020-10-28 19:15:38,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39080ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:38, skipping insertion in model container [2020-10-28 19:15:38,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:15:38" (1/1) ... [2020-10-28 19:15:38,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:15:38,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:15:38,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:15:38,658 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:15:38,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:15:39,002 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:15:39,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39 WrapperNode [2020-10-28 19:15:39,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:15:39,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:15:39,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:15:39,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:15:39,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (1/1) ... [2020-10-28 19:15:39,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (1/1) ... [2020-10-28 19:15:39,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (1/1) ... [2020-10-28 19:15:39,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (1/1) ... [2020-10-28 19:15:39,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (1/1) ... [2020-10-28 19:15:39,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (1/1) ... [2020-10-28 19:15:39,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (1/1) ... [2020-10-28 19:15:39,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:15:39,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:15:39,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:15:39,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:15:39,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (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 19:15:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:15:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:15:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:15:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:15:39,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:15:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:15:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:15:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:15:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:15:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:15:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 19:15:39,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:15:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:15:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:15:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:15:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:15:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:15:39,255 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:15:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:15:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:15:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:15:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:15:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:15:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:15:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:15:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:15:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:15:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:15:40,875 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:15:40,875 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:15:40,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:15:40 BoogieIcfgContainer [2020-10-28 19:15:40,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:15:40,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:15:40,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:15:40,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:15:40,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:15:38" (1/3) ... [2020-10-28 19:15:40,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e12a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:15:40, skipping insertion in model container [2020-10-28 19:15:40,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:15:39" (2/3) ... [2020-10-28 19:15:40,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e12a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:15:40, skipping insertion in model container [2020-10-28 19:15:40,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:15:40" (3/3) ... [2020-10-28 19:15:40,887 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 19:15:40,899 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:15:40,909 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:15:40,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:15:40,954 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:15:40,954 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:15:40,954 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:15:40,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:15:40,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:15:40,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:15:40,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:15:40,955 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:15:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states. [2020-10-28 19:15:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:15:40,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:40,999 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] [2020-10-28 19:15:41,000 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:41,007 INFO L82 PathProgramCache]: Analyzing trace with hash -388104051, now seen corresponding path program 1 times [2020-10-28 19:15:41,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:41,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848063296] [2020-10-28 19:15:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:41,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:41,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:43,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:44,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:45,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:46,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:46,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 19:15:46,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:15:46,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 19:15:46,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:46,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:15:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 19:15:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 19:15:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 19:15:47,034 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:15:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:47,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:47,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:47,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:47,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:47,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 19:15:47,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:47,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:15:47,178 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 19:15:47,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848063296] [2020-10-28 19:15:47,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:47,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:15:47,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827184075] [2020-10-28 19:15:47,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:15:47,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:47,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:15:47,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:15:47,215 INFO L87 Difference]: Start difference. First operand 340 states. Second operand 4 states. [2020-10-28 19:15:47,617 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:15:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:49,663 INFO L93 Difference]: Finished difference Result 653 states and 1127 transitions. [2020-10-28 19:15:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:49,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2020-10-28 19:15:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:49,690 INFO L225 Difference]: With dead ends: 653 [2020-10-28 19:15:49,690 INFO L226 Difference]: Without dead ends: 529 [2020-10-28 19:15:49,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-28 19:15:49,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 526. [2020-10-28 19:15:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-10-28 19:15:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 781 transitions. [2020-10-28 19:15:49,822 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 781 transitions. Word has length 157 [2020-10-28 19:15:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:49,829 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 781 transitions. [2020-10-28 19:15:49,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:15:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 781 transitions. [2020-10-28 19:15:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:15:49,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:49,839 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] [2020-10-28 19:15:49,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:15:49,841 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:49,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1450377450, now seen corresponding path program 1 times [2020-10-28 19:15:49,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:49,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903834898] [2020-10-28 19:15:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:51,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:54,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:54,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 19:15:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:15:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 19:15:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:54,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:15:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 19:15:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:15:55,510 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:15:55,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:55,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:55,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:55,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:55,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:15:55,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:55,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:55,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:55,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:55,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:55,662 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 19:15:55,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903834898] [2020-10-28 19:15:55,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:55,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:55,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000351579] [2020-10-28 19:15:55,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:55,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:55,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:55,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:55,667 INFO L87 Difference]: Start difference. First operand 526 states and 781 transitions. Second operand 5 states. [2020-10-28 19:15:58,213 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:15:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:59,452 INFO L93 Difference]: Finished difference Result 1443 states and 2146 transitions. [2020-10-28 19:15:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:15:59,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-28 19:15:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:59,461 INFO L225 Difference]: With dead ends: 1443 [2020-10-28 19:15:59,461 INFO L226 Difference]: Without dead ends: 1007 [2020-10-28 19:15:59,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:15:59,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-28 19:15:59,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 1004. [2020-10-28 19:15:59,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-10-28 19:15:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1476 transitions. [2020-10-28 19:15:59,555 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1476 transitions. Word has length 157 [2020-10-28 19:15:59,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:59,556 INFO L481 AbstractCegarLoop]: Abstraction has 1004 states and 1476 transitions. [2020-10-28 19:15:59,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1476 transitions. [2020-10-28 19:15:59,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:15:59,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:59,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:59,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:15:59,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:59,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1838709272, now seen corresponding path program 1 times [2020-10-28 19:15:59,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:59,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908269912] [2020-10-28 19:15:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:59,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:59,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:02,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:04,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:04,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 19:16:04,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:16:04,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 19:16:04,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:04,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:04,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 19:16:04,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:05,216 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:16:05,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:05,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:05,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:05,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:16:05,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:05,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:16:05,316 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 19:16:05,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908269912] [2020-10-28 19:16:05,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:05,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:05,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875353172] [2020-10-28 19:16:05,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:05,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:05,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:05,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:05,320 INFO L87 Difference]: Start difference. First operand 1004 states and 1476 transitions. Second operand 5 states. [2020-10-28 19:16:07,551 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:08,789 INFO L93 Difference]: Finished difference Result 2760 states and 4038 transitions. [2020-10-28 19:16:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:08,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 19:16:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:08,805 INFO L225 Difference]: With dead ends: 2760 [2020-10-28 19:16:08,806 INFO L226 Difference]: Without dead ends: 1784 [2020-10-28 19:16:08,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:08,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-10-28 19:16:08,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1781. [2020-10-28 19:16:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1781 states. [2020-10-28 19:16:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2587 transitions. [2020-10-28 19:16:08,953 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2587 transitions. Word has length 158 [2020-10-28 19:16:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:08,953 INFO L481 AbstractCegarLoop]: Abstraction has 1781 states and 2587 transitions. [2020-10-28 19:16:08,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2587 transitions. [2020-10-28 19:16:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 19:16:08,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:08,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:08,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:16:08,958 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:08,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:08,959 INFO L82 PathProgramCache]: Analyzing trace with hash -445274136, now seen corresponding path program 1 times [2020-10-28 19:16:08,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:08,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896836656] [2020-10-28 19:16:08,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 19:16:14,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:16:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:16:14,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:14,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:14,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 19:16:14,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:14,453 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:16:14,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:14,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:14,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:14,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:14,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:16:14,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:14,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:14,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:14,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:14,592 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 19:16:14,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896836656] [2020-10-28 19:16:14,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:14,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:14,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421688811] [2020-10-28 19:16:14,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:14,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:14,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:14,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:14,596 INFO L87 Difference]: Start difference. First operand 1781 states and 2587 transitions. Second operand 5 states. [2020-10-28 19:16:16,854 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:18,073 INFO L93 Difference]: Finished difference Result 5122 states and 7392 transitions. [2020-10-28 19:16:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:18,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 19:16:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:18,096 INFO L225 Difference]: With dead ends: 5122 [2020-10-28 19:16:18,096 INFO L226 Difference]: Without dead ends: 3408 [2020-10-28 19:16:18,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2020-10-28 19:16:18,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3405. [2020-10-28 19:16:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3405 states. [2020-10-28 19:16:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 4871 transitions. [2020-10-28 19:16:18,372 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 4871 transitions. Word has length 159 [2020-10-28 19:16:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:18,373 INFO L481 AbstractCegarLoop]: Abstraction has 3405 states and 4871 transitions. [2020-10-28 19:16:18,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 4871 transitions. [2020-10-28 19:16:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:16:18,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:18,382 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] [2020-10-28 19:16:18,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:16:18,382 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:18,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:18,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1887419688, now seen corresponding path program 1 times [2020-10-28 19:16:18,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:18,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786731944] [2020-10-28 19:16:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:18,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:21,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:21,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:23,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:23,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 19:16:23,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:16:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:16:23,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:23,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:23,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:23,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 19:16:23,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:23,916 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:16:23,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:23,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:23,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:23,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:23,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:16:23,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:23,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:23,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:23,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:23,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:24,033 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 19:16:24,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786731944] [2020-10-28 19:16:24,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:24,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:24,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899636307] [2020-10-28 19:16:24,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:24,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:24,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:24,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:24,035 INFO L87 Difference]: Start difference. First operand 3405 states and 4871 transitions. Second operand 5 states. [2020-10-28 19:16:26,491 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:27,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:27,947 INFO L93 Difference]: Finished difference Result 9296 states and 13310 transitions. [2020-10-28 19:16:27,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:27,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 19:16:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:27,981 INFO L225 Difference]: With dead ends: 9296 [2020-10-28 19:16:27,982 INFO L226 Difference]: Without dead ends: 6523 [2020-10-28 19:16:27,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:27,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2020-10-28 19:16:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6520. [2020-10-28 19:16:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6520 states. [2020-10-28 19:16:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 9192 transitions. [2020-10-28 19:16:28,545 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 9192 transitions. Word has length 160 [2020-10-28 19:16:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:28,546 INFO L481 AbstractCegarLoop]: Abstraction has 6520 states and 9192 transitions. [2020-10-28 19:16:28,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 9192 transitions. [2020-10-28 19:16:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 19:16:28,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:28,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:28,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:16:28,558 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:28,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2044348391, now seen corresponding path program 1 times [2020-10-28 19:16:28,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:28,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639338773] [2020-10-28 19:16:28,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:28,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:28,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:28,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:29,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:30,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:32,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:33,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 19:16:33,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:16:33,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:16:33,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:33,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:16:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:34,102 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:16:34,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:34,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:34,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:34,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:16:34,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:34,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:34,192 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 19:16:34,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639338773] [2020-10-28 19:16:34,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:34,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:34,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927627228] [2020-10-28 19:16:34,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:34,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:34,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:34,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:34,194 INFO L87 Difference]: Start difference. First operand 6520 states and 9192 transitions. Second operand 5 states. [2020-10-28 19:16:36,948 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:38,492 INFO L93 Difference]: Finished difference Result 18402 states and 25905 transitions. [2020-10-28 19:16:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:38,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-28 19:16:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:38,552 INFO L225 Difference]: With dead ends: 18402 [2020-10-28 19:16:38,553 INFO L226 Difference]: Without dead ends: 12548 [2020-10-28 19:16:38,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12548 states. [2020-10-28 19:16:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12548 to 12545. [2020-10-28 19:16:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12545 states. [2020-10-28 19:16:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 17416 transitions. [2020-10-28 19:16:39,734 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 17416 transitions. Word has length 161 [2020-10-28 19:16:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:39,734 INFO L481 AbstractCegarLoop]: Abstraction has 12545 states and 17416 transitions. [2020-10-28 19:16:39,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 17416 transitions. [2020-10-28 19:16:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 19:16:39,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:39,755 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] [2020-10-28 19:16:39,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:16:39,755 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:39,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1569913576, now seen corresponding path program 1 times [2020-10-28 19:16:39,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:39,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763480671] [2020-10-28 19:16:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:44,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:44,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 19:16:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:16:44,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:16:44,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:44,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 19:16:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:45,252 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:16:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:45,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:45,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:16:45,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:45,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:45,313 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 19:16:45,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763480671] [2020-10-28 19:16:45,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:45,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:45,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002134167] [2020-10-28 19:16:45,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:45,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:45,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:45,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:45,315 INFO L87 Difference]: Start difference. First operand 12545 states and 17416 transitions. Second operand 5 states. [2020-10-28 19:16:48,734 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:50,672 INFO L93 Difference]: Finished difference Result 35809 states and 49760 transitions. [2020-10-28 19:16:50,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:50,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 19:16:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:50,726 INFO L225 Difference]: With dead ends: 35809 [2020-10-28 19:16:50,727 INFO L226 Difference]: Without dead ends: 24470 [2020-10-28 19:16:50,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24470 states. [2020-10-28 19:16:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24470 to 24467. [2020-10-28 19:16:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24467 states. [2020-10-28 19:16:52,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24467 states to 24467 states and 33540 transitions. [2020-10-28 19:16:52,692 INFO L78 Accepts]: Start accepts. Automaton has 24467 states and 33540 transitions. Word has length 162 [2020-10-28 19:16:52,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:52,692 INFO L481 AbstractCegarLoop]: Abstraction has 24467 states and 33540 transitions. [2020-10-28 19:16:52,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 24467 states and 33540 transitions. [2020-10-28 19:16:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 19:16:52,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:52,733 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] [2020-10-28 19:16:52,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:16:52,733 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:52,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:52,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1787804057, now seen corresponding path program 1 times [2020-10-28 19:16:52,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:52,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122164824] [2020-10-28 19:16:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:52,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:52,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:53,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:53,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:57,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:57,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 19:16:57,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:16:57,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:16:57,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:57,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:16:57,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 19:16:57,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:16:58,235 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:16:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:58,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:58,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:58,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:16:58,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:58,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:58,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:58,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:58,289 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 19:16:58,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122164824] [2020-10-28 19:16:58,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:58,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:58,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889440452] [2020-10-28 19:16:58,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:58,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:58,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:58,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:58,292 INFO L87 Difference]: Start difference. First operand 24467 states and 33540 transitions. Second operand 5 states. [2020-10-28 19:17:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:01,102 INFO L93 Difference]: Finished difference Result 40385 states and 55336 transitions. [2020-10-28 19:17:01,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:01,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 19:17:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:01,138 INFO L225 Difference]: With dead ends: 40385 [2020-10-28 19:17:01,139 INFO L226 Difference]: Without dead ends: 16022 [2020-10-28 19:17:01,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:01,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16022 states. [2020-10-28 19:17:02,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16022 to 16022. [2020-10-28 19:17:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16022 states. [2020-10-28 19:17:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16022 states to 16022 states and 21944 transitions. [2020-10-28 19:17:02,552 INFO L78 Accepts]: Start accepts. Automaton has 16022 states and 21944 transitions. Word has length 163 [2020-10-28 19:17:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:02,552 INFO L481 AbstractCegarLoop]: Abstraction has 16022 states and 21944 transitions. [2020-10-28 19:17:02,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 16022 states and 21944 transitions. [2020-10-28 19:17:02,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 19:17:02,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:02,574 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] [2020-10-28 19:17:02,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:17:02,575 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1005912660, now seen corresponding path program 1 times [2020-10-28 19:17:02,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:02,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292071051] [2020-10-28 19:17:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:02,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:02,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:07,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:07,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 19:17:07,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:17:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:17:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:07,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 19:17:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:08,073 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:08,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:08,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:08,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:08,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:17:08,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:08,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:08,157 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 19:17:08,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292071051] [2020-10-28 19:17:08,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:08,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:08,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93946052] [2020-10-28 19:17:08,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:08,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:08,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:08,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:08,159 INFO L87 Difference]: Start difference. First operand 16022 states and 21944 transitions. Second operand 5 states. [2020-10-28 19:17:08,573 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:17:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:12,872 INFO L93 Difference]: Finished difference Result 28494 states and 38968 transitions. [2020-10-28 19:17:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:12,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-28 19:17:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:12,904 INFO L225 Difference]: With dead ends: 28494 [2020-10-28 19:17:12,905 INFO L226 Difference]: Without dead ends: 15977 [2020-10-28 19:17:12,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15977 states. [2020-10-28 19:17:14,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15977 to 15974. [2020-10-28 19:17:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15974 states. [2020-10-28 19:17:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15974 states to 15974 states and 21808 transitions. [2020-10-28 19:17:14,224 INFO L78 Accepts]: Start accepts. Automaton has 15974 states and 21808 transitions. Word has length 165 [2020-10-28 19:17:14,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:14,224 INFO L481 AbstractCegarLoop]: Abstraction has 15974 states and 21808 transitions. [2020-10-28 19:17:14,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:14,224 INFO L276 IsEmpty]: Start isEmpty. Operand 15974 states and 21808 transitions. [2020-10-28 19:17:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 19:17:14,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:14,245 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] [2020-10-28 19:17:14,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:17:14,245 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1727928029, now seen corresponding path program 1 times [2020-10-28 19:17:14,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:14,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017297554] [2020-10-28 19:17:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:14,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:19,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:17:19,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:19,732 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:19,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:19,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:19,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:17:19,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:19,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:19,796 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 19:17:19,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017297554] [2020-10-28 19:17:19,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:19,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:19,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966082064] [2020-10-28 19:17:19,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:19,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:19,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:19,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:19,799 INFO L87 Difference]: Start difference. First operand 15974 states and 21808 transitions. Second operand 5 states. [2020-10-28 19:17:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:22,433 INFO L93 Difference]: Finished difference Result 29567 states and 40499 transitions. [2020-10-28 19:17:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:22,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-28 19:17:22,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:22,465 INFO L225 Difference]: With dead ends: 29567 [2020-10-28 19:17:22,465 INFO L226 Difference]: Without dead ends: 13993 [2020-10-28 19:17:22,484 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 19:17:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13993 states. [2020-10-28 19:17:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13993 to 13993. [2020-10-28 19:17:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13993 states. [2020-10-28 19:17:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13993 states to 13993 states and 19149 transitions. [2020-10-28 19:17:23,572 INFO L78 Accepts]: Start accepts. Automaton has 13993 states and 19149 transitions. Word has length 166 [2020-10-28 19:17:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:23,572 INFO L481 AbstractCegarLoop]: Abstraction has 13993 states and 19149 transitions. [2020-10-28 19:17:23,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 13993 states and 19149 transitions. [2020-10-28 19:17:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 19:17:23,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:23,586 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] [2020-10-28 19:17:23,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:17:23,586 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:23,587 INFO L82 PathProgramCache]: Analyzing trace with hash 416881678, now seen corresponding path program 1 times [2020-10-28 19:17:23,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:23,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123120166] [2020-10-28 19:17:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 19:17:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 19:17:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:28,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:28,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 19:17:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 19:17:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:29,075 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:29,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:29,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:29,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:29,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:17:29,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:29,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:29,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:29,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:29,138 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 19:17:29,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123120166] [2020-10-28 19:17:29,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:29,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:29,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389324527] [2020-10-28 19:17:29,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:29,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:29,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:29,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:29,140 INFO L87 Difference]: Start difference. First operand 13993 states and 19149 transitions. Second operand 5 states. [2020-10-28 19:17:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:31,619 INFO L93 Difference]: Finished difference Result 23390 states and 31989 transitions. [2020-10-28 19:17:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:31,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 19:17:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:31,632 INFO L225 Difference]: With dead ends: 23390 [2020-10-28 19:17:31,632 INFO L226 Difference]: Without dead ends: 9477 [2020-10-28 19:17:31,645 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 19:17:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9477 states. [2020-10-28 19:17:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9477 to 9477. [2020-10-28 19:17:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9477 states. [2020-10-28 19:17:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9477 states to 9477 states and 12951 transitions. [2020-10-28 19:17:32,394 INFO L78 Accepts]: Start accepts. Automaton has 9477 states and 12951 transitions. Word has length 167 [2020-10-28 19:17:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:32,394 INFO L481 AbstractCegarLoop]: Abstraction has 9477 states and 12951 transitions. [2020-10-28 19:17:32,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9477 states and 12951 transitions. [2020-10-28 19:17:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 19:17:32,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:32,404 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] [2020-10-28 19:17:32,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:17:32,404 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:32,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:32,404 INFO L82 PathProgramCache]: Analyzing trace with hash 969356982, now seen corresponding path program 1 times [2020-10-28 19:17:32,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:32,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374724602] [2020-10-28 19:17:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:37,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:37,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 19:17:37,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:17:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 19:17:37,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:37,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 19:17:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:37,899 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:37,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:37,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:37,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:37,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:37,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:37,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:17:37,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:37,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:37,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:37,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:37,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:37,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:37,968 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 19:17:37,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374724602] [2020-10-28 19:17:37,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:37,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:37,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405263171] [2020-10-28 19:17:37,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:37,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:37,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:37,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:37,970 INFO L87 Difference]: Start difference. First operand 9477 states and 12951 transitions. Second operand 5 states. [2020-10-28 19:17:38,418 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:17:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:42,244 INFO L93 Difference]: Finished difference Result 16736 states and 22852 transitions. [2020-10-28 19:17:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:17:42,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-28 19:17:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:42,256 INFO L225 Difference]: With dead ends: 16736 [2020-10-28 19:17:42,256 INFO L226 Difference]: Without dead ends: 9461 [2020-10-28 19:17:42,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2020-10-28 19:17:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9458. [2020-10-28 19:17:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9458 states. [2020-10-28 19:17:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9458 states to 9458 states and 12867 transitions. [2020-10-28 19:17:42,989 INFO L78 Accepts]: Start accepts. Automaton has 9458 states and 12867 transitions. Word has length 170 [2020-10-28 19:17:42,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:42,989 INFO L481 AbstractCegarLoop]: Abstraction has 9458 states and 12867 transitions. [2020-10-28 19:17:42,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:42,989 INFO L276 IsEmpty]: Start isEmpty. Operand 9458 states and 12867 transitions. [2020-10-28 19:17:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 19:17:42,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:42,996 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] [2020-10-28 19:17:42,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:17:42,996 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash 963646050, now seen corresponding path program 1 times [2020-10-28 19:17:42,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:42,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186004617] [2020-10-28 19:17:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:48,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:48,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 19:17:48,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 19:17:48,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:48,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:48,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 19:17:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 19:17:48,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:48,468 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:48,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:48,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:48,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:17:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:48,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:48,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:48,520 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 19:17:48,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186004617] [2020-10-28 19:17:48,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:48,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:48,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178043356] [2020-10-28 19:17:48,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:48,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:48,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:48,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:48,523 INFO L87 Difference]: Start difference. First operand 9458 states and 12867 transitions. Second operand 5 states. [2020-10-28 19:17:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:50,803 INFO L93 Difference]: Finished difference Result 15592 states and 21247 transitions. [2020-10-28 19:17:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:50,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 19:17:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:50,814 INFO L225 Difference]: With dead ends: 15592 [2020-10-28 19:17:50,814 INFO L226 Difference]: Without dead ends: 8190 [2020-10-28 19:17:50,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:17:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8190 states. [2020-10-28 19:17:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8190 to 8190. [2020-10-28 19:17:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8190 states. [2020-10-28 19:17:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8190 states to 8190 states and 11119 transitions. [2020-10-28 19:17:51,393 INFO L78 Accepts]: Start accepts. Automaton has 8190 states and 11119 transitions. Word has length 171 [2020-10-28 19:17:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:51,394 INFO L481 AbstractCegarLoop]: Abstraction has 8190 states and 11119 transitions. [2020-10-28 19:17:51,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8190 states and 11119 transitions. [2020-10-28 19:17:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 19:17:51,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:51,399 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] [2020-10-28 19:17:51,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:17:51,399 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1924963677, now seen corresponding path program 1 times [2020-10-28 19:17:51,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:51,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953705160] [2020-10-28 19:17:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 19:17:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:56,848 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:17:56,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:56,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:56,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:56,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:17:56,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:56,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:56,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:56,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:56,914 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 19:17:56,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953705160] [2020-10-28 19:17:56,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:56,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:17:56,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483728224] [2020-10-28 19:17:56,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:17:56,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:56,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:17:56,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:17:56,917 INFO L87 Difference]: Start difference. First operand 8190 states and 11119 transitions. Second operand 4 states. [2020-10-28 19:17:59,986 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:18:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:00,650 INFO L93 Difference]: Finished difference Result 19166 states and 26601 transitions. [2020-10-28 19:18:00,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:00,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-28 19:18:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:00,664 INFO L225 Difference]: With dead ends: 19166 [2020-10-28 19:18:00,664 INFO L226 Difference]: Without dead ends: 12251 [2020-10-28 19:18:00,674 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 19:18:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12251 states. [2020-10-28 19:18:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12251 to 10672. [2020-10-28 19:18:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10672 states. [2020-10-28 19:18:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10672 states to 10672 states and 14961 transitions. [2020-10-28 19:18:01,581 INFO L78 Accepts]: Start accepts. Automaton has 10672 states and 14961 transitions. Word has length 173 [2020-10-28 19:18:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:01,582 INFO L481 AbstractCegarLoop]: Abstraction has 10672 states and 14961 transitions. [2020-10-28 19:18:01,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:18:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 10672 states and 14961 transitions. [2020-10-28 19:18:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 19:18:01,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:01,589 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] [2020-10-28 19:18:01,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:18:01,589 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:01,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:01,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1339938698, now seen corresponding path program 1 times [2020-10-28 19:18:01,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:01,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763950317] [2020-10-28 19:18:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:01,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:06,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:06,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 19:18:06,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:18:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:18:06,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:06,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 19:18:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:07,102 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:07,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:07,162 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 19:18:07,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763950317] [2020-10-28 19:18:07,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:07,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:07,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698462462] [2020-10-28 19:18:07,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:07,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:07,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:07,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:07,164 INFO L87 Difference]: Start difference. First operand 10672 states and 14961 transitions. Second operand 5 states. [2020-10-28 19:18:07,596 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 19:18:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:11,014 INFO L93 Difference]: Finished difference Result 17364 states and 24448 transitions. [2020-10-28 19:18:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:11,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-28 19:18:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:11,026 INFO L225 Difference]: With dead ends: 17364 [2020-10-28 19:18:11,027 INFO L226 Difference]: Without dead ends: 10675 [2020-10-28 19:18:11,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10675 states. [2020-10-28 19:18:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10675 to 10672. [2020-10-28 19:18:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10672 states. [2020-10-28 19:18:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10672 states to 10672 states and 14886 transitions. [2020-10-28 19:18:11,913 INFO L78 Accepts]: Start accepts. Automaton has 10672 states and 14886 transitions. Word has length 176 [2020-10-28 19:18:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:11,914 INFO L481 AbstractCegarLoop]: Abstraction has 10672 states and 14886 transitions. [2020-10-28 19:18:11,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 10672 states and 14886 transitions. [2020-10-28 19:18:11,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-28 19:18:11,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:11,919 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] [2020-10-28 19:18:11,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:18:11,919 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:11,919 INFO L82 PathProgramCache]: Analyzing trace with hash -537834841, now seen corresponding path program 1 times [2020-10-28 19:18:11,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:11,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22089377] [2020-10-28 19:18:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:11,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:13,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:16,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:16,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 19:18:16,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:16,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 19:18:16,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:16,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 19:18:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 19:18:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:17,379 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:17,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:17,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:17,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:17,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22089377] [2020-10-28 19:18:17,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:17,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:17,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148360144] [2020-10-28 19:18:17,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:17,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:17,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:17,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:17,443 INFO L87 Difference]: Start difference. First operand 10672 states and 14886 transitions. Second operand 5 states. [2020-10-28 19:18:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:21,435 INFO L93 Difference]: Finished difference Result 23283 states and 34182 transitions. [2020-10-28 19:18:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:21,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-28 19:18:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:21,459 INFO L225 Difference]: With dead ends: 23283 [2020-10-28 19:18:21,460 INFO L226 Difference]: Without dead ends: 16623 [2020-10-28 19:18:21,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16623 states. [2020-10-28 19:18:22,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16623 to 10651. [2020-10-28 19:18:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10651 states. [2020-10-28 19:18:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10651 states to 10651 states and 14834 transitions. [2020-10-28 19:18:22,514 INFO L78 Accepts]: Start accepts. Automaton has 10651 states and 14834 transitions. Word has length 177 [2020-10-28 19:18:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:22,515 INFO L481 AbstractCegarLoop]: Abstraction has 10651 states and 14834 transitions. [2020-10-28 19:18:22,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10651 states and 14834 transitions. [2020-10-28 19:18:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-28 19:18:22,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:22,520 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] [2020-10-28 19:18:22,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:18:22,520 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1387802148, now seen corresponding path program 1 times [2020-10-28 19:18:22,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:22,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167633971] [2020-10-28 19:18:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:22,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:22,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:24,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:27,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:27,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 19:18:27,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:18:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:18:27,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:27,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:27,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 19:18:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 19:18:27,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:27,958 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:27,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:27,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:27,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:27,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:27,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:18:27,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:27,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:28,008 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 19:18:28,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167633971] [2020-10-28 19:18:28,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:28,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:28,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160671028] [2020-10-28 19:18:28,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:28,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:28,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:28,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:28,010 INFO L87 Difference]: Start difference. First operand 10651 states and 14834 transitions. Second operand 5 states. [2020-10-28 19:18:28,418 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 19:18:30,653 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 19:18:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:32,453 INFO L93 Difference]: Finished difference Result 25786 states and 37198 transitions. [2020-10-28 19:18:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:18:32,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-28 19:18:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:32,485 INFO L225 Difference]: With dead ends: 25786 [2020-10-28 19:18:32,485 INFO L226 Difference]: Without dead ends: 19547 [2020-10-28 19:18:32,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:32,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19547 states. [2020-10-28 19:18:34,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19547 to 19544. [2020-10-28 19:18:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19544 states. [2020-10-28 19:18:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19544 states to 19544 states and 27514 transitions. [2020-10-28 19:18:34,516 INFO L78 Accepts]: Start accepts. Automaton has 19544 states and 27514 transitions. Word has length 177 [2020-10-28 19:18:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:34,516 INFO L481 AbstractCegarLoop]: Abstraction has 19544 states and 27514 transitions. [2020-10-28 19:18:34,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 19544 states and 27514 transitions. [2020-10-28 19:18:34,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-28 19:18:34,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:34,525 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] [2020-10-28 19:18:34,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:18:34,525 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:34,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:34,526 INFO L82 PathProgramCache]: Analyzing trace with hash -975338997, now seen corresponding path program 1 times [2020-10-28 19:18:34,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:34,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20859781] [2020-10-28 19:18:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:36,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:37,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:37,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:37,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:39,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:39,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 19:18:39,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:18:39,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:18:39,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:39,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:18:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 19:18:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 19:18:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:39,982 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:39,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:39,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:39,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:39,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:39,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:18:39,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:39,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:39,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:39,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:40,022 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 19:18:40,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20859781] [2020-10-28 19:18:40,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:40,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:18:40,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145737138] [2020-10-28 19:18:40,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:18:40,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:40,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:18:40,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:18:40,024 INFO L87 Difference]: Start difference. First operand 19544 states and 27514 transitions. Second operand 4 states. [2020-10-28 19:18:44,444 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:18:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:46,036 INFO L93 Difference]: Finished difference Result 50642 states and 72420 transitions. [2020-10-28 19:18:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:46,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-28 19:18:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:46,096 INFO L225 Difference]: With dead ends: 50642 [2020-10-28 19:18:46,096 INFO L226 Difference]: Without dead ends: 32153 [2020-10-28 19:18:46,124 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 19:18:46,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32153 states. [2020-10-28 19:18:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32153 to 28292. [2020-10-28 19:18:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28292 states. [2020-10-28 19:18:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28292 states to 28292 states and 41012 transitions. [2020-10-28 19:18:49,681 INFO L78 Accepts]: Start accepts. Automaton has 28292 states and 41012 transitions. Word has length 177 [2020-10-28 19:18:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:49,681 INFO L481 AbstractCegarLoop]: Abstraction has 28292 states and 41012 transitions. [2020-10-28 19:18:49,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:18:49,681 INFO L276 IsEmpty]: Start isEmpty. Operand 28292 states and 41012 transitions. [2020-10-28 19:18:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 19:18:49,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:49,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:49,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 19:18:49,692 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:49,693 INFO L82 PathProgramCache]: Analyzing trace with hash 405853079, now seen corresponding path program 1 times [2020-10-28 19:18:49,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:49,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908488142] [2020-10-28 19:18:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:54,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:54,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 19:18:54,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:18:54,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:54,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:18:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 19:18:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 19:18:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:18:55,146 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 19:18:55,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:55,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:55,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:55,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:55,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:18:55,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:55,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:55,282 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 19:18:55,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908488142] [2020-10-28 19:18:55,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:55,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:18:55,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604080604] [2020-10-28 19:18:55,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:18:55,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:55,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:18:55,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:18:55,287 INFO L87 Difference]: Start difference. First operand 28292 states and 41012 transitions. Second operand 4 states. [2020-10-28 19:18:59,715 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 19:19:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:02,800 INFO L93 Difference]: Finished difference Result 72744 states and 107443 transitions. [2020-10-28 19:19:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:02,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2020-10-28 19:19:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:02,858 INFO L225 Difference]: With dead ends: 72744 [2020-10-28 19:19:02,858 INFO L226 Difference]: Without dead ends: 45287 [2020-10-28 19:19:02,882 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 19:19:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45287 states.